VT MOBILE Gas Flow Analyzer

Getting Started Manual

PN 2544892
January 2006
© 2006 Fluke Biomedical. All rights reserved. Printed in USA
Specifications subject to change without notice.
Warranty

Warranty and Product Support

Fluke Biomedical warrants this instrument against defects in materials and workmanship for one full year from the date of original purchase.
During the warranty period, we will repair or, at our option, replace at no charge a product that proves to be defective, provided you return
the product, shipping prepaid, to Fluke Biomedical. This warranty does not apply if the product has been damaged by accident or misuse or
as the result of service or modification by other than Fluke Biomedical. IN NO EVENT SHALL FLUKE BIOMEDICAL BE LIABLE FOR CON-
SEQUENTIAL DAMAGES.

Only serialized products and their accessory items (those products and items bearing a distinct serial number tag) are covered under this one–year
warranty. PHYSICAL DAMAGE CAUSED BY MISUSE OR PHYSICAL ABUSE IS NOT COVERED UNDER THE WARRANTY. Items such as cables
and nonserialized modules are not covered under this warranty

Recalibration of instruments is not covered under the warranty.

This warranty gives you specific legal rights. You may also have other rights which vary from state to state, province to province, or country
to country. This warranty is limited to repairing the instrument to Fluke Biomedical’s specifications.

Warranty Disclaimer

Should you elect to have your instrument serviced and/or calibrated by someone other than Fluke Biomedical, please be advised that the original war-
ranty covering your product becomes void when the tamper-resistant Quality Seal is removed or broken without proper factory authorization. We
strongly recommend, therefore, that you send your instrument to Fluke Biomedical for factory service and calibration, especially during the original
warranty period. (When returning the product for any reason, be sure to follow the “Return Procedure” in “Standard Terms and Conditions” in the sec-
tion in the Operator’s Manual called “Notices.”)

In all cases, breaking the tamper-resistant Quality Seal should be avoided at all cost, as this seal is the key to your original instrument warranty. In the
event that the seal must be broken to gain internal access to the instrument, you must first contact Fluke Biomedical’s Technical Assistance Depart-
ment at 775-883-3400. You will be required to provide the serial number for your instrument as well as a valid reason for breaking the Quality Seal. You
should break this seal only after you have received factory authorization. Do not break the Quality Seal before you have contacted us. Following these
steps will help ensure that you will retain the original warranty on your instrument without interruption.

Manufacturing Location

The VT MOBILE is manufactured in Everett, WA, USA.

 Table of Contents

Title Page

Introduction .................................................................................................................... 1
Unpacking the VT MOBILE ............................................................................................ 1
Operation, Storage, and Maintenance............................................................................ 5
Support........................................................................................................................... 5
Controls and Indicators .................................................................................................. 5
Powering Up................................................................................................................... 10
Selecting the Operating Mode ........................................................................................ 10
Printing ........................................................................................................................... 10
Using the Keys ............................................................................................................... 11
Setting Up ...................................................................................................................... 11
Selecting the Gas Type ............................................................................................. 11
Selecting the Correction Mode .................................................................................. 11
Setting the Breath Detect Threshold.......................................................................... 12
Setting Zero Warn ON or OFF................................................................................... 12
Setting the Date and Time ......................................................................................... 13
Checking Version and Serial Numbers ...................................................................... 13
Accessing Help.......................................................................................................... 13

i
VT MOBILE
Getting Started Manual

Making a Measurement More Accurate ......................................................................... 13

Warm-up and Zeroing ............................................................................................... 13
Verifying Oxygen Sensor Calibration ........................................................................ 14
Calibrating the Oxygen Sensor ................................................................................. 14
Using the Temperature and Relative Humidity Sensor ............................................. 15
Checking the Barometric Pressure............................................................................ 15
Measuring Low Pressure ............................................................................................... 15
Measuring Low Flow ...................................................................................................... 17
Measuring High Pressure .............................................................................................. 18
Checking Ventilator Parameters .................................................................................... 20
Service........................................................................................................................... 25
Battery ........................................................................................................................... 25
Specifications................................................................................................................. 26
General Specifications .............................................................................................. 26
Measurement Specifications ..................................................................................... 27
Measurement Parameter Specifications ................................................................... 30
Symbols ......................................................................................................................... 33

ii
 List of Tables

Table Title Page

1. VT MOBILE Versions ............................................................................................................ 2

2. Standard Accessories............................................................................................................ 2
3. Available Accessories............................................................................................................ 3
4. Controls and Indicators.......................................................................................................... 7
5. Ventilator Parameters............................................................................................................ 22

iii
VT MOBILE
Getting Started Manual

iv
 Warnings (continued)

List of Figures

Figure Title Page

1. Key Available Accessories .................................................................................................... 4

2. Controls and Indicators.......................................................................................................... 6
3. Measuring Low Pressure....................................................................................................... 16
4. Low Pressure Screens .......................................................................................................... 16
5. Measuring Low Flow.............................................................................................................. 17
6. Low Flow Screens ................................................................................................................. 18
7. Measuring High Pressure ...................................................................................................... 19
8. High Pressure Screens.......................................................................................................... 20
9. Checking Ventilator Parameters............................................................................................ 21
10. Ventilator Parameter Screens ............................................................................................... 23
11. Additional Parameter Screens ............................................................................................... 24
12. Measuring Airway Pressure................................................................................................... 24
13. Changing the Battery............................................................................................................. 25

v
VT MOBILE
Getting Started Manual

vi
 WXWarning. Read before using Analyzer.
To avoid personal injury, follow these guidelines:
ƒ Do not use the VT MOBILE in any manner not specified in the Operator’s Manual. Otherwise,
the protection provided by this product may be impaired.
ƒ When measuring oxygen, always keep all components of test setup well away from open
flame or other combustion-starting devices.
ƒ Use in well-ventilated space. Be aware that a gas defined with VT for Windows software as
‘User’ may be unknown while using the VT MOBILE.
ƒ For high pressure measurements, always turn off gas source before connection or discon-
nection of VT MOBILE. Be aware that there is no pressure indication on the VT MOBILE
screen when VT for Windows software is in control.
• Always press power off on the VT MOBILE and unplug the battery eliminator before cleaning
the outer surface.
• Inspect the product, if the instrument appears damaged or appears to operate in a manner
not specified in the manual, DO NOT CONTINUE USE. Return the product for service.
• Avoid spilling liquids on the analyzer; fluid seepage into internal components creates corro-
sion and a potential shock hazard. Do not operate the instrument if internal components are
exposed to fluid.
• Do not open this product. There are no user replaceable parts.

vii
 WCaution
The VT MOBILE should be calibrated annually. Only qualified technical personnel should per-
form troubleshooting and service procedures on the VT MOBILE.
Do not expose the system to temperature extremes. Ambient operating temperatures should re-
main between 10 and 40 °C. System performance may be adversely affected if temperatures fluc-
tuate above or below this range.
Clean only with a damp, lint-free cloth, using a mild detergent, and wipe down gently.

viii
 Getting Started Manual

Introduction Unpacking the VT MOBILE

This Getting Started Manual provides basic information Referring to Table 2, unpack the Analyzer and its
on the Fluke Biomedical VT MOBILE Gas Flow Analyzer accessories from the shipping carton. Identify accessories
(hereafter referred to as the Analyzer.) Refer to the for your Analyzer with the aid of Table 3 and Figure 1.
Operators Manual provided on the CD for complete Check for missing parts. Carefully inspect the unit for
operating instructions. damage, such as cracks, dents, or bent parts. If items are
Seven language options support the available factory-set missing or any physical damage is apparent, call Fluke
versions of the Analyzer. These are identified by the Biomedical for assistance. For information on ways to
overlay language, as described in Table 1. contact Fluke Biomedical, see the section in this manual
called “Support.” Also, notify the carrier if the damage
The Analyzer is a general-purpose, portable gas flow
appears to be the result of a shipping mishap.
analyzer with special modes designed specifically for
testing mechanical patient ventilators. The Analyzer
measures bi-directional flow in both high and low ranges Maxtec oxygen sensor distributed by Fluke Biomedical.
as well as high and low pressure ranges. Not for use in
the patient environment.

1
VT MOBILE
Getting Started Manual

Table 1. VT MOBILE Versions Table 2. Standard Accessories

Language Part Item Part Number

Version
Overlay Number Accessory Kit 2131367
VT MOBILE US English 2427911 High-Flow Sensor 2438334
VT MOBILE FRA French 2553550 Low-Flow Sensor 2548422
VT MOBILE DEU German 2553561 High-Pressure Adapter (Luer to Male 2548303
VT MOBILE ITAL Italian 2553577 Nut/Nipple D.I.S.S. Oxygen)
VT MOBILE SPAN Spanish 2553589 Low-Pressure Adapter 2454175
VT MOBILE JPN Japanese 2553610 Oxygen Sensor 2448801
VT MOBILE CHI Chinese 2553605 Oxygen Sensor Cable 6 ‘ 2448051
‘T’, 15 mm ID, 22 mm ID, 15 mm ID 2457028
VT MOBILE RS232 Cable, 6’ 2075257
9 VDC Battery (Alkaline) 614487
Soft Carrying Case 2523995
Information Packet: Getting Started 2544926
Manual; Quick Reference Card; CD
with Quick Reference Card, Getting
Started Manual, Operators Manual,
VT for Windows (V2.01.00 +)

2
 Gas Flow Analyzer
Unpacking the VT MOBILE

Table 3. Available Accessories Table 3. Available Accessories (cont.)

Item Part No. Item Part No.

High-Flow Sensor 2438334 Accessory Kit for VT MOBILE 2131367
Low-Flow Sensor 2438352 CD, includes: Quick Reference Card, 2558269
High Pressure Adapter (Luer to 2548315 Operators Manual, Getting Started
Female D.I.S.S. Oxygen) Manual, VT for Windows (V2.01.00
+), other matter.
High Pressure Adapter (Luer to Male 2548303
Nut/Nipple D.I.S.S. Oxygen) Serial Communications Cable 2075257
(RS232)
Low-Pressure Adapter 2454175
DB9F to miniature RS232, 6’
Oxygen Sensor 2448801
Power Adapter, Universal (USA and 2118212
Oxygen Sensor Cable, 6’ 2448051 International)
“T”, 15mm ID end, 22mm ID end, 2457028 Soft-side Carrying Case 2523995
15mm ID end
ACCU LUNG Portable, Precision 2387318
Temperature and RH Sensor 2541622 Test Lung
Assembly

3
VT MOBILE
Getting Started Manual

High-Flow RS232 Temperature/RH

Sensor Cable Sensor

Low-Flow
Sensor Oxygen
Sensor
Low-Pressure
Adapter

ACCU LUNG

High-Pressure
Adapters

ede03f.eps

Figure 1. Key Available Accessories

4
 Gas Flow Analyzer
Operation, Storage, and Maintenance

Operation, Storage, and Maintenance Contact Fluke Biomedical in the following ways

Operate the Analyzer in a dry area within temperature Telephone: (800) 648-7952 (in the U.S.A.)
limits of 10 °C to 40 °C. The maximum operating relative Mail: Fluke Biomedical
humidity at temperatures up to 31 °C is 80 % non- 6920 Seaway Blvd.
condensing, decreasing linearly to 50 % non-condensing Everett, WA 98206
at 40 °C.
E-mail techservices@flukebiomedical.com;
Store the Analyzer at a temperature of -25 °C to 50 °C sales@flukebiomedical.com
and a non-condensing relative humidity of 0 to 95 %.
The battery is the only user-serviceable part in the
Controls and Indicators
Analyzer. For safety reasons, maintenance requiring Figure 2 illustrates the controls and indicators found on
other internal access should be performed only by an the front and sides of the Analyzer. Table 4 describes the
experienced technician. related call outs.

Support
After power-up and connection, if the new Analyzer fails
to start or operate successfully, please contact Fluke
Biomedical immediately. The Technical Assistance
Center is open between 8:00 AM and 5:00 PM, Pacific
Standard Time, Monday through Friday, except holidays.
When contacting the Technical Assistance Center, please
provide the following information: Analyzer version and
serial number, specific steps necessary to reproduce the
problem, and a phone number where you can be
contacted during the day.

5
VT MOBILE
Getting Started Manual

5
4 9
6 F1 F2

YZ
E R
7 18 Memory 10
AL
AN
OW
3 GA
S
FL

LE
BI Back ENTER Setup
MO
VT
8 11
2 F2 Me
mo
ry
VENTILATOR PARAMETERS
17 _,
@ 1 ABC 2 DEF 3
F1

Se
tup FLOW/VOL PRESSURE TIMING 12
R
TE

Ba
ck
EN
RS
3 16
TE
M E EF G
WAVEFORM SCREENS
RA D MIN GHI 4 JKL 5 MNO 6
1 T
TO
R
I L A AB C
PA 2

U RE
TI
6
13
N
VE 1
PR
E SS
E N S
O E
FLOW PRESSURE VOLUME
RE MN UM
_,@ L SC 5 L
/ VO O RM VO
OW F
FL V E KL R E 9
A
W J
4 ES
SU TS
E N YZ 2
OTHER MEASUREMENTS
PR EM WX RH O
I UR 8 % PQRS 7 TUV 8 WXYZ 9
GH OW E AS
FL
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H
M
E R TU V
ES
SU
R E
NS
15 FLOW/VOL PRESSURE %RH O2
PR TIO RE
RS L NC 0 MO
PQ / VO FU
OW IAL
EC
FL S P R
ZESOR
O S SPECIAL FUNCTIONS
N
D
SE 0
T
EN
TR EST TREND ZERO MORE 14
TEST SENSORS

ede01f.eps

Figure 2. Controls and Indicators

6
 Gas Flow Analyzer
Controls and Indicators

Table 4. Controls and Indicators

No. Name Description/Use

A Miniature RS-232 Serial Port Connect the RS-232 cable here (for use with VT for Windows
software.)

B Battery Eliminator Connector Connect the battery eliminator here. Use the battery eliminator
whenever possible.

C Battery Eliminator Indicator Glows green when the battery eliminator is supplying power to the
Analyzer. Note that this power source cannot recharge the battery.

D High Pressure Connector Connect the High Pressure Adapter here. The Analyzer makes high
pressure measurements from -2 to 100 psi.

E Flow and Low Pressure Connector Insert one of three coded modular connectors here; the Analyzer
automatically detects the connector type. The Analyzer use the
High-Flow Sensor to measure up to ± 150 lpm, the Low-Flow
Sensor to measure up to ± 25 lpm, or the Low-Pressure Adapter to
measure from -20 to 120 cmH2O.

F Display Screen Shows measurement parameters and statistics (Min, Avg, Max),
waveforms, and setup selections. English only.

G Oxygen Sensor Connector Connect the Oxygen Sensor here. The Analyzer makes O2
measurements from 0 to 100%.

H Temperature, RH Sensor Connector Connect the optional Temperature and Relative Humidity Sensor
here.

7
VT MOBILE
Getting Started Manual

Table 4. Controls and Indicators (cont.)

No. Name Description/Use

I Softkeys Use F and G to access selections identified on the screen immediately
F G above these keys.

J Memory Key Press J to save, view, or delete memory files. A memory file contains data to
reconstruct all aspects of a stored screen (reading, statistics, waveform,
J parameters, etc.)
K Help Key Press I to access context-sensitive help. If necessary, press B or C to
I scroll through additional text. Press A to return to the previous screen.

L Ventilator Parameters Keys Press K, L, or M to display ventilator measurement parameters.

K L M When text entry is required, press K successively to cycle through 1 Æ - Æ
@. Press L to cycle through A Æ B Æ C Æ 2, and press M to cycle
through D Æ E Æ F Æ 3.
M Waveform Screens Keys Press N, L, or O to display specific waveforms.
N L O For any waveform, press F (Rescale) to optimize the display or press G
(Units) to select new units of measurement. When text entry is required, press
N successively to cycle through G Æ H Æ I Æ 4. Press L to cycle
through J Æ K Æ L Æ 5, and press O to cycle through M Æ N Æ O Æ 6.

8
 Gas Flow Analyzer
Controls and Indicators

Table 4. Controls and Indicators (cont.)

No. Name Description/Use

N Other Measurements Keys Press K to access direct readings and statistics of flow and
K L P volume. Press L for readings and statistics of high or low
pressure. Repeated presses of P yield readings of O2 %,
temperature, and relative humidity. When text entry is required, press
K successively to cycle through P Æ Q Æ R Æ S Æ 7. Press L
to cycle through T Æ U Æ V Æ 8, and press P to cycle through W
Æ X Æ Y Æ Z Æ 9.
O Special Functions Keys Press Q to start new or review old trending data. Press R at
Q R S any time to initiate the zeroing procedure or, when keypad entry is
required, to enter 0. Press S to access barometric pressure and
battery readings.
P Navigation Keys Press A to exit specific screens (Setup, Memory, Help, More, etc.)
A B CD Press B or C to cycle through specific screen selections (Setup,
Memory, More, etc.) or to scroll through help text. Press D to access
system settings (Gas Type, Correction Mode, Breath Detect
Threshold, Zero Warning, Date, Time, and version numbers.)
Q Enter Key Press E to activate a menu selection.
E
R Power Key Press and briefly hold this key to power on or power off the Analyzer.
H

9
VT MOBILE
Getting Started Manual

Powering Up Selecting the Operating Mode

1. Press the Power key (H) to power on the Analyzer. Local Mode is the default setting upon powering up the
The Analyzer displays the power up screen for Analyzer. In Local Mode, select functions by pressing
several seconds. keys on the front panel.
2. The Analyzer then prompts you for the zeroing To change modes from Local to Remote, first connect the
procedure. Disconnect flow and pressure sensors serial cable to both the PC and the miniature RS-232
and place the Analyzer on a flat surface. serial port on the Analyzer. Launch VT for Windows
software (version 2.01.00 or higher) to activate Remote
W Warning Mode.
Make sure pressure is set to zero before
If VT for Windows has remote control, the following
disconnecting the High Pressure Adapter.
appears on the Analyzer display screen:
Exposure to high pressure could cause
personal injury. No Graphics Available, While Communications Are Active
3. Press G (Ok). The Analyzer now performs the Normal local key presses have no effect. Press G
zeroing procedure. After several seconds, the Tidal (Cancel) to regain local control.
Volume screen appears and the Analyzer is ready for
use. If you have pressed R to initiate the zero Printing
procedure, the Analyzer returns to the previous Print data from the Analyzer using a PC running VT for
screen displayed. Windows. This software also allows you to view all 16
Note ventilator parameters on one screen and manipulate and
graph data.
If the Analyzer encounters a power problem
(such as a backwards battery), thermal timeout
devices interrupt normal operation. Repair the
problem, wait several seconds, and resume
normal operation.

10
 Gas Flow Analyzer
Setting Up

Using the Keys Setting Up

Press each key firmly; the Analyzer responds to a Press D to access Analyzer settings. (Press G to
recognized key press with a beep. Generally, you can exit
return to the measurement screen.)
one function by selecting another function. Press the B
and C navigation keys to cycle through multiple Selecting the Gas Type
functions accessed from one key. Relevant functions for
Ensure that the gas or gas mixture you will be using is
the two softkeys (F and G) are identified in the
selected, as the gas density will be different for each gas
display immediately above these keys. When text entry is
type and mixture.
necessary, quickly press a key to cycle through the
characters it accesses. Pause to accept the present Select the gas type by pressing D Æ E Æ E Æ
character and move to the next entry. Think of text entry B or C Æ E. Available selections are: Air, O2,
as text messaging, as you would encounter on a cell Heliox, CO2, N2, N2O, N2O/O2 (N2O balance O2),
phone. He/O2 (He balance O2), N2/O2 (N2 balance O2), and
User. A ‘User’ gas can only be defined with the VT for
Note Windows software.
If the Zero warning screen appears at any time,
Selecting the Correction Mode
follow on-screen directions and then press G;
the interrupted function will continue Ensure that the correction mode setting matches the one
automatically after the zeroing procedure. used by the ventilator or anesthesia machine
manufacturer for their display of flow and volume
WWarning measurements. If the correction mode is unknown, select
Make sure pressure is set to zero before “ATP” (Ambient Temperature and Pressure).
disconnecting the High Pressure Adapter.
Exposure to high pressure could cause The Analyzer can operate with a correction mode of ATP,
personal injury. STPD21, BTPS, or STPD0. Select the mode by pressing D
Æ E Æ C (to ‘Corr Mode’) Æ E Æ C (to
select mode) Æ E.

11
VT MOBILE
Getting Started Manual

Setting the Breath Detect Threshold Setting Zero Warn ON or OFF

The default setting of 2.00 lpm is usually appropriate for The Analyzer Zero Warn is set to ON at the factory to
the ventilators and anesthesia machines being tested. remind you to zero out any offset in the Flow
This setting tells the Analyzer how to divide the delivered measurements. The Zero Warn screen reminds you at
flow into breaths. If necessary, adjust the Breath Detect power on, after the first five minutes, and then after each
Threshold up or down until the breath rate reported on the 30-minute period. After the power-on zero warning, you
Analyzer Timing display matches the ventilator breath can choose to Zero or Cancel when the reminder
rate. appears; either action returns the Analyzer to the same
function.
Set the threshold by pressing D Æ E Æ C (to ‘BD
WWarning
Thresh’) Æ E Æ C or B (to change threshold
in increments of 0.25) Æ E. You can also use keypad Setting Zero Warn to OFF may introduce
entry to directly enter a new value prior to the last offset into the Flow and Volume
E press. measurements and cause errors in the
assessment of those measurements against
the medical device under test specification.
Fluke Biomedical strongly recommends that
you leave Zero Warn ON.
Turn this warning on or off by pressing D Æ E Æ
C (to ‘Zero Warn’ Æ E Æ C (to select ON or
OFF) Æ E.

12
 Gas Flow Analyzer
Making a Measurement More Accurate

Setting the Date and Time Making a Measurement More Accurate

Press D Æ C Æ E Æ E to access the date Warm-up and Zeroing
setting screen. Using the text entry keys, enter the new
The Analyzer requires a warm-up period. A five-minute
date as mm/dd/yy or dd/mm/yy. Then press E to
warm-up followed by a zero and immediate measurement
accept the change.
is adequate for most applications. A 40-minute warm-up
At this point, press C Æ E to access the time ensures maximum accuracy and stability.
setting screen. Then use the text entry keys and the The Zero Warn feature reminds you to zero the
softkeys to enter the time, followed by a press of E. transducers at predefined intervals. Fluke Biomedical
strongly recommends that you leave Zero Warn ON and,
Checking Version and Serial Numbers
after removing pressure and flow sources, zero the
Press D Æ C Æ C Æ E to check the version transducers whenever the Zero Warn message appears.
and serial numbers.
The Analyzer requires you to zero immediately after
Accessing Help power on. If Zero Warn is ON, the Analyzer prompts you
Use the I key to access context-sensitive help. If for an optional zero after the first five minutes and then
additional text is available off screen, a vertical bar after each subsequent 30-minute interval. To zero at the
appears on the right side of the help screen. Use B or prompt, place the Analyzer on a flat surface with sensors
C to scroll through the complete text. Press G to disconnected at the Analyzer. Then press G.
exit help. Press R at any time to initiate an unprompted zero.
Generally, it is appropriate to zero before any pressure or
flow measurement.

13
VT MOBILE
Getting Started Manual

Verifying Oxygen Sensor Calibration Calibrating the Oxygen Sensor

Verify the oxygen sensor calibration at the beginning of Calibrating the Oxygen Sensor improves pressure
any day during which you expect to measure oxygen compensation for barometric and airway pressure
concentrations. Use the following verification procedure: changes.
1. Connect the Oxygen Sensor as shown in Figure 9. 1. Press P to display the Oxygen measurement
2. Introduce a 10 lpm or greater flow of 100% oxygen screen.
through the Oxygen Sensor “T”. 2. Press G to access the Oxygen calibration screen.

3. Press P to access the O2 display. 3. Connect the High-Flow Sensor and then apply dry air
(20.9 % oxygen) at 10 lpm to either side of the
4. Ensure that the O2 screen oxygen concentration is sensor.
100 % ± 2 % of full scale. If the concentration is less
than 98 %, perform the oxygen sensor calibration as 4. Press F twice to access the Calibration screen.
described below. Wait for the two-minute timer to count down.

Replace the oxygen sensor after one year (or longer if no 5. Apply 100 % oxygen at 10 lpm.
replacement message appears during calibration.) 6. Press G twice and then press F once to access
the Calibration screen.
Note
7. After the two-minute interval, the Oxygen
The Oxygen Sensor is not calibrated at the
measurement screen appears and the calibration is
factory.
complete.

14
 Gas Flow Analyzer
Measuring Low Pressure

Using the Temperature and Relative Humidity Measuring Low Pressure

Sensor Measure low pressure in the range: -20 to 120 cmH2O.
Use the optional Temperature and Relative Humidity Never exceed an absolute maximum of 5 psi.
Sensor to compensate for the conditions of the gas under Refer to Figure while following these steps:
test.
1. Press R and follow on-screen instructions.
Checking the Barometric Pressure 2. At the Analyzer, connect the Low-Pressure Adapter
An internal sensor measures barometric pressure. The to the Flow/Low-Pressure Port.
Analyzer displays pressure relative to barometric 3. Press L in the OTHER MEASUREMENTS or
pressure (gauge pressure). Press S Æ E to WAVEFORM SCREENS section.
check the barometric pressure reading.
4. Verify that the screen displays Low Pressure (Plo) or
To set a different barometric pressure, you can press LPress. If the High Pressure Adapter is also
F and then enter that value with the text entry keys. connected, you may need to press L a second
time.
Note
5. Connect the Low-Pressure Adapter to the source.
The Analyzer relies on ambient barometric
pressure. Do not set for airport barometric 6. Apply pressure.
pressure, which is corrected for altitude. 7. Successively press G (Units) to select a pressure
unit in the sequence: PSI Æ kPa Æ Bar Æ mBar Æ
ATM Æ inH2O Æ InHg Æ cmH2O Æ mmHg.
If the waveform is too small or too large, press F
(Rescale) to view the waveform within optimized limits.

15
VT MOBILE
Getting Started Manual

Figure 4 shows some characteristic low pressure

screens.

OTHER
MEASUREMENTS

Low
Pressure
Adapter
OW
AN
AL
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ER
WAVEFORM
FL
S

MO
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GA
SCREENS
VT

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Ba RS
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PA 2 TIM
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ES
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S 5

RE
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L

T
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S
9 Figure 4. Low Pressure Screens
PR ME XY O2
U RE 8 W %RH
I
GH OW AS
ME
FL R E
HE TUV SUR
OT 7 E S N S
PR TIO RE
RS L NC 0 MO
PQ /VO FU
OW IAL
FL EC RO S
SP ZESOR
N
SE
D
EN
TR EST
T

ede08f.eps
Figure 3. Measuring Low Pressure

16
 Gas Flow Analyzer
Measuring Low Flow

Measuring Low Flow Low Flow

Measure low flow in the range: +/- 25 lpm. Never exceed Sensor
an absolute maximum of 35 lpm.
Refer to Figure 5 while following these steps:
1. Press R and follow on-screen instructions.
2. At the Analyzer, connect the Low-Flow Sensor to the
Flow/Low-Pressure Port.
3. Press K (in OTHER MEASUREMENTS) or N
(in WAVEFORM SCREENS.)
4. Connect the Low-Flow Sensor to the source.
R
ZE
ALY
AN

5. Apply flow. O BIL

E
GA
S
FLO
W

V TM

6. Successively press G (Units) to select a flow unit

in the sequence: LPM Æ CFM Æ LPS Æ ml/min Æ
ory
F2 Mem

F1
tup

ml/sec. ck
EN
TE
R
Se

3
Ba RS
TE
M E EF G
RA D IN

If the waveform is too small or too large, press F

PA 2 TIM
R
TO
ILA C
B RE 6
NT A SU S
VE 1 ES EN O E
PR E
R MN U M
_,@ SC 5 L
/VOL RM VO

(Rescale) to view the waveform within optimized limits. FL

OW

I
GH OW
VE L
4
FO
WA JK SSU
PR
E

AS
RE

U
T
N Z
M E XY
RE 8 W %RH
S
9

O2

ME
FL R E
HE TUV SUR
OT 7 ES NS
PR T IO
RE
RS L NC 0 MO
PQ /VO FU
OW IAL
FL EC RO S
SP ZESOR
N
SE
D
EN
TR EST
T

ede13f.eps
Figure 5. Measuring Low Flow

17
VT MOBILE
Getting Started Manual

Figure 6 shows some characteristic low flow screens. Measuring High Pressure
The Analyzer can measure high pressure from -2 to 100
OTHER psi. Be certain of your possible source pressure before
MEASUREMENTS measuring high pressure. For example, normal bulkhead
outlet pressure could be too high. Unregulated cylinder
pressure could also be too high.
Refer to Figure while following these steps:
1. Press R and follow on-screen instructions.
WAVEFORM 2. At the Analyzer, connect the High-Pressure Adapter
SCREENS to the High-Pressure Port.
3. Press L in the OTHER MEASUREMENTS or
WAVEFORM SCREENS section.
4. Verify that the screen displays High Pressure (Phi) or
ede15f.eps HPress. If the Low-Pressure Adapter is also
Figure 6. Low Flow Screens connected, you may need to press L a second
time.
5. With the high pressure source set to zero output,
connect the High-Pressure Adapter to the source.
Note that various connection schemes are available.
6. Apply pressure.
7. Successively press G (Units) to select a pressure
unit in the sequence: PSI Æ kPa Æ Bar Æ mBar Æ
ATM Æ inH2O Æ InHg Æ cmH2O Æ mmHg.

18
 Gas Flow Analyzer
Measuring High Pressure

ER
YZ
AL
AN
OW
FL
GAS
E
BIL
MO
VT

ory
F2 Mem

F1
tup
Se
R
TE
EN
ck 3
Ba S
ER
ET F G
RAM DE IN
PA 2 TIM
R
ER TO
LA C RE 6

L YZ NTI AB
VE
1 ES
SU
NS E
ANA _,@ L
PR
M
REE MNO UM
SC 5
VO
L
/VO OR
OW FL
OW
AV
EF L
RE 9
FL W JK
4 ES
SU TS
EN XYZ
S PR
REM8 W %RH
O2
GA GHI OW
MEA
SU

LE
FL ER TUV RE

BI
OTH7 ES
SU
NS
PR IO
RE
MO
N CT O
RS L 0 M
PQ /VO FU
OW IAL
VT FL EC RO S
SP ZESOR
N
SE
D
EN
TR ST
TE

ry
mo
F2 Me

F1
tup
Se
R
TE
EN
Ba
ck
TE
RS
3
High Pressure
ME EF G
RA D
TO
R
PA 2 TIM
IN
Adapter
ILA C
B RE 6
NT A SU S
VE 1 ES EN O E
PR RE MN UM
_,@ SC 5
VOL
R M V OL
/ FO
OW VE L RE 9
FL
WA JK SSU TS Z
4 E N
E Y 2
PR EM WX RH O
I UR 8 %
GH OW E AS
M
FL R E
HE TUV SUR
OT 7 E S N S
PR TIO RE
RS L NC 0 MO
PQ / VO FU
OW IAL
FL EC RO S
SP ZESOR
N
SE
D
EN
TR EST
T

ede11f.eps

Figure 7. Measuring High Pressure

19
VT MOBILE
Getting Started Manual

For waveform pressure readings, press F (Rescale) to Checking Ventilator Parameters

optimize waveform viewing.
Refer to Figure 9 when you are connecting the Analyzer
WWarning to a ventilator and test lung.
Always turn pressure off at the source prior 1. Press R and follow on-screen instructions.
to disconnecting either end of the High-
2. At the Analyzer, connect the High-Flow Sensor to the
Pressure Adapter. Serious injury could
Flow/Low-Pressure Port.
otherwise result.
3. Connect the Oxygen Sensor to the upper port on the
Figure 0-8 shows some characteristic high pressure right side of the Analyzer.
screens.
4. If available, connect the optional Temperature/RH
OTHER Sensor to the lower port on the right side of the
MEASUREMENTS Analyzer.
5. Using parts from the Accessory Kit and the
connectors provided with the sensors, make
connections between the ventilator and the
ACCU LUNG as shown in Figure 9. Use the
sequence: ventilator Y connector Æ High-Flow
WAVEFORM Sensor (blue stripe toward the ACCU LUNG) Æ
SCREENS Temperature/RH Sensor Æ Oxygen Sensor Æ
ACCU LUNG. Vertically align all sensors.
6. Set up the ventilator for a characteristic breath
pattern. For example, you could set 10 BPM at 7.5
lpm.
ede04f.eps
Figure 8. High Pressure Screens 7. Set the ACCU LUNG for C20 compliance (both outer
springs engaged) and Rp50 resistance (positioned as
shown in Figure 9.)

20
 Gas Flow Analyzer
Checking Ventilator Parameters

High Flow Sensor To Ventilator

Oxygen
Sensor

Temp./RH Sensor

Fluke Biomedical
Acculung

ede06f.eps
Figure 9. Checking Ventilator Parameters

21
VT MOBILE
Getting Started Manual

8. Apply power to all elements of the test setup. For the Table 5. Ventilator Parameters
Analyzer, press H on, wait for the Zeroing screen,
and then press G. The Analyzer is ready to use Keys Item Name
once the Tidal Volume screen appears. K VT Tidal Volume

9. Press the access keys shown in Table 5 to display MV Minute Volume

the various ventilator parameters. Once you have G PIF Peak Inspiratory Flow
pressed the first key, you can continue pressing that PEF Peak Expiratory Flow
key to view other parameters or press G to view
L PIP Peak Inspiratory Pressure
all the parameters.
PEEP Positive End-Expiratory Pressure
As described in Table 5, the Analyzer calculates 16
G MAP Mean Airway Pressure
breath parameters in Local Mode. Note that all 16
parameters and other information can be viewed on one IPP Inspiratory Pause Pressure
screen in Remote mode when using the VT for Windows M Rate Breath Rate
software. Ti Inspiratory Time
Figure 10 shows some characteristic ventilator parameter G Te Expiratory Time
screens.
I:E Inspiratory to Expiratory Time Ratio
Figure 11 shows additional oxygen, temperature, relative O2 Oxygen Percentage
P
humidity, and barometric pressure parameter screens.
Æ P Temp Temperature (gas under test)
Figure 12 shows additional airway pressure measurement
screens accessible during the ventilator check. Æ P RH Relative Humidity (gas under test)

S E Baro Barometric Pressure

22
 Gas Flow Analyzer
Checking Ventilator Parameters

All

All

All

ede07f.eps

Figure 10. Ventilator Parameter Screens

23
VT MOBILE
Getting Started Manual

OTHER
MEASUREMENTS

WAVEFORM
SCREENS

ede05f.eps
Figure 12. Measuring Airway Pressure

ede12f.eps

Figure 11. Additional Parameter Screens

24
 Gas Flow Analyzer
Battery

Service
Have a qualified technician calibrate the Analyzer once a
1 2
year. We recommend that you send the Analyzer to a
Fluke service center for calibration or service.
Battery
The Analyzer uses a 9-volt, non-rechargeable alkaline
battery. Refer to Figure 13 for battery replacement
instructions.
If battery voltage drops too low, the message “Warning
Your Battery Is Low” appears on the screen. Press G
(Ok) to resume viewing the previous display. The
Analyzer will now occasionally beep and eventually
display the warning screen again, allowing you to repeat
the process. However, to maintain accurate
measurements, replace the battery as soon as possible
ede09f.eps
after the first warning you notice.
Figure 13. Changing the Battery
Press S Æ C Æ E to check the battery level.

25
VT MOBILE
Getting Started Manual

Specifications
General Specifications
Size: 8 L x 1.5 H x 4 W inches Battery Power Supply
(20 L x 3.8 H x 10 W cm)
Voltage: 9 VDC
Weight: 1 lb (0.45 kg)
Temperature: Operating: 10 to 40 °C Power Consumption: < 70 mA
(50 to 104 °F) Battery Life: > 7 hours
Storage: -25 to 50 °C
(-13 to 122 °F) External Power Supply
Maximum 80 % relative humidity up to 31 °C (88 Output Voltage: 12 – 15 V
Humidity, °F), decreasing linearly to 50 %
Operating: Output Current: 1.2 A
relative humidity at 40 °C (104 °F).
Maximum
Humidity, 95 %
Storage:
Barometric: 7 to 18 psia, operating; -1000 to
10000 ft (787.9 – 522.7 mmHg),
storage

26
 Gas Flow Analyzer
Specifications

Measurement Specifications
Low-Pressure Port High-Pressure Port
Maximum Applied Maximum Applied
Pressure: 5 psi Pressure: 125 psi
Operating Pressure Operating Pressure: - 2 psi to 100 psi
(Differential): -20 to 120 cmH2O
Span Accuracy: ± 2 % of reading or ± 0.2
Operating Pressure psig, whichever is greater
(Common Mode): NA
Frequency
Span Accuracy: ± 2 % of reading or 1.5 Response: > 10 Hz
mmHg, whichever is
Resolution: 0.1 psi
greater
Frequency Response: Sample Rate: 100 Hz
> 10 Hz
Resolution: Fittings: Single port, Luer lock,
0.1 mmHg
stainless steel
Sample Rate: 100 Hz Note: No fluid may be applied to port.
Fittings: Flow Connector with 2
tubes "T" connected to a
single fitting
Note: No fluid may be applied to port.

27
VT MOBILE
Getting Started Manual

Airway Pressure High-Flow Port

Maximum Applied Maximum Flow Rate
Pressure: 5 psi (absolute value): 200 lpm
Operating Flow Range:
Operating Pressure: - 20 cmH2O to 120 cmH2O ± 150 lpm
Span Accuracy: ± 2 % of reading or ± 2.0 Accuracy: ± 3 % of reading or ± 2 %
of range, whichever is
cmH2O, whichever is greater
greater
Frequency Floor for Absolute
> 25 Hz or t10-90 < 40 ms
Response: Accuracy: 25 lpm
Resolution: 0.1 cmH2O Resolution: 0.01 lpm
Frequency Response: > 25 Hz or t10-90 < 40 ms
Sample Rate: 100 Hz
Sample Rate: 100 Hz
Fittings: Internally connected to flow Dynamic Resistance: < 2 cmH2O @ 60 lpm
sensor pressure lines Low-Flow Dropout: 2.5 lpm
Breath-Detect
Threshold: 4 lpm
Volume Range: > ± 60 l
Tidal Volume Accuracy: ± 3 % or reading or ± 20
ml, whichever is greater

28
 Gas Flow Analyzer
Specifications

Maximum Flow Rate Oxygen Measurement

(absolute value): 35 lpm Range: 0 to 100 %
Operating Flow Accuracy: ± 2 % full-scale output
Range: ± 25 lpm
Resolution: 0.1 % O2
Accuracy: ± 3 % of reading or ± 1% of
range, whichever is greater Frequency
Response: > 15 s (t10-90)
Floor for Absolute
3 lpm Sample Rate: 100 Hz
Accuracy:
Resolution: 0.01 lpm flow > 1 lpm Sensor
Technology: Galvanic Fuel Cell
Freq. Response: > 25 Hz or t10-90 < 40 ms
Calibration: Allows user calibration using air
Sample Rate: 100 Hz and 100 % O2
Dynamic Notes:
Resistance: < 2.5 cmH2O @ 5 lpm • Automatic partial pressure compensation for
Low-Flow Dropout: 0.24 lpm barometric and airway pressure changes
Breath-Detect • Recommended interval for changing oxygen sensor is
Threshold: 1 lpm (user selectable) one year. However, sensor may last longer. During user
Volume Range: ± 60 l calibration of the sensor, the Analyzer can detect if the
sensor needs to be replaced.
Volume Accuracy: ± 3 % of reading or ± 5 ml

29
VT MOBILE
Getting Started Manual

Barometric Pressure Measurement Measurement Parameter Specifications

Range: 8 to 18 psia (400 to 900 mmHg)
Inspiratory and Expiratory Tidal Volume (VT)
Accuracy: ± 2 % of reading
Resolution: 0.1 ml
Resolution: 0.1 mmHg
Range: > 10 l
Frequency
Response: < 5 s (t10-90) Accuracy: ±3%
Sample Rate: N/A
Calibration: Not required; however, device
allows user calibration of offset.
Expiratory Minute Volume (MV)
Resolution: 0.001 lpm
Range: 0 to 60 l
Temperature and Relative Humidity Accuracy: ±3%

Temperature Relative
Humidity
Breath Rate (BPM)
Resolution: 0.1 ° 0.1 % Resolution: 0.1 bpm
Range: 0 – 50 °C 10 to 95 % Range: 2 to 150 bpm
Accuracy: ± 1 °C ± 10 % RH Accuracy: ±1%
Units: °C, °F, °K %

30
 Gas Flow Analyzer
Specifications

Inspiratory, Expiratory Time Mean Airway Pressure (MAP)

Resolution: 0.01 s Resolution: 0.1 cmH2O
Range: 0.25 to 9.99 s Range: ± 80 cmH2O
Accuracy: ± 2 % or 0.1 s Accuracy: ± 3 % or 1 cmH2O

Peak Inspiratory Pressure (PIP) Positive-End Expiratory Pressure (PEEP)

Resolution: 0.1 cmH2O Resolution: 0.1 cmH2O
Range: ± 120 cmH2O Range: - 5 to 40 cmH2O
Accuracy: ± 3 % or 2 cmH2O Accuracy: ± 3 % or 1 cmH2O

Inspiratory Pause Pressure (IPP) Peak Expiratory Flow (PEF)

Resolution: 0.1 cmH2O Resolution: 0.01 lpm
Range: ± 120 cmH2O Range: 0 to 150 lpm
Accuracy: ± 3 % or 2 cmH2O Accuracy: ± 3 % or 1 lpm

31
VT MOBILE
Getting Started Manual

Peak Inspiratory Flow (PIF) Display Screen

Resolution: 0.01 lpm 64 x 128 pixels, reflective LCD, blue on yellow
Range: 0 to 150 lpm Operational Modes
Accuracy: ± 3 % or 2 lpm
Standalone
Controlled by VT for Windows PC Software (version
Inspiratory Time (Ti) 2.01.00 or higher)
Resolution: 0.01 s Gas Types
Range: 0 to 60 s Air, O2, Heliox, CO2, N2, N2O, N2O bal O2, He bal O2, N2 bal
Accuracy: 0.5 % or 0.02 s O2 User
Serial Communications Specifications
4-pin miniature RS-232 serial port located on upper-left
Expiratory Time (Te) side of panel
Resolution: 0.01 s
RS232 compatible with the VT for Windows software
Range: 0 to 90 s application (version 2.01.00 or higher.)
Accuracy: 0.5 % or 0.01 s

32
 Gas Flow Analyzer
Symbols

Symbols Symbol Description

Symbol Description
f Pressure Port
W See Operators Manual.
Temperature and Relative Humidity
Manufacturer’s declaration of Port
P product compliance with applicable
EU directives
Oxygen Sensor Port
) CSA Listing mark
" Battery Eliminator Port
" Battery Eliminator input Miniature RS232 Port
12V DC F '
Do not mix with solid waste stream.
~ Dispose of using a qualified recycler
or hazardous material handler.

M 9V NEDA 1604A 9-volt battery

6F22 006P

‚ Flow Port

33
VT MOBILE
Getting Started Manual

34