Innova Series

Operator’s Manual
 PROPRIETARY STATEMENT
Thermo GasTech owns proprietary rights in the information disclosed within. By receiving this
document, the recipient agrees that neither this document nor the information disclosed within
nor any part shall be reproduced or transferred to other documents or used or disclosed to others
for manufacturing or for any other purpose except as specifically authorized in writing by
Thermo GasTech.

COPYRIGHT STATEMENT
Information contained in this document is protected by copyright. No part of this document may
be photocopied, reproduced, or translated to another program or system without prior written
authorization from Thermo GasTech., © 2001, Thermo GasTech.

TRADEMARK STATEMENT
Protected through use and/or registration in the United States and many foreign countries are the
trademarks and service marks of Thermo GasTech. The use of the ® symbol indicates
registration in the United States only; registrations may not have been issued at present in other
countries. All other product names and logos are trademarks of their respective owners.

GASTECH® is a trademark of Thermo GasTech and is registered with the U.S. Patent and
Trademark Office.

DISCLAIMER
Under no circumstances will Thermo GasTech be liable for any claims, losses, or damages
resulting from or arising out of the repair or modification of the equipment by a party other than
Thermo GasTech or its authorized service representatives, or by operation or use of the
equipment other than in accordance with the printed instructions provided by Thermo GasTech
or if the equipment has been improperly maintained or subject to neglect or accident. Any of the
foregoing will void the warranty.

EXPORT STATEMENT
Export of the information and products in this manual from the U.S.A., or re-export from
another country, may require written authorization from the U.S. Department of Commerce.
Printed in the U.S.A.

REVISIONS TO MANUAL
All information contained in this manual is believed to be true and correct at the time of
printing. However, as part of its continuing efforts to improve its products and their
documentation, Thermo GasTech reserves the right to make changes at any time without
notice. Any revised copies of this manual can be obtained by writing Thermo GasTech.

ii 71-6417 - REV A
 WARNING
THIS INSTRUMENT IS DESIGNED TO DETECT ONE OR MORE OF
THE FOLLOWING:

FLAMMABLE VAPORS, OXYGEN CONTENT, AND/OR TOXIC GAS AND TO

GIVE WARNING BEFORE THEY REACH HARMFUL CONDITIONS. IN ORDER
TO ENSURE THAT IT WILL WARN OF DANGEROUS CONCENTRATIONS, IT
IS ESSENTIAL THAT THE INSTRUCTIONS IN THIS MANUAL, PARTICULARLY
THOSE CONCERNING START UP , OPERATION , CALIBRATION , AND
MAINTENANCE, BE READ, UNDERSTOOD, AND FOLLOWED.

NOTATION CONVENTIONS
Notices are used in this operator’s manual to alert you to hazardous condi-
tions to person or instrument and to notify you of additional information.
This operator’s manual uses the following notices.

WARNING
Notifies you of potential danger that can result in personal injury
or death.

CAUTION
Notifies you of potential damage to equipment.

NOTE
Notifies you of additional or critical information.

71-6417 - REV A iii

 SERVICE POLICY

Gastech Australia Pty Ltd maintains an instrument service facility at the

factory. Some Gastech distributors also have repair facilities; however,
Gastech assumes no liability for service performed by other than Gastech
Australia personnel. Repairs are warranted for 90 days from date of
shipment; sensors have individual warranty. Should your instrument require
non-warranty repair, you may contact the distributor from whom it was
purchased, or you may contact Gastech Australia directly.

If Gastech Australia is to do the repair work for you, you may send the
instrument, prepaid, to Gastech Australia Pty Ltd, Unit 106 Westpoint
Centre, 396 Scarborough Beach Road, Osborne Park, WA, 6017. Att:
Service Department. Always include your address, purchase order number,
shipping and billing information, and a description of the defect as you
perceive it. If you wish to set a limit to the authorized repair cost, state a
“not to exceed” figure. Gastech Australia’s policy is to perform all needed
repairs to restore the instrument to full operating condition, including
reactivation of all out-of-warranty electrochemical cells.

To expedite the repair operation, it is required to describe the nature of the

problem, and provide a purchase order number.

If this is the first time you are dealing directly with the factory, you will be
asked to provide credit references, prepay, or authorize COD shipment.

Pack the instrument and all its accessories (preferably in its original
packing). Enclose your purchase order number, shipping and billing
information, and any special instructions.

01/99

iv 71-0084 – REV A
 WARRANTY STATEMENT
Thermo GasTech (the “Company”) warrants that the Products will operate
substantially in conformance with the Company’s published specifications,
when subjected to normal, proper, and intended usage by properly trained
personnel, for a period of one (1) year after shipment to Customer (the
“Warranty Period”). The Company agrees during the Warranty Period,
provided it is promptly notified in writing upon the discovery of any defect and
further provided that all costs of returning the defective Products to the
Company are prepaid by Customer, to repair or replace, at the Company’s
option, defective products so as to cause the same to operate in substantial
conformance with said specifications. Replacement parts may be new or
refurbished, at the election of the Company. All replaced parts shall become
the property of the Company.
Lamps, pump diaphragms/valves, batteries, fuses, bulbs, and other expendable
items are expressly excluded from the warranty.
The Company’s sole liability with respect to equipment, materials, parts, or
software furnished to the Company by third party suppliers shall be limited to
the assignment by the Company to Customer of any such third-party supplier’s
warranty, to the extent the same is assignable. In no event shall the Company
have any obligation to make repairs, replacements, or corrections required, in
whole or in part, as the result of (i) normal wear and tear, (ii) accident, disaster,
or event of force majeure, (iii) misuse, fault, or negligence of or by Customer,
(iv) use of the Products in a manner for which they were not designed, (v)
causes external to the Products such as, but not limited to, power failure or
electrical power surges, or (vi) use of the Products in combination with
equipment or software not supplied by the Company.
ANY INSTALLATION, MAINTENANCE, REPAIR, SERVICE,
RELOCATION, OR ALTERATION TO OR OF, OR OTHER TAMPERING
WITH, THE PRODUCTS PERFORMED BY ANY PERSON OR ENTITY
OTHER THAN THE COMPANY WITHOUT THE COMPANY’S PRIOR
WRITTEN APPROVAL, OR ANY USE OF REPLACEMENT PARTS NOT
SUPPLIED BY THE COMPANY, SHALL IMMEDIATELY VOID AND
CANCEL ALL WARRANTIES WITH RESPECT TO THE AFFECTED
PRODUCTS.
THE OBLIGATION TO REPAIR OR REPLACE A DEFECTIVE
PRODUCT SHALL BE THE SOLE REMEDY OF CUSTOMER IN THE
EVENT OF A DEFECTIVE PRODUCT. EXCEPT AS EXPRESSLY
PROVIDED IN THIS SECTION, THE COMPANY DISCLAIMS ALL
WARRANTIES, WHETHER EXPRESS OR IMPLIED, ORAL OR
WRITTEN, WITH RESPECT TO THE PRODUCTS, INCLUDING
WITHOUT LIMITATION ALL IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE.
THE COMPANY DOES NOT WARRANT THAT THE PRODUCTS ARE
ERROR-FREE OR WILL ACCOMPLISH ANY PARTICULAR RESULT.

71-6417 - REV A v
vi 71-6417 - REV A
 TABLE OF CONTENTS
Chapter 1
Introduction
About the Innova Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Sensor Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Chapter 2
Start Up & Operation
Preparing for Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Starting Up the Innova . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Turninging Off the Innova . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Performing a Bump Test on Power-Up . . . . . . . . . . . . . . . . . . . . . . . . . 9
Chapter 3
Alarms
Gas Alarms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Battery Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Sensor Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Pump Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Datalog Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Temperature Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Chapter 4
User Program
About the User Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Display Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Accessing Password-Protected Menus. . . . . . . . . . . . . . . . . . . . . . . . . 19
Advanced Features Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Datalog Features Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

71-6417 - REV A vii

Innova Series Operator’s Manual

Chapter 5
Calibration
Preparing the Calibration Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Calibrating the Innova . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Calibration Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Chapter 6
Maintenance
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Recharging Ni-Cd Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Replacing Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Appendix A
Parts List and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Appendix B
Interference Factors
High Concentration of Combustible Gas . . . . . . . . . . . . . . . . . . . . . . . 57
Relative Combustible Response Table . . . . . . . . . . . . . . . . . . . . . . . . 59
Appendix C
Supplemental Instructions
Innova Land Surveyor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Innova Transformer Gas Tester . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

viii 71-6417 - REV A

 Chapter
1

INTRODUCTION
About the Innova Series
The Innova Series (shown in Figure 1-1) is a line of portable gas monitors
capable of detecting from one to four gases. It continuously computes average
readings for Short Term Exposure Limit (STEL) and Time Weighted Average
(TWA) levels. You can display Peak readings, STEL, and TWA levels on
command. The Alarm circuit alerts you to dangerous gas conditions, low
battery conditions, sensor failure, datalog full, calibration reminder, and
sample-draw pump failures.

Figure 1-1 Innova Series Gas Monitor

The Innova is powered by four “D” size alkaline or nickel-cadmium (NiCd)
batteries. A jack is provided on the Innova so you can connect the external
NiCd battery charger.

71-6417 - REV A 1
Innova Series Operator’s Manual

Specifications
Table 1-1 lists specifications for the Innova Series gas monitor.
Table 1-1 Specifications for the Innova Series Gas Monitor
Intrinsic Safety Rating Class I, Division 1, Groups A, B, C, and D
(Area Classification)
Sampling Method Sample-drawing
Response Time Initial: 5 seconds average (with 5-foot hose)
90% complete within 30 seconds (except NH3)
90% complete within 150 seconds (NH3)
Operating Temperature -4° F to 113° F (-20° C to 45° C)
Storage Temperature -22° F to 149° F (-30° C to 65° C)
Humidity 0 to 95% relative humidity (RH), non-condensing
Regulatory Approvals UL Classified; CSA Certified, Cenelec
Alarms Audible/visible, coded for gas and trouble. Also a
comfort beep that can be turned off.
Alarm Actions Low flow; low battery; rising gas reading (rising or
falling gas readings for oxygen); rising TWA and
STEL reading (toxic versions only); sensor failure;
temperature; datalog.
Alarm Functions Alarm levels are user-selectable in the Edit Alarms
Screen.
Display Digital liquid crystal display (LCD). Displays up to
four different gases at a time. A back light is available
on demand by momentarily pressing any button.
Power Source Four “D” size alkaline or NiCd batteries.
Battery life Alkaline - 24 hours @ 68° F(20° C)
Ni-Cd - 12 hours @ 68° F(20° C)
Due to the nature of alkaline cells, battery life is greatly
reduced at low temperatures and may be less than two
hours at -15° C. NiCd batteries are recommended for
low temperature applications.
Controls AIR, ON/OFF (power), and RANGE buttons.
Dimensions 10 in. L x 5 in. W x 6 in. H
(254 mm L x 152 mm W x 127 mm H)
Weight 5 pounds (2.25 kg)
Case High-impact, chemical resistant polycarbonate-
polyester plastic with RF-resistant coating.
Standard Accessories 1 Shoulder strap; hose; probe (with filter); operator’s
manual; and quick reference card.
1
Innova models for transformer testing include the following standard accessories: dilution fitting, and gas
collection bag.

2 71-6417 - REV A
 Sensor Specifications
71-6417 - REV A

Table 1-2 Innova Sensor Specifications and Factory Default Settings

Target Gas Display Increments Range Low Alarm High Alarm TWA Alarm STEL Alarm
HC 1% LEL 0 to 100% LEL 10% LEL 50% LEL N/A N/A
HC 0.1% VOL 0 to 5.0% VOL 0.5% VOL 2.5% VOL N/A N/A
HC 20 PPM 0 to 10,000 PPM 1000 PPM 5000 PPM N/A N/A
HC 1 10 PPM 0 to 1,000 PPM 100 PPM 500 PPM N/A N/A
CH4 2 1% VOL 0 to 100% VOL 10% VOL 50%VOL N/A N/A
O2 0.1% VOL 0 to 30.0% VOL 19.5% VOL 23.5% VOL N/A N/A
H2S 1 PPM 0 to 200 PPM 10 PPM 15 PPM 10 PPM 15 PPM
CO 1 PPM 0 to 250 PPM 25 PPM 200 PPM 25 PPM 200 PPM
Cl2 0.1 PPM 0 to 9.9 PPM 0.5 PPM 1.0 PPM 0.5 PPM 1.0 PPM
HCN 1 PPM 0 to 30 PPM 5 PPM 10 PPM 5 PPM 10 PPM
NH3 1 PPM 0 to 100 PPM 25 PPM 35 PPM 25 PPM 35 PPM
NO 1 PPM 0 to 100 PPM 25 PPM 75 PPM 25 PPM 75 PPM
NO2 0.1 PPM 0 to 9.9 PPM 3.0 PPM 5.0 PPM 3.0 PPM 5.0 PPM
PH3 0.01 PPM 0 to 3.0 PPM 0.3 PPM 1.0 PPM 0.3 PPM 1.0 PPM

Introduction
SO2 0.1 PPM 0 to 9.9 PPM 2.0 PPM 5.0 PPM 2.0 PPM 5.0 PPM
1 Soil Vapor and Fuel Vapor only.
2
Land Surveyor version only.
3
Innova Series Operator’s Manual

Optional Accessories
Table 1-3 lists the optional accessories available for the Innova Series gas
monitor. Part numbers for all accessories are in Appendix A, Parts List and
Accessories.

Table 1-3 Innova Series Optional Accessories

Accessory Description
NiCd battery charger Charges NiCd batteries while still in the monitor.
Provides a full charge over an 8-hour period, then
drops to a sustaining rate. Includes an alkaline
recognition feature that prevents you from attempting
to recharge alkaline batteries.
Optional hoses and probes Lengths of hose up to 100 feet are available (except Cl2
versions). Two optional 30-inch probes (aluminum
with dust filter or fiberglass with hydrophobic filter)
are available.
Dilution fitting Used to provide sufficient oxygen to allow proper
response of the hydrocarbon (LEL/ppm) sensor when
sampling inert environments.
Moisture trap Glass-bodied with a pleated paper filter that collects
excess water that is drawn into or condensed in the
sample hose.
Auxiliary hydrophobic A filter with a water-impervious membrane that
filter connects between the sampling hose and the Innova’s
inlet fitting.
Remote Buzzer Repeats all audible alarms of the Innova. Plugs into the
remote alarm jack (CHGR). Includes clip to attach to
lapel or other convenient place.
Carrying case A case that holds the Innova and the most commonly
used accessories. The case also has space to hold the
NiCd battery charger.
Confined space kit This carrying case can contain all equipment and the
most commonly used accessories necessary to safely
and accurately calibrate and use the Innova.
Calibration kit A kit consisting of a carrying case containing gas
cylinders, valves, and appropriate fittings to calibrate
the Innova.
Data retrieval kit Windows 95/98/NT compatible software necessary to
(Innova View) access the data stored in the Innova (includes serial
cable).

4 71-6417 - REV A
 Chapter
2

START UP & OPERATION

Preparing for Start Up
1. To remove the battery compartment cover, place the Innova upside
down, turn the large screw counterclockwise until it is loose in its
socket, then pull up.
2. Install four “D” size batteries according to the diagram inside the
battery compartment. Make sure that the battery polarities are
correctly oriented.

NOTE
Make sure the slide switch at the bottom of the battery compartment is
set to “ALK” for alkaline or “NI-CAD” for NiCd batteries, see
Chapter 6, Maintenance, Figure 6-1, Innova Battery Compartment.

3. Replace the battery compartment cover and turn the screw clockwise.
Tighten snugly to compress the gasket and seal the battery compartment.

CAUTION
Some toxic gas sensors require up to 15 minutes to stabilize, after
you install the batteries. If your Innova includes a toxic gas
sensor(s), do not turn on and use the Innova during this period. If
the unit is started up immediately after installing batteries, the
“BIAS” message may appear, see Chapter 6, Maintenance, for
instructions on installing or recharging batteries.

4. Verify that the hydrophobic filter and cotton ball are in good condition
and installed properly in the probe body.

NOTE
For transformer versions, connect the dilution fitting directly to the
disconnect coupler fitting on the front of the monitor, then connect the
10-inch probe to the dilution fitting.

5. Attach the probe to the female disconnect coupler fitting on the sample
hose.
6. Attach the other end of the hose to the female disconnect coupler on
the front of the instrument.

71-6417 - REV A 5
Innova Series Operator’s Manual

WARNING
Operation of instrument without probe/filter assembly attached
will result in pump damage and possible impaired performance.
Do not operate without probe/filter assembly attached.

Starting Up the Innova

Perform the following steps to start up the Innova and adjust internal circuits
to fresh air readings (demand zero). Please read this entire section before
turning on your Innova.

WARNING
Perform the following procedure in a “fresh air” environment
(environment known to be free of combustible and toxic gases and
of normal oxygen content).

1. If you are using NiCd batteries, make sure the batteries are fully
charged before you continue this procedure.
2. Press and hold the ON/OFF button for one second. The Innova begins
the warm-up period. Several messages appear during the warm-up
period, starting with the model and software version. Other screens
displayed are:
• Battery capacity on a scale from E (empty) to F (full capacity) for
new alkaline or a fully charged battery pack.
• Datalogging time left.
• Settings for High, Warning, STEL, and TWA alarms.
• The CAL DUE # DAYS indicates when the Innova is due for
calibration according to the schedule you accepted in the user
program when enabled.

NOTE
During the warm-up period the Innova determines if the toxic sensors
are properly biased. If the sensors require additional biasing, the screen
continuously displays “BIAS” with alarms instead of the gas reading.
Once the readings fall within acceptable limits, a fixed time-out is
initiated. During this time-out, the display will alternate between
“BIAS” and the sensor(s) reading. If an air adjust is performed during
this time-out period, it will not adjust the sensor(s) that are
experiencing the ‘bias time-out’ but will adjust the other sensors.

6 71-6417 - REV A
 Start Up & Operation

3. When the warm-up is complete, the buzzer will beep, lights will flash
several times, and display will read “WARM UP COMPLETE”.

NOTE
If the bump test is set to “BUMP TST ENABLED” the display will
cue the operator to perform an “AIR ADJUST” and then apply gas,
see Performing a Bump Test on Power-Up at the end of this chapter for
instructions.

4. Hold down the AIR button for 3 seconds until the display counts down
and the bar graph starts to scroll, then the display will read “DONE”
once the “fresh air” reading for all active sensors is complete (20.9%
for oxygen, 0 for all other sensors).

NOTE
After you “AIR ADJUST”, a “XXX” sensor failure may appear on the
display screen, see Chapter 3, Alarms, Sensor Alarms, to respond to
these messages.

Normal Operation
Normal operation is defined as any time after the warm-up period is complete
and the Innova is not alerting you to an alarm or failure.
After warm up is complete, the Innova simultaneously displays the current
gas concentration for all active sensors and the NORM icon. This display
screen is defined as the normal screen. The sensor labels will alternate
between the gas type and unit of measure.
During normal operation, the Innova Series gas monitor simultaneously
monitors for all target gases for your configuration of the Innova.
Monitoring Gases
To monitor for the target gas(es), expose the probe to the area to be
monitored. You can leave the Innova monitoring for an entire workday. The
Innova monitors and displays all applicable gas conditions at the same time.

CAUTION
If your Innova includes an Ammonia (NH3), Chlorine (Cl2), Sulfur
Dioxide (SO2), Hydrogen Cyanide (HCN), Nitric Oxide (NO),
Nitrogen Dioxide (NO2), Phosphine (PH3) sensor, avoid moisture
accumulation. The target gas is absorbed by moisture. Inspect the
probe’s hydrophobic filter and cotton ball frequently if you use the
Innova in an environment where moisture might accumulate.

71-6417 - REV A 7
Innova Series Operator’s Manual

While in normal operation, press any button to illuminate the display screen
back light.

NOTE
If the Comfort Alert is enabled, the Innova will beep and/or blink
every 3 minutes to remind the operator that the unit is turned on and
functioning.This feature can be disabled or enabled by the operator,
see Chapter 4, Alarms, Comfort Alert, for activating/deactivating this
feature.

Changing Combustible Ranges

The RANGE button is used to change the range of combustible gas detected.
The available ranges depend on the version of the instrument, see Chapter 1,
Introduction, Table 1-2. When changing to ppm range the reading is
displayed in the bottom row. If toxic sensor(s) are present the combustible
ppm reading will overwrite the toxic readings. If a toxic sensor(s) goes into an
alarm condition, the instrument will auto range back to the next combustible
range, and allow the toxic sensor(s) to be displayed.
To change the combustible gas range, press and release the RANGE button.
The unit will beep once and switch to the alternate range (e.g. % LEL to ppm).
See Appendix C, Innova Land Surveyor, for operation of the RANGE button
for Land Surveyor models.
If, while operating in the ppm range, the gas concentration exceeds the full
scale range, the Innova will automatically switch to the % LEL (or % VOL if
so configured) range.
Turning Off the Innova
Press and hold the ON/OFF button for 3 seconds. A power off message on the
display screen counts down from 3 seconds. The Innova sounds a pulsing
tone, and the backlight automatically turns on during the power off sequence.
To cancel the power off command, release the ON/OFF button before the
display screen goes blank.

NOTE
The STEL, TWA, maximum, and minimum (for O2) readings are
automatically reset on power down unless the Lunch Break mode is
enabled, see Chapter 4, User Program, Lunch Break Option for more
detail.

8 71-6417 - REV A
 Start Up & Operation

CAUTION
If the Innova will not be used for more than 4 weeks, remove the
batteries from the instrument. Failure to remove the batteries
prior to storage could result in damage to the instrument.

If your Innova uses rechargeable NiCd batteries, the batteries must be fully
charged before each use. When using alkaline batteries, it is best to install
fresh batteries before each use, see Chapter 6, Maintenance, to recharge NiCd
batteries or replace alkaline batteries.

Performing a Bump Test on Power-Up

When the bump test option is set to “BUMP TST ENABLED” the display
alerts the operator to perform a bump test after the warm-up cycle is
complete, see Chapter 4, User Program, Bump Test on Power-Up Option.
To perform the bump test:
1. Assemble the calibration kit, see Chapter 5, Calibration.
2. Turn on the Innova and wait for it to complete the warm-up cycle. The
display will read “AIR ADJUST NOW”. The screen will blink on and
off with alternating lights, prompting the operator to perform a fresh
air adjust.
3. Press and hold the AIR button for three seconds until “DONE”
appears. Once the Innova has been air adjusted, the display will begin
counting down, and prompt the operator to “APPLY GAS”,
alternating with “BUMP TEST”. An audible beep will sound.

NOTE
If an air adjust is not performed within 30 seconds, a “BUMP TEST
INCOMPLETE” message appears and the buzzer beeps on and off for
three seconds. The Innova will return to the normal operating mode.

4. Attach the tubing from the regulator to the probe tube, the Innova will
draw gas from the cylinder.
5. The Innova should respond to the detected gas and beep to indicate that
a Bump Test is being performed. All gas levels for standard gases are
displayed as in the normal operating mode.

NOTE
If no gas is detected during the “APPLY GAS” countdown, a “BUMP
TEST INCOMPLETE” message appears and the buzzer beeps on and
off for 3 seconds. The Innova will return to normal operating mode.

71-6417 - REV A 9
Innova Series Operator’s Manual

Once gas is detected a countdown is initiated. During this single beep

countdown the user should visually verify the sensors are responding
correctly.

NOTE
Bump test peak readings are recorded. Events are recorded as “BUMP
TEST COMPLETE” if the Innova detected gas, and “BUMP TEST
ABORTED” if the Innova did not detect gas.

A “BUMP TEST COMPLETE” message will be displayed. Then the

screen will alternate between “REMOVE GAS” and the gas readings.
6. Remove the tubing from the probe.
Once the instrument detects that the gas has been removed the screen
display an “ALARMS SILENCED” message. The alarms will be
silenced for a blind 30 second count.
After the 30 second count has elapsed an “ALARMS ACTIVE”
message will display briefly, audible alarms will be enabled and the
Innova will return to the normal operating mode.

NOTE
If the Innova does not respond properly during the bump test, follow the
instructions in Chapter 5, Calibration, or Chapter 6, Troubleshooting
sections of this manual.

NOTE
For instruments having a toxic sensor other than CO or H2S, calibration
gases are only available in single-gas cylinders. Therefore a multi-step
bump process has been programmed into the bump test routine. First,
the standard sensors are bumped using a multi-gas mixture. Then the
first Toxic sensor is bumped using a single-gas cylinder and repeated if
your unit has a second toxic sensor.

WARNING
Avoid using a gas mixture containing H2S for bump testing an
instrument with Cl2, NH3, NO2 or PH3 sensors.

10 71-6417 - REV A
 Chapter
3

ALARMS
This chapter describes Innova alarm indications, display messages, and
response for the following types of alarms:
• Gas Alarms
• Battery Alarms
• Sensor Alarms
• Pump Alarms
• Datalog Alarms
• Temperature Alarms
Gas Alarms
This section describes alarm indications, display messages, and response to
Low, High, STEL, and TWA gas alarms. The backlight automatically turns
on during all gas alarms.
Gas Alarm Indications
Table 3-1 lists the indications for each type of gas alarm.

Table 3-1 Alarm Indications (Gas Alarms)

Alarm Display Light/Buzzer
Low Gas Alarm Reading flashes slow flashing/pulsing
(once/second)
High Gas Alarm Reading flashes fast flashing/pulsing
(twice/second)
Decreasing O2 Alarm Reading flashes fast flashing/pulsing
Increasing O2 Alarm Reading flashes fast flashing/pulsing
STEL Gas Alarm STEL icon flashing/pulsing
TWA Gas Alarm TWA icon flashing/pulsing

71-6417 - REV A 11
Innova Series Operator’s Manual

Responding to Gas Alarms

1. Follow the established procedure for the type of gas alarm (Low, High,
STEL or TWA). If a procedure is not in place, establish one that is
appropriate for your application.
2. Reset the alarm circuit. The Innova resets the circuit according to the
alarm reset setting “AUTO RESET” or “MANUAL RESET”, see
Chapter 4, User Program, Alarm Latch option to enter the program and
display and/or update the setting.
• If the alarm reset setting is auto reset, the Innova resets the
applicable alarm circuit after the gas reading falls below the alarm
setting (or rises above for decreasing O2).
• If the alarm reset setting is manual reset, press the→ ON/OFF
button to reset the alarm circuits after the gas reading falls below the
alarm setting (or rises above for decreasing O2).
Battery Alarms
This section describes alarm indications, display messages, and response for
the following battery alarms: Low Battery and Replace Battery. The
backlight automatically turns on during all battery alarms

Battery Alarm Indications.

Table 3-2 Alarm Indications (Battery Alarms)
Alarm Display Light/Buzzer
Low Battery LOW BATTERY double flash/beep (every two minutes)
battery icon flashes
Battery Failure REPLACE BATTERY constant flash/beep
(ALK) battery icon steady
Battery Failure RECHARGE BATTERY constant flash/beep
(NiCd) battery icon steady

Responding to Battery Alarms

This section describes response to Low Battery and Replace/Recharge
Battery alarms.
1. For low battery alarm, proceed to step 2 as soon as possible. The
Innova will continue to function properly for approximately 1/2 hour
until the Replace/Recharge Battery screen and alarm sounds. For
battery failure alarm, turn off the Innova immediately. It is not
functioning as a gas detection device.

12 71-6417 - REV A
 Alarms

2. You must replace the alkaline or recharge the NiCd batteries within
your monitor before putting it back into operation, see Chapter 6,
Maintenance, for procedures to replace or recharge your batteries.

WARNING
Always replace or recharge batteries in a “fresh air” environment
(environment known to be free of combustible and toxic gases and
of normal oxygen content).

Sensor Alarms
This section describes alarm indications, display messages, and response to
sensor failure alarms. The backlight automatically turns on during all failure
alarms.
Sensor Alarm Indications
Table 3-3 lists the indications for each type of failure alarm.

Table 3-3 Alarm Indications (Failure Alarms)

Alarm Display Light/Buzzer
Sensor Failure XXX Continuous

Responding to Sensor Alarms

A sensor failure alarm can occur during normal operation or calibration.
Alarms that occur during calibration are described in Chapter 5, Calibration.
1. Examine the display screen to determine which sensor is failing. The
failing sensor displays “XXX” instead of the gas reading for a sensor
that has failed an air adjust, Calibration, or gas missing sensor.
2. Perform an air adjust, if the sensor(s) continues to fail, perform a
calibration, see Chapter 5, Calibration.
3. If the sensor(s) continue to fail, replace the sensor(s), see Chapter 6,
Replacing Sensors.
4. You can enter the Innova user program and change the sensor status
setting to “OFF”. All information for an absent sensor is removed
from the normal screen and recorded as XXX in the datalog.

WARNING
The Innova does not display gas readings, initiate alarms, compute
averages, or store data for “OFF” sensor(s).

71-6417 - REV A 13
Innova Series Operator’s Manual

Pump Alarm
This section describes alarm indications, display messages, and response to
sensor, memory, and pump failure alarms. The backlight automatically turns
on during all failure alarms.
Pump Alarm Indications
Table 3-4 lists the indications for each type of failure alarm.

Table 3-4 Alarm Indications (Failure Alarms)

Alarm Display Light/Buzzer
Pump Failure PUMP FAILED alternating/beeping (every second)
alternating with
PRESS→ TO CLEAR
alternating with gas
readings.
X in place of spinning icon

Responding to a Pump Alarm

1. Check the hose, probe, and filter for debris.
2. Press the → ON/OFF button to reset the alarm circuit and return to the
normal screen with the pump icon spinning.
3. If the pump restarts, and the monitor functions normally, the problem
was momentary. If the indications remain, turn the monitor off, then
investigate the probe, hose, or internal flow system for obstructions,
dirty filter, or loose sensor(s) inside instrument.

WARNING
Operation of instrument without probe/filter assembly attached
will result in pump damage and possible impaired performance.
Do not operate without probe/filter assembly attached.

14 71-6417 - REV A
 Alarms

Datalog Alarm
This section describes the alarm indication, display message, and response for
the datalog full alarm. A datalog full alarm occurs when the datalog becomes
full and the datalog full command was accepted as “STOP ON FULL”.
Datalog Alarm Indications
Table 3-5 lists the indications for the datalog full alarm.

Table 3-5 Alarm Indications (Datalog Full Alarm)

Alarm Display Light/Buzzer
Datalog Full LOGGING STOPPED flashing/pulsing (every 30 seconds)

Responding to the Datalog Alarm

Perform one of the following procedures to reset the datalog alarm.
• Download the data, save and clear the log when prompted.
• Enter the Datalog Features Menu, and update the datalog full
command to “OVRWRITE ON FULL”, see Chapter 4, User
Program, Log Memory Manager option.
• Enter the Datalog Features Menu and clear the datalog, see Chapter 4,
User Program, Clear Log Memory.
Temperature Alarm
The Innova has an alarm to alert the user that the unit is being operated at a
temperature that exceeds its operating specification of -20°C to +45°C (-4°F
to +113°F). If the temperature is outside this range, the following message
appears every 30 seconds and the sensor readings may be inaccurate: “TEMP
WARNING” alternating with the gas readings.
The buzzer beeps and lights flash twice every 30 seconds, and the condition
will clear automatically when the temperature returns to within the operating
limits.

NOTE
The temperature alarm is user enabled or disabled, with the default
setting “disabled”, see Chapter 4, User Program, Temperature Alarm.

71-6417 - REV A 15
Innova Series Operator’s Manual

16 71-6417 - REV A
 Chapter
4

USER PROGRAM
This chapter includes an introduction to the Innova User Program and step-
by-step procedures to run the program.
About the User Program
The Innova User Program allows you to view and update factory-set
parameters and display several items, such as the battery voltage, datalog
status, current temperature, time, and date.
The menu-driven program has three main menus:
• Display Menu
• Advanced Features Menu
• Datalog Features Menu
The user navigates through the user program by using the three buttons:
→ ON/OFF
↑ AIR
↓ RANGE.
• The right arrow (→) is used to accept within the menu.
• The up arrow ( ↑ ) and down arrow ( ↓ ) are used to scroll either
forward or backwards through the menus.

NOTE
The Innova has a time-out feature. If no buttons are pressed for 10
seconds while in the Display Menu, Advanced Features Menu or
Datalog Features Menu the display will flash and buzzer will beep for
10 seconds. If no buttons are pressed during this time, the Innova will
return to the normal operating mode.

71-6417 - REV A 17
Innova Series Operator’s Manual

Display Menu
In the Display Menu the following may be viewed:
• Battery Capacity
• Peak Readings (Option to Clear)
• STEL Levels (Toxic Sensors Only)
• TWA Levels (Toxic Sensors Only)
• Temperature
• Date and Time
• Operator ID (Option to Change)
• Location ID (Option to Change)
• Exit
To enter the Display Menu:
1. Press and hold the ↓ RANGE button for 3 seconds. The display will
show “DISPLAY MENU” and count down from 3 seconds. Your first
screen will display the “BATTERY CAPACITY”.
2. To scroll to the next screen, use the ↑ button. To scroll backwards
through the menu, press the ↓ button. Continue to scroll through the
screens to display the desired information, clear Peak Readings, or
change an Operator or User ID.
3. To exit the program, press either ↑ or ↓ until you get to the ‘EXIT’
display, then press → to exit to the normal operating mode.

NOTE
When Peak values are displayed, after 3 seconds the display reads
“PRESS → TO CLEAR”, so the user can clear peak values if desired.

To change a User or Operator ID:

NOTE
Operator and Location must first be entered before a selection can be
made, see Edit Operator, Location, and Instrument ID’s Chapters.

1. For the Operator ID and Location ID screens, to change the selection

press the → button, and then use ↑ or ↓ to designate a new selection.
2. Press the → button to accept the selected ID.
18 71-6417 - REV A
 User Program

Accessing Password-Protected Menus

A password may be used to add extra security to the following menus:
• Advanced Features protected by “PASSWORD”
• Datalogging Menu protected by “LOGWORD”
• Calibration Menu protected by “CALWORD”
See Create/Edit CalWord/PassWord/LogWord for details on creating a
password. If enabled, a code must be entered before the user may enter
these menus.
To enter a PassWord, LogWord, or CalWord:
1. Press and hold ↑ and ↓ for 3 seconds. The message “FEATURES
MENU” appears on the display and counts down from 3 seconds, and
then displays “BEGIN CAL”. Press ↓ to scroll to “ADVANCED
FEATURES” or “DATALOG MENUS”.
2. Stop scrolling at the desired screen and press → to accept. The display
now reads “PASSWORD”, “LOGWORD”, or “CALWORD” and
“* * *” (if protection has been enabled). The cursor is on the first
asterisk.

NOTE
If the “***” does not appear when entering any of the three menus,
security protection is not enabled.

3. Press ↑ or ↓ to scroll to the correct character.

4. Press → to accept. The cursor moves to the next character.
5. Repeat steps 4 and 5 until all three characters are accepted. If your
entry is correct, you will advance to the next screen. If your entry is
incorrect, you will return to the original screen. Begin at step 2 to re-
enter your password.

71-6417 - REV A 19
Innova Series Operator’s Manual

Advanced Features Menu

The Advanced Features Menu allows you to change the following parameters
of the instrument.
The menu is as follows:
• Edit Alarms
• O2 Alarm Configuration
• Alarm Latch Option
• Lunch Break Option
• Backlight Delay Selection
• Calibration Interval Selection
• Bump Test Option
• Sensor Select
• Setting Auto Cal Gas Values
• Comfort Alert Options
• Temperature Alarm
• Change Cal Word
• Change Password
• Change Logword
• Exit
To enter the Advanced Features Menu:
1. Press and hold both the ↑ AIR and ↓ RANGE buttons for 3 seconds.
The screen displays “FEATURES MENU” and counts down from 3
seconds.
2. The first screen displayed after the countdown is “BEGIN CAL”.
Press the ↓ button, then press the → button. If prompted by
“PASSWORD” and “***”, enter a password as described in the
previous section, Accessing Password-Protected menus. When entered
correctly, or if PassWord is not enabled, you are now at the first option
“EDIT ALARMS” in the Advanced Features Menu.

NOTE
The Innova has a time-out feature. While in the Advanced Features
Menu, if a button is not pressed within 10 seconds the display will flash
and the buzzer will beep for 10 seconds. If no button is pressed during
the 10 seconds, the Innova will return to normal operating mode.

20 71-6417 - REV A
 User Program

EDIT ALARMS

This allows the user to increase or decrease the High and Low Alarms for
each gas. See Chapter 1, Introduction, Table 1-2, Sensor Specifications for
factory default settings.

1. Press → to enter the HC screen. The high alarm reading will flash.

2. Press ↑ or ↓ to increase or decrease the alarm setting. If you choose to

keep the alarm as is, press → to move to the next alarm setting.

3. Continue step 2 until you have set all gas alarms. After the last gas alarm
is set, the display automatically returns to the “EDIT ALARMS”
screen.

NOTE
You will scroll through the following gas alarms, appropriate to your
version of Innova: HC, O2, TOXIC1, TOXIC2.

4. Press ↑ or ↓ to continue scrolling through the Advanced Features Menu.

O2 ALARM CONFIGURATION

This option allows you to set the oxygen alarms (High and Low) to either
increasing or decreasing.

Options you can choose are:

• ONE INC/ONE DEC - The warning alarm is set to decreasing at

19.5%VOL and high alarm increasing at 23.5%VOL.

• TWO ALRM/DECREASE - Both alarms are set to decrease. Warn at

19.5%VOL and High at 18.0%VOL.

• TWO ALRM/INCREASE - Both alarms are set to increase. Warn at

22.5%VOL and high at 23.5%VOL.

The factory default setting is “ONE INC/ONE DEC”.

To enter this menu from the Advanced Features Menu:

1. Press → to accept “O2 ALARM CONFIG”.

2. Press ↓ or ↑ to scroll through the settings. Press the → to accept the

setting.

3. Press ↓ to continue scrolling through the Advanced Features Menu.

71-6417 - REV A 21
Innova Series Operator’s Manual

ALARM LATCH OPTION

This option changes the alarm setting to either “AUTO RESET” for
automatically resting the alarm or “MAUNAL RESET”, in which case an
alarm must be manually reset. The factory default setting is “AUTO
RESET”.
1. Press → to accept “ALARM LATCH”.
2. Press ↓ or ↑ to scroll between settings. Press → to accept the setting.
3. Press ↓ to continue scrolling through the Advanced Features Menu.
LUNCH BREAK OPTION
The lunch break option allows the user to either reset averages (STEL and
TWA) or retains averages when the Innova is turned off. The factory default
setting is “RESET AVERAGES”.

NOTE
If the lunchbreak menu is set to “RETAIN AVERAGES”, the Innova
will retain the STEL and TWA averages when turned off. If the
lunchbreak menu is set to “RESET AVERAGES”, the Innova will
reset the averages when turned off.

To change the lunch break menu from the Advanced Features Menu:
1. Press → at the screen “LUNCH BREAK”.
2. Press ↓ or ↑ to scroll through the settings. Press → to accept the
setting.
3. Then press ↓ to continue scrolling through the Advanced Features
Menu.
BACKLIGHT DELAY SELECTION
The backlight delay feature sets the number of seconds the backlight is
illuminated after any button is pressed. The factory default is setting is 5
seconds. Your options are in 5 second increments up to 60 seconds, and 2, 3,
5, or 10 minutes.
To change the backlight delay setting from the Advanced Features Menu:
1. Press → at the screen “BKLIGHT DELAY”.
2. Press ↓ or ↑ to scroll through the settings. Press → to accept the
setting.
3. Then press ↓ to continue scrolling through the Advanced Features
Menu.
22 71-6417 - REV A
 User Program

CAL INTERVAL SELECTION

This sets the number of days between calibrations.

NOTE
The number of days left until calibration is displayed during the warm-
up cycle. When the Innova is due for calibration, display reads “CAL
OVERDUE” and buzzer and lights, pulse and flash after the warm-up
cycle is complete.

Your options are no cal reminder, 1 to 6 one-day increments and 1 to 26 one-

week increments. The factory default setting is “NO CAL REMINDER”,
which means the calibration reminder function is turned off.

NOTE
For optimum performance, calibrate the Innova before every use.

To change the calibration reminder setting from the Advanced Features

Menu:
1. Press → at the screen “CAL INTERVAL”.
2. Press ↓ or ↑ to scroll through the settings.
3. Press → to accept the setting.
4. Then press ↓ to continue scrolling through the Advanced Features
Menu.
BUMP TEST ON POWER-UP OPTION
The bump test option enables or disables the Innova to cue the user to apply
gas for a bump test immediately after the Innova warm-up cycle is complete.
The factory default setting is “BUMP TST DISABLED”. A bump test is
sometimes necessary, to ensure the Innova is detecting gases before each use.
To change the bump test setting from the Advanced Features Menu:
1. Press → at the screen “BUMP TEST”.
2. Press ↓ or ↑ to scroll between “BUMP TST DISABLED” to “BUMP
TST ENABLED”.
3. Press → to accept the setting.
4. Then press ↓ to continue scrolling through the Advanced Features
Menu.
71-6417 - REV A 23
Innova Series Operator’s Manual

SENSOR SELECT
The sensor select function turns the HC and O2 sensor(s) on or off. Both toxic
1 and toxic 2 sensor(s) may be turned off or changed to monitor another gas
type provided the corresponding sensor(s) are installed in the proper location.

WARNING
The Innova does not display gas readings, initiate alarms, compute
averages, or store data for “OFF” sensor(s).

To change the sensor select setting from the Advanced Features Menu:
1. Press → at the screen “SENSOR SELECT”. All four gases and their
settings will display. The cursor and reading will flash for HC.
2. Press ↑ or ↓ to change the setting to “ON” or “OFF”. If you choose to
keep the setting, as is, press → to move on to the O2.
3. Repeat step 2 for O2, press → to move on to the Toxic 1 sensor.
4. For the toxic sensors press ↑ or ↓ to select or change the sensor type,
press → to move on to Toxic 2.
5. Continue step 4 for Toxic 2.
6. Press ↓ to continue scrolling through the Advanced Featuring Menu.

NOTE
You will scroll through the following sensor selections, appropriate to
your version of Innova: HC, O2, Toxic 1, Toxic 2.

SETTING AUTOCAL GAS VALUES

This function allows you to set the auto calibration values to the concentration
of the cylinders you are using.

NOTE
The factory default settings for a standard four gas instrument are HC
50%LEL, O2 12.0%VOL, H2S 25 PPM, and CO 50 PPM. These are
the values that match Thermo GasTech’s multi-gas cylinders.

To change the value(s) from the Advanced Features Menu:

1. Press → at the screen “AUTOCAL GAS VAL”. All four gases and
their values will display. The cursor and reading will flash for HC (if
installed and ON).
2. Press ↑ or ↓ to change value up or down.
3. Once you’ve reached the desired value, press → to move on to the HC
ppm. If you choose to keep the setting, as is, press → to move on to the
next sensor.
24 71-6417 - REV A
 User Program

4. Continue this process through all gases.

NOTE
You will scroll through the following autocal gas values, appropriate to
your version of Innova: HC, O2, TOXIC1, TOXIC2.

71-6417 - REV A 25
Innova Series Operator’s Manual

COMFORT ALERT OPTIONS

The comfort alert is a friendly reminder that the instrument is on. The
reminder begins 3 minutes after the last button press and will sound every 3
minutes while in the normal operating mode. The alert has four options:

• Beep Only - Every 3 minutes the buzzer sounds.

• Blink Only - Every 3 minutes the lights flash.

• Blink and Beep- Both buzzer beeps and lights flash every 3 minutes.

• Both Off - Option disabled.

The factory default setting is “BLINK AND BEEP”.

NOTE
The 3 minute comfort alert timer is reset after any button is pressed by
the user.

To change the setting from the Advanced Features Menu:

1. Press → at the screen “COMFORT ALERT”.

2. Press ↓ or ↑ to scroll through the options.

3. Press → to accept the setting. Press ↓ to continue scrolling through the

Advanced Features Menu.

TEMPERATURE ALARM

The Innova has an alarm to alerts the user that the Innova is being operated
at a temperature that exceeds its operation specification of -4ºF to 113ºF
(20ºC to 45ºC). When the temperature alarm is activated, the buzzer and
lights alternate every 30 seconds. The factory default setting is “TEMP
ALR DISABLED”.

To change the setting from the Advanced Features Menu:

1. Press → at the screen “TEMP ALARM”.

2. Press ↓ or ↑ to change to either “TEMP ALR DISABLED” or

“TEMP ALR ENABLED”.

3. Press → to accept the setting.

4. Press ↓ to continue scrolling through the Advanced Features Menu.

26 71-6417 - REV A
 User Program

ENTER/EDIT CALWORD, PASSWORD, OR LOGWORD

These options add extra security to the calibration process (CALWORD),
Advanced Features Menu (PASSWORD), and Datalog Features Menu
(LOGWORD). By changing the default factory setting of “***”, you
automatically turn this option on, and password protect that area of the user
program. If turned on, a code must be entered before one may continue a
process. If “***” is entered, the password security is turned off. The factory
default setting for each password is “***”, or disabled.
To add or change the code from the Advanced Features Menu,
1. Press → at the appropriate screen “CHANGE CALWORD”,
“CHANGE PASSWORD” or “CHANGE LOGWORD”. The
screen will display either three asterisks “***”, or the three digit code,
with the cursor on the first character.
2. Press ↓ or ↑ to change the first character of the code. You have the
option of “*, 0 through 9”.

NOTE
When entering a CalWord, PassWord, or LogWord all three characters
must be a number, 0 through 9. A password containing one or more “*”
is not valid, no security protection is implemented if a password
contains an “*”.

3. Press → to accept the setting, and move on to the second character. If

you do not want to change the first character, press → to move on to
the second character.
4. Repeat the process through the third character.
5. Press ↓ to continue scrolling through the Advanced Features Menu.
EXIT
The ‘EXIT’ screen exits you from the Advanced Features Menu. Press → at
“EXIT” to return to the normal operating mode.

71-6417 - REV A 27
Innova Series Operator’s Manual

Datalog Features Menu

The Datalog Features Menu allows you to change the following parameters of
the instrument.
The menu is as follows:
• Adjust Date and Time
• Edit Operator IDs
• Edit Location IDs
• Edit Instrument ID
• Log Memory Manager Option
• Log Averages Selection
• Log Interval Selection
• View Log Status
• Clear Log Memory
• View Log Began
• Exit
To enter the Datalog Features Menu:
1. Press and hold both the ↑ AIR and ↓ RANGE buttons for 3 seconds.
The screen displays “FEATURES MENU” and counts down from 3
seconds.
2. The first screen displayed after the countdown is “BEGIN CAL”.
Press the ↓ button twice. The display will read “DATALOG
MENUS”.
3. Press the → button. If prompted by “LOGWORD” and “***”, enter
a LogWord as described earlier in this chapter. When entered
correctly, or if LogWord is not enabled, you are now at the first option
“ADJUST DATE AND TIME”.

NOTE
The Innova has a time-out feature. While in the Advanced Features
Menu, if a button is not pressed within 10 seconds the display will flash
and the buzzer will beep for 10 seconds. If no button is pressed during
the 10 seconds, the Innova will return to normal operating mode.

28 71-6417 - REV A
 User Program

ADJUST DATE AND TIME

The date and time are adjustable by the user. The default factory settings are
Pacific Standard Time. The innova uses a 24-hour format to display time. For
example, 21:30:00 is 9:30 PM.
To change the date and time from the Datalog Menu:
1. Press → at the screen “ADJ DATE AND TIME”. The date and time
will appear, with the cursor on the month that is flashing.
2. Press ↑ or ↓ to change to the correct month. Once you’ve reached the
correct value, press → to move to the day of the month. If you choose
to keep the setting, as is, press → to move to the year.
3. Continue this process through remaining date and time settings. Once
you’ve completed and pressed → past the seconds, the “ADJ DATE
AND TIME” screen displays, and your selection has been accepted.
EDIT OPERATOR, LOCATION, AND INSTRUMENT IDS
The IDs are used to allow the user to identify the Operator and Location of
personnel operating the Innova. The information is stored in the datalogging
memory for retrieval at a later time. The Innova has three IDs the user can
update:
• The Operator ID screen allows the Innova to reference logged data
with 16 different operator codes.
• The Location ID screen allows the Innova to reference logged data
with 64 different location codes.
• The Instrument ID screen allows you to uniquely identify the Innova.
The Operator and location IDs are a two row, 8 characters per row, field. Each
character accepts A-Z, a-z, 0-9, asterisk (*), and blank space. The Innova
User Program stores up to 16 Operator and 64 Location IDs.
Each Operator ID is uniquely referenced by a number from 1 to 16. Each
Location ID is referenced by a number from 1 to 64. You can accept (and
record in the datalog) an Operator and/or Location ID by its reference
number.
To add or change the Operator and Location ID from the Datalog Menu:

NOTE
The factory default setting for Operator, Location, and Instrument IDs
are blank.

71-6417 - REV A 29
Innova Series Operator’s Manual

1. Press → at the appropriate screen “EDIT OPER ID”, “EDIT LOC

ID”, or “INST ID”. The first ID screen will appear, you can change
this screen by pressing → to accept and start editing this ID or you can
press ↑ or ↓ to scroll through the other ID screens. Then press → to
accept.
2. Press ↓ or ↑ to change the first character of the ID. You have the option
of “*, 0 - 9, A-Z, a-z, and blank”.
3. Press → to accept the character or space, and move to the next
character. If you do not want to change the first character, press → to
move to the next character.
4. Repeat the process through both rows of characters.
5. Press ↓ to continue scrolling through the Datalog Menu.

NOTE
For the Operator ID and Location ID screens, the ID’s reference
number is displayed on the bottom line. Press the ↑ button to continue
scrolling through the various operators and locations you want to
display or update. Then press → to edit or update the screen.

LOG MEMORY MANAGER

This instructs the datalog memory to either overwrite the oldest data,
“OVRWRITE ON FULL”, or stop recording data, “STOP ON FULL”,
when the memory is full. The factory default setting is “OVRWRITE ON
FULL”.

NOTE
If you accept “STOP ON FULL”, the Innova alerts you with a datalog
full alarm when the Innova is no longer recording data, see Chapter 3,
Alarms. If you accept “OVRWRITE ON FULL”, the Innova begins
writing over the oldest data when the datalog is full. The overwritten
data is not retrievable.

To change the setting, from the Datalog Features Menu:

1. Press → at the screen “LOG MEM MANAGER”.
2. Then press ↑ or ↓ to display the correct setting.
3. Press → to accept the setting.
4. Then press → to continue scrolling the Datalog Features Menu.
30 71-6417 - REV A
 User Program

LOG AVERAGES
This parameter controls which averages (STEL or TWA) the Innova stores in
the datalog. Available selections for each toxic sensor that is active are:
• LOG ALL - Log both STEL and TWA
• LOG TWA ONLY - Log TWA only
• LOG STEL ONLY - Log STEL only
• NO AVE LOGGING - Neither STEL or TWA are logged
The factory default setting is “LOG ALL”.
To change the setting for logging STEL and TWA from the Datalog Features
Menu:
1. Press → at the screen “LOG AVERAGES”.
2. Press ↓ or ↑ to scroll between options until you get to the appropriate
screen.
3. Press → to accept the setting.
4. Press ↓ to continue scrolling through the Datalog Features Menu.
LOG INTERVAL
This parameter instructs the Innova how often to record data in the datalog.
You have the option of 5, 15, 30, 60, 90, 300, or 900 seconds. The factory
default setting is “LOG EVRY 60 SEC”.
To change the setting for log interval from the Datalog Features Menu:
1. Press → at the screen “LOG INTERVAL”.
2. Press ↓ or ↑ to scroll between options until you get to the appropriate
screen.
3. Press → to accept the setting.
4. Press ↓ to continue scrolling through the Datalog Features Menu.
Table 4-1 illustrates approximately how long it takes to fill the datalog for the
various datalog interval settings.
Table 4-1 Datalog Capacity Specifications
(accumulated on time)
Sample Interval Capacity (No Alarm Activity)
5 seconds 18 hours
15 seconds 55 hours
30 seconds 111 hours
60 seconds 9 days
90 seconds 13 days
300 seconds 36 days
900 seconds 108 days

71-6417 - REV A 31
Innova Series Operator’s Manual

LOG STATUS
This is a display screen only, which indicates the number of datalog hours or
days left in memory that is not currently occupied.
To display the number of hours or days left, from the Datalog Features Menu:
1. Press → at the screen “LOG STATUS”. The screen displays reads
“XX LOG HRS LEFT” or “XX LOG DAYS LEFT” (“XX” for
number of hours or days available in memory). The display will
automatically go back to the “LOG STATUS” screen.
2. Press ↑ or ↓ to continue scrolling the Datalog Features Menu.
CLEAR LOG
To clear the data in the memory, from the Datalog Features Menu:
1. Press → at the screen “CLEAR LOG”. The screen displays “ ↑ AND
↓ TO CLEAR”.
2. Press and hold ↑ and ↓ for 3 seconds and release. The display reads
“CLEARING LOG” and beeps for several seconds. When complete
the display indicates “LOG CLEARED”.

NOTE
If you do not want to clear the log, press the → button and continue
scrolling through the Datalog Features Menu.

CAUTION
You cannot recover data after you clear the log. Download all
required data before you clear the log.

LOG BEGAN
This screen displays the date and time when the log was last cleared.
To display this data and time, from the Datalog Features Menu:
1. Press → at the screen “LOG BEGAN”. The screen displays the data
and time. For example, “7/12/99 10:00:00”. The display automatically
goes back to the “LOG BEGAN” screen.
2. Press ↑ or ↓ to continue scrolling on the Datalog Features Menu.
EXIT
The ‘EXIT’ screen exits you from the Datalog Features Menu. Press → to exit
the menu and return to the normal operating mode.
32 71-6417 - REV A
 Chapter
5

CALIBRATION
This chapter contains instructions to prepare the calibration kit and calibrate
the Innova Series gas monitor. For Land Surveyor and Transformer Gas
Tester instruments, see Appendix C.

WARNING
Accurate calibration of the Innova Series gas monitor is essential
to ensure correct readings of gas and oxygen concentrations.
Incorrect or improper calibration can impair the performance of
the instrument and place you in potential danger if hazardous
conditions exist.

Preparing the Calibration Kit

Perform the following steps to prepare the Innova calibration kit.

WARNING
LEL response will vary for different gases. For best accuracy,
LEL calibration should be done using the target gas of the LEL/
ppm sensor. (Expected relative combustible responses, listed in
Appendix C, Interference Factors, are not verified by UL.)

1. Verify that the calibrating area contains a level surface to set the
Innova and calibration kit accessories upon.
2. Turn on the Innova instrument. Enter the Display Menu and verify
that the Battery Capacity screen displays at least three bars (see
“Display Menu” at the beginning of Chapter 4, User Program for a
detailed description).
3. Carefully screw the threaded end of the regulator into the gas
cylinder.
4. Attach the sample tubing over the fitting on the regulator.

71-6417 - REV A 33
Innova Series Operator’s Manual

Calibrating the Innova

The Innova offers two calibration options, automatic and manual.
• The automatic calibration (AUTO CAL) displays all active
sensors on the display screen at the same time. You can calibrate all
active sensors simultaneously using a multi-gas cylinder available
from Thermo GasTech. The concentrations set in the Auto Cal Gas
Value screen must match the multi-gas mixture, see Chapter 4, User
Program, Setting Auto Cal Gas Values.
• During the manual calibration (MAN CAL) only one active sensor
is displayed on the screen at a time, only one sensor is calibrated
during a manual calibration. It is recommended to use a single gas
cylinder for manual calibrations. During a manual calibration you
may manually change the concentration of the gas before the gas is
applied. The default value is that set in the Auto Cal Gas Values
screen, see Chapter 4, User Program, Setting Auto Cal Gas Values.
Auto Calibration

WARNING
Calibrate the Innova in a “fresh air” environment (environment
known to be free of combustible and toxic gases and of normal
oxygen content).

NOTE
If you use the automatic adjustment method to calibrate the sensor,
make sure the gas cylinder contains the same concentrations of the
target gas as the values set in the “AUTOCAL GAS VAL” menu, see
Chapter 4, User Program, Setting Auto Cal Gas Values.

1. Hold down the AIR button for 3 seconds until the display counts down
and the bar graph starts to scroll, then the display will read “DONE”
once the “fresh air” reading for all active sensors is complete (20.9%
for oxygen, 0 for all other sensors).

NOTE
After you complete the fresh air adjustment, a “XXX” may appear on
the display screen in place of a sensor reading. The buzzer and lights
will be on steady, see Calibration Alarms section at the end of this
chapter to respond to this message.

34 71-6417 - REV A
 Calibration

2. Press and hold ↑ and ↓ for 3 seconds. The message “FEATURES

MENU” appears on the display and counts down from 3 seconds, and
then displays “BEGIN CAL”.
3. Press → to accept and begin a calibration. If a CalWord has not
enabled, the “AUTO CAL” screen is displayed. Skip the next section
and proceed with Calibrating with the Auto Calibration (cont.).

NOTE
If prompted by “CALWORD” and “***”, enter a password as
described in the next section.

Entering a CalWord
A password may be used to add extra security to the Calibration with a
“CALWORD”, see Chapter 4, User Program, Create/Edit CalWord/
PassWord/LogWord. If turned on, a code must be entered before the user may
perform a calibration.
To enter a CalWord (if activated):
1. Press and hold ↑ and ↓ for 3 seconds. The message “FEATURES
MENU” appears on the display and counts down from 3 seconds, and
then displays “BEGIN CAL”.
2. Press → to accept. The display reads “CAL WORD” and “* * *”. The
cursor is on the first asterisk.
3. Press ↑ or ↓ to scroll to the correct character.
4. Press → to accept. The cursor moves to the next character.
5. Repeat steps 3 and 4 until all three characters are accepted. If correct,
the next display reads “AUTOCAL”. If the CalWord is incorrect, the
display reads “BEGIN CAL” message. Begin at step 2 to start over.
Auto Calibration (cont.)
4. Press → to accept “AUTO CAL”. The screen displays “BEGIN
AUTOCAL” alternating with “APPLY GAS” counting down from
30 seconds. If no gas is detected during this period, the screen returns
to “BEGIN CAL”.
5. Attach the tubing from the regulator to the probe tube, the Innova will
draw gas from the gas cylinder.
First, the display will read “CAL IN PROCESS”. Then the screen
displays “CAL TIME LEFT” (counting down from 75 seconds)
alternating with the gas readings.

71-6417 - REV A 35
Innova Series Operator’s Manual

NOTE
During calibration, datalogging is disabled but calibration events are
recorded in the log.

6. When calibration is complete, the display reads “AUTOCAL

PASSED” and then alternates between “>ACCEPT, ABORT” and
the gas readings. The gas labels alternate with ‘PASS”. Press → to
accept. The display will show “CAL ACCEPTED”, and then
alternate between “REMOVE GAS” and the gas readings.
If you choose to abort, press ↓ to scroll to “ABORT” then → to accept
the abort option.
The display will read “CAL ABORTED” and then alternate between
“REMOVE GAS” and the gas readings.

NOTE
A “WEAK” or “FAIL” flag may appear in place of the “PASS” flag
in the case of a weak or failed sensor. See the instructions in the
Calibration Alarms section, later in this chapter for corrective action.

7. Remove the tubing from the probe. After fresh air has been detected,
the display will alternate between “ALARMS SILENCED”, and the
readings, and then return to the normal operating mode, after an
“ALARMS ACTIVE” message is displayed.
8. Unscrew the regulator from the cylinder, leave the components of the
calibration kit assembled for convenience and place in the storage
case.
Calibration of Toxic Gases other than H2S & CO or for 0-100% Vol
TC Sensor
These calibration gases are only available in single-gas cylinders. Therefore a
multi-step calibration process has been programmed into the Auto Calibration
routine. First, the standard sensors are calibrated using a multi-gas mixture.
Then the first sensor is calibrated using a single-gas cylinder, and repeated if
your unit has a second sensor.
1. Begin the calibration process by performing an Auto Calibration. The
non-standard sensor(s) will be ignored during the multi-gas
calibration.

36 71-6417 - REV A
 Calibration

2. When the multi-gas Auto Calibration is complete, a double beep

prompts the user to begin the non-standard sensor calibration(s). The
default gas concentration is displayed with the ADJ icon. Change the
concentration if the gas cylinder does not match the concentration
displayed.
3. Once the concentrations match, Press → to begin the calibration.
4. Apply the calibration gas and follow the prompts to complete the
calibration process. When the first non-standard sensor is complete,
and a second non-standard sensor is present, a double beep prompts the
user to begin the second sensor calibration. Repeat steps 2, 3 and 4.

WARNING
Avoid using a gas mixture containing H2S for calibrating an
instrument with Cl2, NH3, NO2 or PH3 sensors.

Manual Calibration

WARNING
Calibrate the Innova in a “fresh air” environment (environment
known to be free of combustible and toxic gases and of normal
oxygen content).

1. Hold down the AIR button for 3 seconds until the display counts down
and the bar graph starts to scroll, then the display will read “DONE”
once the “fresh air” reading for all active sensors is complete (20.9%
for oxygen, 0 for all other sensors).

NOTE
After you complete the fresh air adjustment, a “XXX” may appear on
the display screen in place of a sensor reading. The buzzer and lights
will be on steady, see the Calibration Alarms section at the end of this
chapter to respond to this message.

2. Press and hold ↑ and ↓ for 3 seconds. The “FEATURES MENU”

appears on the display and counts down from 3 seconds. Then displays
“BEGIN CAL”.
3. Press → to accept and begin calibration. If a Calword has not enabled,
the “AUTO CAL” screen is displayed.

NOTE
If prompted by “CALWORD” and “***”, enter a password, see
Entering CalWord earlier in this chapter.

71-6417 - REV A 37
Innova Series Operator’s Manual

4. With the “AUTO CAL” message displayed. Press the ↓ to advance to

the “MAN CAL” screen. Press → to accept “MAN CAL”.
5. The screen displays the first active sensor. Press the → to accept or
press ↓ to advance to the next gas depending on what sensor you want
to calibrate. To accept the desired selection, press →.
6. The default gas concentration is displayed with the ADJ icon and a
double beep to indicate you may change the default concentration. The
default concentration is set in the Auto Cal Gas Value, see Chapter 4,
User Program, Setting Auto Cal Gas Values.
7. Press ↑ or ↓ to adjust the value to match the concentration of the
calibration gas as read on the cylinder label.
8. Press → to accept the displayed concentration. The display reads
“BEGIN MAN CAL” alternating with “APPLY XX GAS” (where
XX is the gas selected) and counts down from 45 seconds. If no gas is
detected during this period, the screen returns to “BEGIN CAL”
9. Attach the tubing from the regulator to the probe tube, the Innova will
draw gas from the gas cylinder.
When gas is detected, the display will read “CAL IN PROCESS” for
XX seconds, with the SPAN icon on. Then the screen displays “CAL
TIME LEFT” (counting down) alternating with the gas reading.
NOTE
During calibration, logging is disabled but calibration events are
recorded in the log.
10. When calibration is complete, the display reads “MAN CAL
PASSED” and then alternates between “>ACCEPT, ABORT” and
the gas reading. The gas label alternates with “PASS”.
11. Press → to accept. The display will show “CAL ACCEPTED”, and
then alternate between “REMOVE GAS” and the all active sensors gas
readings.

NOTE
If the calibration gas used interferes with any of the other sensors a
non-zero reading may result, this does not affect the calibration of those
sensor(s).
12. If you choose to abort, press ↓ to scroll to “ABORT” then → to accept
the abort option. The display will read “CAL ABORTED” and then
alternate between “REMOVE GAS” and all active sensor gas
readings.

38 71-6417 - REV A
 Calibration

NOTE
The “WEAK” or “FAIL” flag may appear in place of the “PASS” flag
in the case of a weak or failed sensor. See the instructions in the Sensor
Failed Alarms section later in this chapter for corrective action.
13. Remove the tubing from the probe. After fresh air has been detected, the
display will alternate between “ALARMS SILENCED”, and the
readings, and then return to the normal operating mode, after an
“ALARMS ACTIVE” message is displayed.
14. Unscrew the regulator from the cylinder, leave the components of the
calibration kit assembled for convenience and place in the storage case.
Calibration Alarms
The Innova may alert you to one or more of the following alarms during
calibration:
• Sensor Failed Alarm
• Weak Sensor
• Calibration Incomplete
Sensor Failed Alarm
If you attempt to air adjust or calibrate a faulty sensor, the Innova alerts you
with a Sensor Failed Alarm.
INDICATIONS
• The backlight turns on automatically.
• The gas reading is replaced by XXX.
• Lights and Buzzer are steady.
RESPONDING TO A SENSOR FAILED ALARM
1. Complete the calibration procedure for the remaining sensors (if
applicable), then return to the normal screen. The normal screen will
continue to notify you of the sensor failure with a message.
2. Turn off the Innova, then verify that the sensor is installed properly,
see Chapter 6, Maintenance, Replacing Sensors. Verify that the
calibration gas value is correct in the Auto Cal Gas Valve Screen.
3. If the calibration gas value is correct, and the sensor is installed
properly, turn the instrument on and repeat the air adjust and
calibration procedures.
4. If the Fail condition persists, replace the sensor, see Chapter 6,
Replacing Sensors, then calibrate the new sensor.

71-6417 - REV A 39
Innova Series Operator’s Manual

NOTE
You can enter the Innova User Program, Advanced Features Menu, and
change the sensor status setting to “OFF”. All information for an
“OFF” sensor is removed from the normal screen and recorded as a
blank in the datalog.

Weak Sensor Warning

If the sensor that you are calibrating is nearing the end of its useful life, the
Innova alerts you with a Weak Sensor message.
The gas flag will show “WEAK” at the conclusion of the calibration period.
RESPONDING TO A WEAK SENSOR
1. If you are manually calibrating the Innova, verify that you are correctly
adjusting the gas concentration to match the concentration of the
calibration gas. If using the Auto Cal method, verify that the gas
concentration in the calibration gas cylinder matches the Auto Cal Gas
Value, see Chapter 5, User Program, Setting Auto Cal Gas Values.

NOTE
A weak sensor is still functioning properly and can continue to be used.
However, it is near the end of its useful life, and should be replaced as
soon as possible, see Chapter 6, Maintenance, Replacing Sensors, for
replacement instructions.

40 71-6417 - REV A
 Chapter
6

MAINTENANCE
This chapter contains maintenance information to ensure proper operation
and reliability of the Innova Series gas monitor.

WARNING
Perform all procedures in a “fresh air” environment (environment
known to be free of combustible and toxic gases and of normal
oxygen content).

Preventive Maintenance
The following are daily, monthly, quarterly, and “as required” preventive
maintenance suggestions to ensure the reliability of the Innova Series gas
monitor.

NOTE
In instances where the Innova is in continual or everyday use, Thermo
GasTech recommends that you perform preventive maintenance
procedures more often than suggested in the following sections.

Daily
BATTERIES
The Innova should always contain fully-charged NiCd batteries or
sufficiently powered alkaline batteries before each day’s use. You can verify
the capacity of the batteries using the Display Menu. To verify battery
capacity:
1. Press and hold the RANGE button, for three beeps, then release the
button.
If the display shows less than three bars, recharge the NiCd batteries
or replace the alkaline batteries as described later in this chapter.
2. Press the ↑ or ↓ buttons to scroll to exit.
3. Press → to return to the normal operation mode.

71-6417 - REV A 41
Innova Series Operator’s Manual

CALIBRATION
For optimum efficiency of the monitor, calibrate the Innova before each use.
If multiple calibrations over a period of days indicate that only a minimum of
adjustments are required, the frequency of calibration can be changed to
weekly or monthly, depending on how often the monitor is used, and how
demanding the monitoring environment is.

NOTE
At the very least, “challenge” the normal operation of the oxygen (O2)
sensor (if applicable) before every use.
Exhale over the inlet of the probe as you watch the display. The O2
reading should decrease. When the O2 reading decreases to 19.5%,
the alarm should activate. This confirms normal operation of the O2

SAMPLE-DRAW SUBCOMPONENTS
Verify the proper operation of the flow alarm circuit by holding your finger
over the inlet of the probe for a few seconds. The pump shuts off, “PUMP
FAILED”, and “PRESS → ΤΟ CLEAR” alternate with the gas readings
display, the spinning icon changes to an “X”. The audible alarm sounds every
second alternating/beeping. Press → to restart the pump circuit. The icon will
change from an “X” or failed condition, and the pump will restart.
Monthly/Quarterly
CALIBRATION
Calibrate the sensors at least every one to three months. Calibration frequency
depends on the frequency of use and also the environmental conditions in
which you use the Innova.
As Required
ALARM CIRCUITS
Periodically verify that all visual and audible alarms function properly.

WARNING
Verify alarm circuits in a “fresh air” environment (environment
known to be free of combustible and toxic gases and of normal
oxygen content).

To verify the alarm circuits, use a concentration of the proper gas sample that
is greater than the preset warn or alarm levels. Verify that the LEDs
illuminate and the buzzer sounds. Also verify that the display reading in alarm
flashes during the alarm sequence.
42 71-6417 - REV A
 Maintenance

SAMPLE-DRAW SUBCOMPONENTS
Periodically check the probe, hoses, internal filter, and tubing for obstructions
that can accumulate over time. This is especially important if you use the
Innova in a dusty or dirty environment. Replace the cotton and hydrophobic
filter elements if they become contaminated or discolored.

WARNING
Operation of instrument without probe/filter assembly attached
will result in pump damage and possible impaired performance.
Do not operate without probe/filter assembly attached.

Troubleshooting

NOTE
See Chapter 3, Start Up & Operation, for any of the various alarm
indications that you may encounter while the Innova Series gas
monitor is in normal use.

The troubleshooting section on the following pages describes symptoms and

probable causes and recommends action for problems you may encounter
with the Innova.

71-6417 - REV A 43
44

Innova Series Operator’s Manual

Table 6-1 Troubleshooting
Condition Symptom(s) Probable Cause(s) Recommended Action
Unable to recharge • The battery charger does 1. Verify that the battery selector switch is set to NI-CAD.
• The battery selector switch
NiCd batteries not indicate that the is set to ALK. 2. Verify that NiCd batteries are installed.
batteries are receiving a • The batteries are not 3. Replace the batteries.
charge. installed or alkaline 4. Attempt to recharge the batteries with a different battery
• After recharging, the batteries are installed. charger (same type). If the condition clears, the battery charger
batteries do not have a • The batteries are defective.
is defective.
sufficient charge. • The battery charger is 5. If the difficulty continues, contact Thermo GasTech, for
defective. further instruction.
Unable to use the • You cannot operate the • The battery selector switch 1. Verify that the battery selector switch is set to NI-CAD.
battery charger as Innova with the battery is set to ALK. 2. Verify that NiCd batteries are installed.
a continuous charger/continuous
operation adapter • The batteries are not 3. If you are using the battery charger as a continuous operation
operation adapter in place. installed or alkaline adapter for longer than an 8-hour period, disconnect then
batteries are installed. reconnect the battery charger to restart the charging timer.
• The battery charger is 4. Replace the batteries.
supplying a voltage that is 5. Use a different battery charger (same type) as a continuous
too high. operation adapter. If the condition clears, the battery charger is
• The battery charger is
71-6417 - REV A

defective.
defective. 6. If the difficulty continues, contact Thermo GasTech, for
further instruction.
 Table 6-1 Troubleshooting (Continued)
71-6417 - REV A

Condition Symptom(s) Probable Cause(s) Recommended Action

Unable to calibrate • You cannot set the • The gas cylinder is empty 1. Verify that the gas cylinder contains an adequate and fresh
a sensor sensor’s “fresh air” or out-dated. supply of the calibrating gas.
(except O2 sensor) reading to zero. • The sensor is defective. 2. Replace the sensor as described later in this chapter.
• Sensor shows “xxx”. 3. If the difficulties continue, contact Thermo GasTech, for
further instruction.
Unable to calibrate • You cannot fresh air the • The O2 sensor is defective. 1. Replace the O2 sensor as described later in this chapter.
a sensor O2 reading to 20.9. 2. If the difficulties continue, contact Thermo GasTech, for
(O2 sensor only) further instruction.

Maintenance
45
Innova Series Operator’s Manual

Recharging NiCd Batteries

WARNING
Recharge the batteries only in a “fresh air” environment
(environment known to be free of combustible and toxic gases and
of normal oxygen content).

Check NiCd battery capacity by using the Display Menu, see Chapter 4, User
Program.

CAUTION
For optimum battery capacity, the batteries should be fully
depleted before you recharge them. Repeated recharging of
partially discharged batteries will reduce the battery capacity and
operating time of the batteries.
Use only the battery chargers listed in Appendix A, Parts Lists, to
recharge the batteries.

1. Verify that the battery selector switch is set to NI-CAD.

2. Verify that the voltage listed on the battery charger is the same as the
AC outlet (115V or 220V), then plug the charger into the outlet.
3. Plug the other end of the charger into the CHGR jack at the side of the
Innova.
4. Verify that the charger’s amber light goes on. Allow the batteries to
charge for at least 8 hours. Once the batteries are fully charged, the
green light on the charger goes on (the amber light remains on).

NOTE
If the switch position is in the NI-CAD position, and alkaline batteries
are installed, the battery charger will not charge alkaline batteries. If
you attempt to recharge alkaline batteries, the amber light on the
battery charger will flash.

A completely depleted battery recharges in approximately eight

hours. The battery charger automatically cuts the charging current to a
sustaining rate when the batteries are fully recharged. You can leave
the charger plugged in indefinitely.

46 71-6417 - REV A
 Maintenance

Replacing Components

WARNING
Replace components in a “fresh air” environment (environment
known to be free of combustible and toxic gases and of normal
oxygen content).

Replacing Batteries

WARNING
When replacing batteries, use only the batteries supplied by
Thermo GasTech (refer to Appendix A, Parts List). They are a
special, high capacity type and are required to maintain agency
certification of your Innova Series.
• Duracell MN1300 (Alkaline)
• SAFT 410907-104 (NiCd)
To maintain Cenelec certification of your Innova Series monitor,
the hex head screw must be installed to secure the battery lid in
place.

1. Turn off the Innova by pressing and holding the ON/OFF button
while the Innova sounds three beeps.
2. Turn the captive screw at the middle of the battery compartment door
counterclockwise, then remove the door.
3. Remove all four spent batteries.
4. Verify that the ALK/NI-CAD switch is set to the proper setting, see
Chapter 6, Maintenance, Figure 6-1 Innova Battery Compartment.

WARNING
Never mix NiCd batteries together with alkaline batteries, this can
cause internal damage to the monitor.

5. Install four new batteries (refer to the raised picture in the battery
compartment for the proper orientation of the batteries).

NOTE
Always replace all four batteries at the same time

6. Install the battery compartment door and tighten screw until snug
against gasket.

71-6417 - REV A 47
Innova Series Operator’s Manual

Alkaline/Ni-Cad
battery switch

Figure 6-1 Innova Battery Compartment

WARNING
If applicable, follow all federal, state, or local regulations
regarding the disposal of alkaline and NiCd batteries.
Some toxic gas sensors require up to 15 minutes to stabilize, after
you install the batteries. If your Innova includes a toxic gas
sensor(s), do not turn on and use the Innova during this period. If
the unit is started up immediately after installing batteries, the
“BIAS” message may appear, see Chapter 6, Maintenance, for
instructions on installing or recharging batteries.‘

48 71-6417 - REV A
 Maintenance

Replacing Sensors

WARNING
Recalibrate the Innova whenever you replace a sensor.
If applicable, follow all federal, state, or local regulations
regarding the disposal of electrochemical sensors. The toxic
sensors contain sulfuric acid. The O2 sensor contains an alkali
solution.

6 5 4 3 2 1
TOX2 TOX1 PSW PUMP OXY
TB1
O

W
P
Y
B
R

Figure 6-2 Innova Series Sensor Locations and Connection

Assignments
1. Turn off the Innova.

CAUTION
To avoid damage to internal circuitry, remove the batteries before
opening the main housing.

2. Open the Innova, then separate the two halves.

3. Locate the sensor you want to replace in the flow block, see Figure 6-2.

71-6417 - REV A 49
Innova Series Operator’s Manual

1
2
3
4
5
6

Figure 6-3 Removing a Sensor from the Innova

NOTE
Figure 6-2 illustrate sensor assignments for the standard Innova. The
sensor assignment for your Innova may be different depending on the
Innova model you are using. For models that have less than four
sensors, empty sensor cavities are filled with sensor plugs.

4. Disconnect or unplug the sensor’s connection to the Innova.

CAUTION
If you use a tool to loosen the sensor from the flow block, be
careful not to damage the sensor housing or the flow block.

5. Using your fingers, tilt the sensor from side to side to loosen it, then
pull the sensor straight out of its flow block cavity, see Figure 6-3.
6. Insert the replacement sensor into the cavity, then apply downward
pressure on top of the sensor until it is firmly seated in the cavity. For
toxic sensors, make sure not to bend or damage the sensor pins.
7. Reconnect the sensor’s connection to the Innova main board.
For the combustible gas sensor, connect the purple, white, and red
wires to the proper terminals (P, W, R) on the terminal block (TB1).
For the remaining sensors, plug the sensor wire connector into the
applicable socket (OXY, TOX1, or TOX2).

50 71-6417 - REV A
 Maintenance

8. Close the Innova housing and re-install batteries.

CAUTION
Some toxic gas sensors require up to 15 minutes to stabilize, after
you install the batteries. If your Innova includes a toxic gas
sensor(s), do not turn on and use the Innova during this period. If
the unit is started up immediately after installing batteries, the
“BIAS” message may appear, see Chapter 6, Maintenance, for
instructions on installing or recharging batteries.Calibrate the
Innova before you use it again.

Replacing the Pump

CAUTION
To avoid damage to internal circuitry, remove the batteries before
opening main housing.

1. Turn off the Innova, then separate the halves.

2. Locate the pump in the flow block, see Figure 6-2.
3. Disconnect the pump wire connector from the main board socket
labeled PUMP.
4. Remove the nut that secures the pump bracket to the pump, then
remove the bracket.
5. Remove the pump from the flow block by rocking it back & forth.

CAUTION
When you insert the new pump, do not place pressure on the
pump motor. The pump motor is the dark-colored circular
component at the top of the pump.

6. Before installing the new pump, apply a thin film of petroleum jelly
lubricant or O-ring grease to the outside of the barbs. Be careful not to
get lubricant into the end of the barbs, as this could clog the pump.

CAUTION
Do not use lubricant that contain silicone, as this can poison the
combustible sensor.

7. Place the pump bracket in its previous position, then secure the bracket
to the pump with the nut you removed in step 4.
8. Reconnect the pump wire connector to the main board socket labeled
PUMP, close and secure the Innova housing, and re-install batteries.

71-6417 - REV A 51
Innova Series Operator’s Manual

Replacing the Internal Filter

CAUTION
To avoid damage to internal circuitry, remove the batteries before
opening main housing.

1. Turn off the Innova, remove batteries, and then separate the halves.
2. Locate the internal filter, see Figure 6-2. It is connected to the inlet
fitting by a small polyurethane tube.
3. Disconnect the polyurethane tubes from the slip-on barbs on the filter.
4. Push the tubes onto the barbs on the new filter, close and secure the
Innova, and re-install batteries.
Replacing the Probe’s Hydrophobic Filter
1. Unscrew the probe body’s two halves. Be careful not to lose the o-
rings that seal the filter.
2. Remove the filter and cotton ball from the probe half that mounts to the
Innova (you may need to use a small screwdriver to pry the filter loose).
3. Install the new filter and cotton ball in place of the filter and cotton ball
you removed.
4. Make sure the O-rings are in place, then reassemble the probe halves.

52 71-6417 - REV A
 Appendix
A

PARTS LIST
Table A-1 lists replaceable parts and accessories for all Innova Series.
Table A-1 Parts List and Accessories
Part No. Description
06-1255 Tubing, polyurethane, 5/16 in. OD x 3/16 in. ID
10-0491 Screw, hex head
13-0110 Shoulder strap, adjustable
20-0650 Carrying case, Innova Series instrument
20-0651 Case, confined space kit (case only)
30-0042 Pump
30-0044 Kit, rebuild pump (30-0042/30-0042-01)
33-0152-01 Filter, Hydrophobic (for 80-0187 probe)
33-0160 Filter, internal
33-1031 Cotton ball, pkgs. of 24 (for 80-0187 probe)
49-1201 Battery, alkaline, D size
49-1501-01 Battery, NiCd, D size
49-2149 Charger, NiCd batteries, dual-rate, 230 VAC
49-2150 Charger, NiCd batteries, dual-rate, 115 VAC
49-2151 Charger, NiCd batteries, dual-rate, 12 VDC
52-2033 Remote audible alarm, with lapel clip
52-2033-01 Remote audible alarm, with 20-foot cord and magnet
61-0123 Sensor, combustibles (LEL/ppm)
65-0612 Sensor, oxygen (O2)
65-0613 Sensor, oxygen (Fuel Vapor only)
65-2417 Sensor, sulfur dioxide (SO2)
65-2426-01 Sensor, carbon monoxide (CO)
65-2426-02 Sensor, hydrogen sulfide (H2S)

71-6417 - REV A 53
Innova Series Operator’s Manual

Table A-1 Parts List and Accessories

Part No. Description
65-2431-01 Sensor, chlorine (Cl2)
65-2431-02 Sensor, hydrogen cyanide (HCN)
65-2431-03 Sensor, nitrogen oxide (NO)
65-2431-07 Sensor, ammonia (NH3)
65-2431-08 Sensor, phosphine (PH3)
65-2431-10 Sensor, nitrogen dioxide (NO2)
71-6416 Quick Reference Card
71-6417 Operator’s Manual
77-0043 Kit, Cenelec (includes allen wrench and hex head screw)
80-0187 Probe with hydrophobic filter
80-0187-04 Probe, fiberglass, 30-inch, with hydrophobic filter
80-0211 Moisture trap
80-0405 Dilution fitting, 50%
80-0504 Hose, teflon, 5 feet (for Cl2/Fuel & Soil Vapor)
80-0505 Hose, polyurethane, 5 feet
80-0511 Hose, polyurethane, 10 feet
80-0516 Hose, polyurethane, 15 feet
80-0520 Hose, polyurethane, 20 feet
80-0525 Hose, polyurethane, 25 feet
80-0530 Hose, polyurethane, 30 feet
80-0550 Hose, polyurethane, 50 feet
80-0599 Hose, polyurethane, 100 feet
81-0002 Cylinder, 2% H2 (17 liter)
81-0007 Cylinder, 40% LEL hexane (17 liter)
81-0012 Cylinder, 50% LEL CH4 (17 liter)
81-0064 Cylinder, 50 PPM CO (17 liter)
81-0078 Cylinder, 100% N2 (17 liter)
81-0151 Cylinder, 25 PPM H2S (58 liter)
81-0153 Cylinder, 50% LEL CH4/ 40% CO2/10% N2 (17 liter)

54 71-6417 - REV A
 Appendix A

Table A-1 Parts List and Accessories

Part No. Description
81-0154 Cylinder, 50% LEL CH4/25 PPM H2S/50 PPM CO/12% O2 (58 liter)
81-0155 Cylinder, 50% LEL CH4/50 PPM CO/12% O2 (103 liter)
81-0170 Cylinder, 5 PPM SO2 (58 liter)
81-0175 Cylinder, 25 PPM NO (58 liter)
81-0180 Cylinder, 5 PPM NO2 (58 liter)
81-0190 Cylinder, 5 PPM Cl2 (58 liter)
81-0191 Cylinder, 25 PPM NH3 (58 liter)
81-0192 Cylinder, 10 PPM HCN (58 liter)
81-0193 Cylinder, 0.5 PPM PH3 (58 liter)
81-0226-01 Cal kit, O2
81-0226-02 Cal kit, CH4
81-0226-03 Cal kit, CO
81-0226-04 Cal kit, CH4 (Land Survyor)
81-0226-05 Cal kit, Hexane (Soil Vapor)
81-0226-06 Cal kit, Hexane/O2 (Fuel Vapor)
81-0226-07 Cal kit, H2 (Transformer Gas Tester)
81-0226-08 Cal kit, H2/O2 (Transformer Gas Tester)
81-0227-01 Cal kit, H2S
81-0227-02 Cal kit, Cl2
81-0227-03 Cal kit, HCN
81-0227-04 Cal kit, NH3
81-0227-05 Cal kit, NO
81-0227-06 Cal kit, No2
81-0227-07 Cal kit, SO2
81-0227-08 Cal kit, PH3
81-0227-09 Cal kit, CH4/O2/CO
81-0227-10 Cal kit, CH4/O2/CO/H2S
81-0227-11 Cal kit, CH4/O2/CO/Cl2
81-0227-12 Cal kit, CH4/O2/CO/HCN

71-6417 - REV A 55
Innova Series Operator’s Manual

Table A-1 Parts List and Accessories

Part No. Description
81-0227-13 Cal kit, CH4/O2/CO/NH3
81-0227-14 Cal kit, CH4/O2/CO/NO
81-0227-15 Cal kit, CH4/O2/CO/NO2
81-0227-16 Cal kit, CH4/O2/CO/SO2
81-0227-17 Cal kit, CH4/O2/CO/PH3
81-0227-18 Cal kit, CH4/O2/H2S/HCN
81-0227-19 Cal kit, CH4/O2/H2S/NO
81-0227-20 Cal kit, CH4/O2/H2S/SO2
81-0228-01 Cal kit, CH4/O2/Cl2/NO
81-0228-02 Cal kit, CH4/O2/Cl2/PH3
81-0228-03 Cal kit, CH4/O2/HCN/NH3
81-0228-04 Cal kit, CH4/O2/HCN/NO
81-0228-05 Cal kit, CH4/O2/HCN/PH3
81-0228-06 Cal kit, CH4/O2/NH3/NO2
81-0228-07 Cal kit, CH4/O2/NH3/PH3
81-0228-08 Cal kit, CH4/O2/NO/NO2
81-0228-09 Cal kit, CH4/O2/NO/PH3
81-0228-10 Cal kit, CH4/O2/NO2/PH3
81-0228-11 Cal kit, CH4/O2/SO2/PH3
81-0228-12 Cal kit, CH4/O2/CO (Land Surveyor)
81-0228-13 Cal kit, CH4/O2/H2S (Land Surveyor)
81-1063 Regulator, demand flow (34/58/103 liter cylinders)
81-1064 Regulator, demand flow (17 liter cylinders)
81-6500 Confined space kit (non H2S)
81-6501 Confined space kit (any H2S version)
82-0200 1/8” hex wrench
82-5032 Cable, serial
82-5071 Data retrieval kit

56 71-6417 - REV A
 Appendix
B

INTERFERENCE FACTORS
The following factors interfere with the accurate gas measurement capability
of the Innova:
• Filament poisoning
• Rich mixtures
• Oxygen-deficient mixtures
• Oxygen-enriched mixtures
• Interfering gases
• Response to various combustible gases
Filament Poisoning
Silicone vapors and chlorine and fluorine compounds, such as chlorinated
hydrocarbons, can damage the HC sensor and interfere with accurate LEL
readings.
Such compounds, even in small proportions, should be avoided. Verification
checks on known gas samples are necessary, if the possibility of exposure to
these compounds exists.
High Concentration of Combustible Gas
With rich mixtures of combustible gases, the instrument displays the
following indications (refer to Table B-1)

Table B-1 Indications with High Combustible Gas

Concentrations
Cause Indication

Mixtures up to 100% LEL Reading displayed.

Mixtures between LEL and 100% displayed.

Upper Explosive Limit (UEL)

Mixtures above the UEL The reading increases to 100% LEL, then
comes back down. Very rich mixtures read
close to zero.

71-6417 - REV A 57
Innova Series Operator’s Manual

Oxygen-Deficient Mixtures
Samples containing less than 10% oxygen may give low LEL readings by
starving the combustible gas reaction in the sensor. Such mixtures will also
cause a low oxygen alarm. As a rule, 10% oxygen or more gives a full reading
on any combustible gas up to the LEL.
Oxygen-Rich Mixtures
Samples containing combustible gases that have more than normal proportion
of oxygen will give a normal reading. However, they should be avoided
because the flame arrestor used is not dense enough to arrest flames from
combustible gas in oxygen. Such mixtures will also cause a high oxygen
alarm.

WARNING
Do not attempt to use the Innova on samples of combustible gas in
oxygen; for example, oxy-acetylene mixtures. Instead, use sample
mixture in air.

Interfering Gases
The CO sensor responds to some other gases besides CO. The CO sensor has
a charcoal filter that prevents interference from H2S and some of these other
gases. However, continuous exposure may saturate the filter and break
through as CO indication. Hydrogen, ethylene, and acetylene will pass
quickly through the filter, and thus are strong interferences, while heavier
olefins and aromatic hydrocarbons will break through in time, making sensor
replacement necessary.

58 71-6417 - REV A
 Appendix B

Relative Combustible Response

The Innova is normally calibrated with methane gas, but responds to a variety
of hydrocarbons (refer to Table B-2).

Table B-2 Relative Response of New Innova Series LEL/ppm

Hydrocarbon Indicator to Various Gases and Vapors
LEL RANGE PPM RANGE

CONVERSION FACTOR: CONVERSION FACTOR:

GAS or VAPOR
% LEL
VOL VS. VS.
VS. HEXANE VS. HEXANE
METHANE METHANE

Acetone 2.5 0.73 1.7 1.6 0.48

Acetylene 2.5 0.63 1.5 1.2 0.34
Benzene* 1.2 1.0 2.3 1.0 0.30
Butadiene, 1, 3- 2.0 0.52 1.21 0.98 0.29
Carbon Monoxide 12.5 0.39 0.9 5.9 1.8
Chloroform* NONE - - 9.8 3.0
Dimethyl 2.2 1.4 3.3 2.7 0.81
Formamide*
Ethyl Acetate* 2.0 0.9 2.1 1.6 0.48
Ethyl Alcohol 3.3 0.70 1.6 2.1 0.64
Heptane 1.05 1.00 2.3 0.99 0.30
Hexane 1.1 1.00 2.3 1.0 0.30
Hydrogen 4.0 0.33 0.7 1.3 0.39
Methane 5.0 0.43 1.0 3.3 1.0
Methyl Chloroform 7.5 0.68 1.6 4.9 1.5
Methyl Ethyl Ketone 1.4 1.09 2.5 1.7 0.52
Pentane 1.5 0.71 1.7 1.0 0.30
Propane 2.1 0.56 1.3 1.3 0.39
Propyl Acetate* 1.7 0.77 1.8 1.4 0.42
Propyl Alcohol, iso- 2.0 0.89 2.1 1.9 0.58
Propyl Alcohol, n- 2.2 0.81 1.9 1.9 0.58
Styrene Monomer 0.9 4.2 9.7 2.7 0.82
Toluene 1.1 1.2 2.9 1.2 0.36
Trichloroethylene 8.0 1.0 2.4 6.8 2.1
Xylenes, isomer mix .9-1.1 3.0 7.0 1.7 0.52
* These response factors are estimates, based on factors for 6 volt GasTechTor sensor adjusted for characteristics of Innova sensor.
Please note that response varies from one sensor to another and the relative response of a sensor can change with the age of the sensor. These data
should be used for estimation purposes only.
Assuming an instrument calibrated directly for hexane or methane, but used to observe a different gas, the equivalent response in % LEL (or ppm)
for that gas is secured by multiplying the observed% LEL (or ppm) reading by the LEL (or ppm) scale conversion factor.

71-6417 - REV A 59
Innova Series Operator’s Manual

60 71-6417 - REV A
 Appendix
C

SUPPLEMENTAL INSTRUCTIONS
Innova Land Surveyor (LS)
The Innova LS consists of two different models (PPM/% LEL/% GAS and
PPM/%LOW/%HI) that permits measurements of methane gas in three
ranges of sensitivity:

Table C-1 Ranges for Innova LS

PPM/%LEL/%GAS PPM/%LOW/%HI
0-10,000 PPM 0-10,000 PPM

0-100% LEL 0-5.0% Gas by VOL [%LOW], equivalent to 0-100% LEL

0-100% GAS by VOL* 0-100% Gas by VOL [%HI]*

* By means of Thermal Conductivity Sensor

Operation
For the PPM/%LOW/%HI, see the text in brackets [ ].
Operation in the first two ranges is exactly as described in the text of this
manual, except that if the PPM reading should exceed its range (10,000
PPM) the range will automatically switch to the % LEL [%LOW] range. If
the % LEL [%LOW] reading should exceed 100% LEL, equivalent to 5%
methane, the Innova LS will automatically switch to the 0-100% GAS range
[%HI] range. The display will show the legend “% GAS” [“%HI”] following
the gas reading while in this range.
The % GAS [%HI] range may also be entered manually from the % LEL
[%LO] range by pressing the RANGE button until the display shows the
desired range. If it is likely that high concentrations will be encountered, to
prolong the life of the LEL/PPM sensor, start out in the % GAS [%HI] range.
The Innova LS does not automatically range down. To exit the % GAS
[%HI] range and return to the LEL [%LOW] range press the RANGE
button. There is a 30 second warm-up period after the transition, during this
period the display count from W 30 to W 1 before gas readings are
displayed.

71-6417 - REV A 61
Innova Series Operator’s Manual

NOTE
If the sample is very high in methane content and also very low in
oxygen content, the unit may not auto-range upscale. If during
sampling the % LEL [%LOW] indication rises rapidly and then
decays, manually switch to the % GAS [%HI] range as described
above to determine the methane content.

Precautions
Be aware that the methane/air mixtures in the range 5% to 15% by volume
are highly explosive. The Innova is Intrinsically Safe, and is not a source of
ignition, but there are many common ignition sources such as static electrical
discharges or sparks from metal tools that can ignite such mixtures. The
relationship between ranges is correct only for methane. Some rough
approximations may be made for gases such as propane and butane, but
values will not be accurate, and should not be used for safety considerations.

WARNING
Initiate Fresh Air Zero adjustment only in a non-hazardous
environment free of combustible or toxic gas content and
consisting of normal oxygen content. To do otherwise could cause a
serious error in the indicated gas level shown on the display, and
result in failure of the Innova LS to properly indicate the degree of
hazard. Also, use care not to initiate Fresh Air Zero immediately
after a range change, as this can cause an error in the “clean air”
baseline.

62 71-6417 - REV A
 Appendix C

Land Surveyor Calibration (Auto)

Calibration is as described earlier in this manual, with one exception: the %
GAS [%HI] sensor is calibrated separately from the Catalytic (PPM/%LEL
or PPM/%LO) sensor. Therefore a multi-step calibration process has been
programmed into the Auto Calibration routine. First, the standard sensors are
calibrated using a multi-gas mixture. Then TC sensor is calibrated using a
multi-gas cylinder, containing 50% CH4 (Methane), CO2 (Carbon Dioxide),
and N2 (Nitrogen).
1. A separate air adjust is required for the % LEL and % GAS ranges.
Perform an air adjust in the % LEL and % GAS ranges before
calibration.
2. Begin the calibration process by performing an Auto Calibration. The
TC sensor will be ignored during the multi-gas calibration.
3. When the multi-gas Auto Calibration is complete, a double beep
prompts the user to begin the TC sensor calibration. The default gas
concentration is displayed with the ADJ icon to indicate you may
change the concentration. If the concentration on the gas cylinder
does not match the concentration displayed.
4. Press to begin the calibration.
5. Apply the calibration gas and follow the prompt to complete the
calibration process.
Land Surveyor Calibration (Manual)
Manual calibrations are performed as described in Chapter 5, Calibration.
Once in the manual calibration screen, the location of the sensor(s) are as
illustrated below (CH4/O2 version shown).

CH4 O2
TC

1. Press → to accept or ↓ to advance to the next gas depending on what

sensor you want to calibrate.

71-6417 - REV A 63
Innova Series Operator’s Manual

Pump
The Land Surveyor uses a pump capable of drawing a sample from a source
that is at a vacuum of up to 60” of water column. If pump replacement is
required, the pump listed in the Parts List below must be specified.Parts List

Parts List
See Parts List in Appendix A for a more complete list of replacement parts
and accessories.
Replacement Parts
30-0042-01 Pump, Land Surveyor
61-0124 Sensor, Thermal Conductivity
81-0012 Cylinder, 50% LEL CH4 (17 liter)

81-0226-04 Cal kit, CH4

81-0228-12 Cal kit, CH4/O2/CO
81-0228-13 Cal kit, CH4/O2/H2S
81-0153 Cylinder, 50% CH4/40% CO2/10% N2 (% gas range) (17 liter)
81-0154 Cylinder, 50% LEL CH4/25 PPM H2S/50 PPM CO/12% O2 (58 liter)

81-0155 Cylinder, 50% LEL CH4/50 PPM CO/12% O2 (103 liter)

81-1063 Regulator, demand flow (34/58/103 liter cylinders)

81-1064 Regulator, demand flow (17 liter cylinders)

64 71-6417 - REV A
 Appendix C

Innova Transformer Gas Tester (XT)

Overview
The Innova Transformer Gas Tester is factory configured to monitor for total
combustibles from the gas space of power transformers. If transformer
faults, such as overheating, hot spots, arcing or corona occur, various
combustible gases are generated. If left unchecked, gas can accumulate
creating a potential for explosion, failure of the transformer, significant
remediation costs and loss of electrical service.
The Innova Transformer Gas Tester is designed as an inspection tool to
determine if unacceptable levels of gas exist within the transformer. A
sample of gas is extracted from the headspace of the transformer by the
Innova Transformer Gas Tester with a 1:1 dilution fitting in place. If gas
levels exceed acceptable levels, additional inspection, including performing
a dissolved gas analysis, is required to determine fault condition and
appropriate action. If oxygen detection is required, an optional oxygen range
can be provided.
Detection Range
The Innova Transformer Gas Tester has two detection ranges: 0-100% LEL
and 0-10,000 ppm combustibles. An optional range of 0-30% oxygen can be
provided if requested.
The Innova Transformer Gas Tester is calibrated with 2% hydrogen (50%
LEL) in the LEL range.
Alarm Points
The alarm points for the combustibles (LEL) range are preset at 10% LEL
(WARN) and 50% LEL (ALARM). PPM combustibles alarms are set at
1000 and 5000 ppm. All alarms are completely user adjustable if alternate
alarm points are required. Refer to Chapter 4, Edit Alarms, for alarm
adjustment instructions.
The Innova Transformer Gas Tester can also be provided with an optional
oxygen channel. The oxygen channel has two user adjustable alarms, one
that activates at 19.5% decreasing oxygen and one that activates at 23.5%
increasing oxygen.

71-6417 - REV A 65
Innova Series Operator’s Manual

Dilution Fitting
The Innova Transformer Gas Tester includes a dilution fitting to provide the
necessary dilution ratio to mix one part sample with one part air.
Description
The catalytic detection method requires oxygen in order to function properly.
In an inert gas environment, it is necessary to provide oxygen by the use of a
dilution attachment on the inlet fitting to oxidize the combustible gas.
The dilution fitting consists of a small tee fitting which plugs into the inlet
fitting of the instrument. It includes two small drilled orifices. One orifice
connects to the sample source and the other to atmospheric air. These are
proportioned to give a dilution of one part air to one part of sample.
If testing for combustible gas in a inert environment is attempted without the
dilution fitting, the Innova will respond briefly as the available oxygen is
exhausted in the flow block and the combustible readings will then return to
zero, providing an incorrect reading.
For testing oxygen content in transformers, the dilution fitting can be
removed. This will allow you to determine if there is oxygen present. This
test however, can only be performed with the Innova Transformer Gas Tester
with an active oxygen channel.
Operation
Before operating the Thermo GasTech Innova Transformer Gas Tester, it is
important that you read and understand the Innova Series Operator’s Manual.
It is also extremely important that you are familiar with the specific transformer
that you are testing and know how to safely extract a gas sample.
1. Turn on the Innova Transformer Gas Tester and allow the instrument
to warm up.
2. Perform fresh air adjustment as described in Chapter 2, Start Up &
Operation.
3. Connect the probe directly to the end of the Innova Transformer Gas
Tester.
4. Open the valve on the Tedlar bag by turning the top of the valve
counter clockwise two full turns.
5. To remove excess air from the Tedlar bag, connect the tubing from the
Tedlar bag to the end of the probe allowing the internal pump to draw
the air out of the gas collection bag. When the Innova alarms and
indicates “PUMP FAILED”, turn the valve clockwise until it is
completely closed, then remove the tubing from the end of the probe.

66 71-6417 - REV A
 Appendix C

6. Press the → button to restart the pump.

7. Remove the probe and attach the dilution fitting directly to the inlet
fitting of the Innova.
8. Attach the probe to the dilution fitting.
9. Attach the Tedlar bag tubing to the gas sample port of the transformer.
10. Open the valve on the bag two full turns then fill the bag with gas
from the head space of the transformer, closing the valve when the
bag is full.
11. Remove the gas collection bag.
12. Open the valve on the collection bag and attach the bag directly to the
inlet of the probe on the Innova Transformer Gas Tester.
13. View the Innova Transformer Gas Tester display to determine the
concentration of combustible gas in the transformer.
14. Remove the gas collection bag from the probe when complete and
close valve on bag.

NOTE
When testing for oxygen content, either remove the dilution fitting
from the Innova Transformer Gas Tester or place your finger over the
small orifice on the dilution fitting before performing test.

71-6417 - REV A 67
Innova Series Operator’s Manual

Parts List
See Parts List in Appendix A for a more complete list of replacement parts
and accessories.
80-0405 Dilution fitting, 50%
81-0002 Cylinder, 2% H2 (17 liter)
81-0078 Cylinder, 100% N2 (17 liter)
81-0226-07 Cal kit, H2
81-0226-08 Cal kit, H2/N2
81-1064 Regulator, demand flow (17 liter cylinders)
81-1155 Tedlar bag w/tubing

68 71-6417 - REV A