Operating manual

ba52300e

Handheld meter
Cond 315i

53
Tref25
25
0 S/cm
0
nLF

°C
TP

M AR

CAL O

AR

Conductivity measuring instrument

ba52300e02 03/2004

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 Accuracy when The use of advanced technology and the high quality standard of our
going to press instruments are the result of continuous development. This may result
in differences between this operating manual and your instrument. Al-
so, we cannot guarantee that there are absolutely no errors in this man-
ual. Therefore, we are sure you will understand that we cannot accept
any legal claims resulting from the data, figures or descriptions.

Warranty We guarantee the instrument described for 3 years from the date of
purchase.
The instrument warranty covers manufacturing faults that are discov-
ered within the warranty period. The warranty does not cover compo-
nents that are replaced during maintenance work, e.g. batteries.

The warranty claim extends to restoring the instrument to readiness for

use but not, however, to any further claim for damages. Improper han-
dling or unauthorized opening of the instrument invalidates any warran-
ty claim.

To ascertain the warranty liability, return the instrument and proof of

purchase together with the date of purchase freight paid or prepaid.

Copyright © Weilheim 2004, WTW GmbH

Reproduction in whole - or even in part - is prohibited without the ex-
press written permission of WTW GmbH, Weilheim.
Printed in Germany.

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 Cond 315i List of contents

Contents

1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 SETs of equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4 Jack field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Authorized use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 10

3 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 Switching on the measuring instrument . . . . . . . . . . . . . 13
4.2 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2.1 General information . . . . . . . . . . . . . . . . . . . . . . 13
4.2.2 Conductivity / Specific resistance . . . . . . . . . . . 14
4.2.3 Salinity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.3 Cell constant / Temperature compensation . . . . . . . . . . 17
4.3.1 Setting the cell constant C . . . . . . . . . . . . . . . . 17
4.3.2 Switching the temperature compensation (TC) on/
off 18
4.4 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.5 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

5 Maintenance, cleaning, disposal . . . . . . . . . . . . . . . . . 25

5.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

7 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

8 Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

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 List of contents Cond 315i

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 Cond 315i Overview

1 Overview
The compact precision Cond 315i handheld meter enables you to carry
out conductivity measurements rapidly and reliably.
The Cond 315i handheld meter provides the maximum degree of op-
erating comfort, reliability and measuring certainty for all applications.

The proven procedure for adjusting the cell constant and the special
AutoRead function support you in your work with the conductivity mea-
suring instrument.

53
Tref25
25
0 S/cm
nLF
0 °C
2
TP

M AR

CAL O

AR 1

1 Keypad
2 Display
3 Jack field

Note
If you need further information or application notes, you can obtain the
following material from WTW:
l Application reports
l Primers
l Safety datasheets.

You will find information on available literature in the WTW catalog or

via the Internet.

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 Overview Cond 315i

1.1 SETs of equipment

The measuring instrument is also available as part of individual SETs
of equipment.
You will find additional information on this and other accessories in the
WTW catalog or via the Internet.

Set (sample configuration):

1 Measuring instrument, Cond 315i

2 Stand
3 – 50 ml control standard for conductivity measuring cells
– Beaker, 50 ml
4 Conductivity measuring cell

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 Cond 315i Overview

1.2 Keypad

CAL AR

RUN/ENTER

Key functions Select the measuring mode <M>:

M
– Conductivity/Specific resistance
– Salinity
Switch measuring instrument on/off
<ON/OFF>

– Determine or set up the cell

CAL
constant
– Select temperature compensation
<CAL>
Activate/deactivate the AutoRead
AR
function
<AR>
Confirm entries,
RUN/ENTER
start AutoRead
<RUN/ENTER>

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 Overview Cond 315i

1.3 Display

Status display

TDS UpH O Sal

mV/pH Sensor symbol
S % mg/l

1888
Time Baud
mS/cm
mbarM cm
1/ cmSal
Meas. value display

8 8 .8 °F° % /K TP
C Function and
Day.Month No.
Year Ident

Tref25 Tref20 AutoCal DIN Auto Store

temperature display
LoBat nLF Lin Cal AutoCal TEC ARng AR RCL

1.4 Jack field

1 Conductivity measuring cell

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 Cond 315i Safety

2 Safety
This operating manual contains basic instructions that you must follow
during the commissioning, operation and maintenance of the measur-
ing instrument. Consequently, all responsible personnel must read this
operating manual carefully before working with the measuring system.
The operating manual must always be available within the vicinity of the
measuring system.

Target group The measuring instrument was developed for work in the field and in
the laboratory.
We assume that, as a result of their professional training and experi-
ence, the operators will know the necessary safety precautions to take
when handling chemicals.

Symbols
used

Warning
indicates instructions that must be followed to prevent damage to your
instrument.

Note
indicates notes that draw your attention to special features.

Note
indicates cross-references to other documents, e.g. application re-
ports, operating manuals of probes, etc.

2.1 Authorized use

The authorized use of the measuring instrument consists exclusively of
the measurement of the conductivity and salinity in the field and labo-
ratory.
The technical specifications as given in chapter 7 TECHNICAL DATA must
be observed. Only the operation and running of the measuring instru-
ment according to the instructions given in this operating manual is au-
thorized.
Any other use is considered to be unauthorized.

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 Safety Cond 315i

2.2 General safety instructions

This instrument is built and inspected according to the relevant guide-
lines and norms for electronic measuring instruments (see chapter 7
TECHNICAL DATA).
It left the factory in a safe and secure technical condition.

Function and operating The smooth functioning and operational safety of the measuring instru-
safety ment can only be guaranteed if the generally applicable safety mea-
sures and the specific safety instructions in this operating manual are
followed during operation.

The smooth functioning and operational safety of the measuring instru-

ment can only be guaranteed under the environmental conditions that
are in specified in chapter 7 TECHNICAL DATA.

If the instrument was transported from a cold environment to a warm

environment, the formation of condensate can lead to the faulty func-
tioning of the instrument. In this event, wait until the temperature of the
instrument reaches room temperature before putting the instrument
back into operation.

Safe operation If safe operation is no longer possible, the instrument must be taken out
of service and secured against inadvertent operation!
Safe operation is no longer possible if the measuring instrument:
l has been damaged in transport
l has been stored under adverse conditions for a lengthy period of
time
l is visibly damaged
l no longer operates as described in this manual.

If you are in any doubt, please contact the supplier of the instrument.

Obligations of The purchaser of the measuring instrument must ensure that the fol-
the purchaser lowing laws and guidelines are observed when using dangerous sub-
stances:
l EEC directives for protective labor legislation
l National protective labor legislation
l Safety regulations
l Safety datasheets of the chemical manufacturers.

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 Cond 315i Commissioning

3 Commissioning
Scope of delivery l Handheld meter, Cond 315i
l Operating manual and short operating manual
l 4 batteries, 1.5 V Mignon type AA (in the instrument)

For details of scope of delivery of SETs, see chapter 1.1 SETS OF

EQUIPMENT and WTW catalog.

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 Commissioning Cond 315i

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 Cond 315i Operation

4 Operation
4.1 Switching on the measuring instrument

1 Connect a conductivity measuring cell to the measuring instru-

ment.
2 Press the <ON/OFF> key.
Display test appears briefly on the display. Subsequently, the
selected cell constants and the temperature compensation that
was set up appear for approx. one second one after the other.
The measuring instrument then switches to the measuring
mode that was last selected.

4.2 Measuring

4.2.1 General information

Preparatory activities Perform the following preparatory activities when you want to measure:

1 Connect a conductivity measuring cell to the measuring instru-

ment.
2 Set up the correct cell constant for the conductivity measuring
cell (see section 4.3.1).
3 Use <M> to change between the conductivity measuring mode
( in µS/cm) or salinity (SAL).

Temperature probe Only carry out measurements with a temperature probe. The tempera-
ture probe is shown on the display by TP.
The WTW TetraCon325 conductivity measuring cell has a temperature
sensor integrated in it.

Note
The conductivity measuring instrument automatically recognizes the
type of the temperature probe used. This enables the measuring cells
to be connected with the NTC30 or Pt1000.

Temperature The instrument has a nonlinear temperature compensation that can be

compensation switched off (see section 4.3 CELL CONSTANT / TEMPERATURE COMPEN-
SATION).

Reference temperature, The reference temperature (Tref) can be switched between 20 °C and
Tref 25 °C. It appears on the display as Tref20 or Tref25. To switch over the
reference temperature, see section 4.4 CONFIGURATION.

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 Operation Cond 315i

4.2.2 Conductivity / Specific resistance

Note
You can display measured values in the units µS/cm (conductivity) or
MΩcm (specific resistance). This basic setting is described in section
4.4 CONFIGURATION.

Thus, you can carry out conductivity measurements or measurements

of the specific resistance:

1 Perform the preparatory activities according to section 4.2.1.

2 Immerse the conductivity measuring cell in the test sample.
3 Press the <M> key until appears on the status display. De-
pending on the basic setting in the CONFIGURATION menu, one
of the following display indicators appears on the display:

Conductivity µS/cm TDS UpH O Sal

mV/pH
S % mg/l

1530
Time Baud
m S/cm
mbarM cm
1/ cmSal
8250 °F° % /K TP
C
Day.Month No.
Year Ident

Tref25 Tref20 AutoCal DIN Auto Store

LoBat nLF Lin Cal AutoCal TEC ARng AR RCL

Specific resistance TDS UpH O Sal

MΩ⋅cm mV/pH
S % mg/l

1886
Time Baud
m S/cm
mbarM cm
1/ cmSal
8250 °F° % /K TP
C
Day.Month No.
Year Ident

Tref25 Tref20 AutoCal DIN Auto Store

LoBat nLF Lin Cal AutoCal TEC ARng AR RCL

4 Wait for a stable measured value.

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 Cond 315i Operation

4.2.3 Salinity
You can carry out the salinity measurements as follows:

1 Perform the preparatory activities according to section 4.2.1.

2 Immerse the conductivity measuring cell in the test sample.
3 Press the <M> key until Sal appears on the status display. The
salinity value appears on the display.

TDS UpH O Sal

mV/pH
S % mg/l

1323
Time Baud
m S/cm
mbarM cm
1/ cmSal
8212 °F° % /K TP
C
Day.Month No.
Year Ident

Tref25 Tref20 AutoCal DIN Auto Store

LoBat nLF Lin Cal AutoCal TEC ARng AR RCL

4 Wait for a stable measured value.

AutoRead AR The AutoRead function (drift control) checks the stability of the mea-
(Drift control) surement signal. The stability has a considerable effect on the repro-
ducibility of the measured value.

1 Select the required measuring mode with <M>.

2 Activate the AutoRead function with <AR>.
The current measured value is frozen (hold function).
3 Start AutoRead with <RUN/ENTER>.
AR flashes until a stable measured value is reached.

TDS UpH O Sal

mV/pH
S % mg/l

1530
Time Baud
m S/cm
mbarM cm
1/ cmSal
8250 °F° % /K TP
C
Day.Month No.
Year Ident

Tref25 Tref20 AutoCal DIN Auto Store

LoBat nLF Lin Cal AutoCal TEC ARng AR RCL

15

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 Operation Cond 315i

4 If necessary, start the next AutoRead measurement with

<RUN/ENTER>.
5 To terminate AutoRead: Press the <AR> key.

Note
The current AutoRead measurement can be terminated at any time
(accepting the current value) by pressing <RUN/ENTER>.

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 Cond 315i Operation

4.3 Cell constant / Temperature compensation

You can adjust the cell constant and switch the temperature compen-
sation on/off.

4.3.1 Setting the cell constant C

The cell constant of the conductivity measuring cell can be set to one
of the following values:
l 0.475 cm-1
l 0.100 cm-1
l 0.875 cm-1

Note
The cell constant to be selected must either be taken from the operating
manual of the measuring cell or is printed on the measuring cell.

Setting You can select a cell constant from the fixed values
the cell constant 0.475 cm-1, 0.1 cm-1, 0.875 cm-1 :

1 Press the <CAL> key repeatedly until the status display

CELL appears.

TDS UpH O Sal

mV/pH
S % mg/l

18L F
Time Baud
m S/cm
mbarM cm
1/ cmSal
CELL °F° % /K TP
C
Day.Month No.
Year Ident

Tref25 Tref20 AutoCal DIN Auto Store

LoBat nLF Lin Cal AutoCal TEC ARng AR RCL

2 Press the <RUN/ENTER> key.

3 Press the <CAL> key repeatedly until the required cell con-
stant, e.g. 0.475 cm-1, appears on the display.

TDS UpH O Sal

mV/pH
S % mg/l

1C AL
Time Baud
m S/cm
mbarM cm
1/ cmSal
0475 °F° % /K TP
C
Day.Month No.
Year Ident

Tref25 Tref20 AutoCal DIN Auto Store

LoBat nLF Lin Cal AutoCal TEC ARng AR RCL

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 Operation Cond 315i

4 To return to the measuring mode: Press the <M> key.

4.3.2 Switching the temperature compensation (TC) on/off

The basis for calculating the temperature compensation is the selected
reference temperature, Tref 25 or Tref 20. For details of how to select
the reference temperature, see section 4.4 CONFIGURATION.
You can select from the following settings:
l Nonlinear temperature compensation (nLF) according to EN 27
888
l No temperature compensation (- - - -)

Note
ips Select the temperature compensations given in the following table ac-
cording to the respective test sample:

Sample Temperature compensation Display in-

Application tips
dicator
Natural water (ground nLF
water, surface water according to DIN 38404
and drinking water) EN 27 888
Ultrapure water nLF
according to DIN 38404
EN 27 888
Other aqueous solu- Measure without temperature ----
tions compensation

Salinity Automatic nLF according to Sal,

(seawater) IOT

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 Cond 315i Operation

Switching on the You can switch on the nonlinear temperature compensation as follows:
nonlinear temperature
compensation
1 Press the <CAL> key repeatedly until the status display tc
appears on the display.

TDS UpH O Sal

mV/pH
S % mg/l

18L F
Time Baud
m S/cm
mbarM cm
1/ cmSal
88t c °F° % /K TP
C
Day.Month No.
Year Ident

Tref25 Tref20 AutoCal DIN Auto Store

LoBat nLF Lin Cal AutoCal TEC ARng AR RCL

2 Press the <RUN/ENTER> key.

3 Press the <CAL> key repeatedly until nLF appears on the dis-
play.

TDS UpH O Sal

mV/pH
S % mg/l

1413
Time Baud
m S/cm
mbarM cm
1/ cmSal
8nL F °F° % /K TP
C
Day.Month No.
Year Ident

Tref25 Tref20 AutoCal DIN Auto Store

LoBat nLF Lin Cal AutoCal TEC ARng AR RCL

4 To return to the measuring mode: Press the <M> key.

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 Operation Cond 315i

Switching the tempera- You can switch off the temperature compensation as follows:
ture compensation off
1 Press the <CAL> key repeatedly until tc appears on the dis-
play.

TDS UpH O Sal

mV/pH
S % mg/l

18L F
Time Baud
m S/cm
mbarM cm
1/ cmSal
88t c °F° % /K TP
C
Day.Month No.
Year Ident

Tref25 Tref20 AutoCal DIN Auto Store

LoBat nLF Lin Cal AutoCal TEC ARng AR RCL

2 Press the <RUN/ENTER> key.

3 Press the <CAL> key repeatedly until 4 dashes appears on the
display.

TDS UpH O Sal

mV/pH
S % mg/l

1413
Time Baud
m S/cm
mbarM cm
1/ cmSal
---- °F° % /K TP
C
Day.Month No.
Year Ident

Tref25 Tref20 AutoCal DIN Auto Store

LoBat nLF Lin Cal AutoCal TEC ARng AR RCL

4 The temperature compensation is switched off.

5 To return to the measuring mode: Press the <M> key.

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 Cond 315i Operation

4.4 Configuration
You can adapt the following settings to your individual requirements
(the default setting is marked in bold):

Reference temperature 25 °C (TREF25) or

20 °C (TREF20)
Display of the measured val- S/cm or MΩ cm
ue as conductivity or specific
resistance

Note
You can leave the configuration menu at any time. The parameters that
have already been changed are stored.
To do so, press the <M> key.

1 Switch off the measuring instrument.

2 Press the <M> key and hold it down.
3 Press the <ON/OFF> key.
Display test appears briefly on the display. The measuring in-
strument then switches automatically to the setting of the refer-
ence temperature.

Selecting the reference TDS UpH O Sal

temperature mV/pH
S % mg/l

1t 25
Time Baud
m S/cm
mbarM cm
1/ cmSal
4YES °F° % /K TP
C
Day.Month No.
Year Ident

Tref25 Tref20 AutoCal DIN Auto Store

LoBat nLF Lin Cal AutoCal TEC ARng AR RCL

4 Use <CAL> to select between t25 and t20.

5 Confirm with <RUN/ENTER>. Cond appears on the display.

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 Operation Cond 315i

Selecting the display of TDS UpH O Sal

the measured value as mV/pH
S % mg/l

1t 25
conductivity / specific
resistance
m S/cm
mbar M cm
Time Baud 1/ cm Sal
C ond °F° % /K TP
C
Day.Month No.
Year Ident

Tref25 Tref20 AutoCal DIN Auto Store

LoBat nLF Lin Cal AutoCalTEC ARng AR RCL

6 Use <CAL> to select between S/cm and MΩ⋅cm.

7 Confirm with <RUN/ENTER>.
The measuring instrument automatically switches to the mea-
suring mode.

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 Cond 315i Operation

4.5 Reset
You can reset the measuring parameters (Initialization).

Basic settings The following settings are reset to the default values when a reset is
performed (initialized):

Setting Default settings

Measuring mode
Cell constant 0.475 cm-1
Reference temperature
Temperature compensation nLF switched on

Proceed as follows:

1 Press the <RUN/ENTER> key and hold it down.

2 Press the <CAL> key.

TDS UpH O Sal

mV/pH
S % mg/l

1iN i
Time Baud
m S/cm
mbarM cm
1/ cmSal
8250 °F° % /K TP
C
Day.Month No.
Year Ident

Tref25 Tref20 AutoCal DIN Auto Store

LoBat nLF Lin Cal AutoCal TEC ARng AR RCL

3 Confirm with <RUN/ENTER>. The functions are reset. The in-

strument switches to the measuring mode.

Retaining settings:
Use <M> to change to the measuring mode without a reset.

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 Operation Cond 315i

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 Cond 315i Maintenance, cleaning, disposal

5 Maintenance, cleaning, disposal

5.1 Maintenance
The measuring instrument is almost maintenance-free.
The only maintenance task is replacing the batteries. LoBat indicates
that the batteries should be changed. The batteries are then largely de-
pleted.

Replacing the batteries

1 Open the housing after the instrument has been switched off:
– Undo the four screws on the underside of the instrument
– Pull down the lower cover (1).
2 If necessary, take the four depleted batteries (2) out of the bat-
tery compartment.
3 Place four new batteries (type Mignon AA) in the battery com-
partment.
4 Close the lower cover (1).

Warning
Make sure that the poles of the batteries are the right way round.
The ± signs on the batteries must correspond to the ± signs in the bat-
tery compartment.
Only use leakproof alkaline manganese batteries.

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 Maintenance, cleaning, disposal Cond 315i

Note
For the maintenance of the measuring cells, follow the corresponding
operating manual.

5.2 Cleaning
Occasionally wipe the outside of the measuring instrument with a
damp, lint-free cloth. Disinfect the housing with isopropanol as re-
quired.

Warning
The housing is made of a synthetic material (ABS). Thus, avoid contact
with acetone and similar detergents that contain solvents. Remove any
splashes immediately.

5.3 Disposal
Packing This measuring instrument is sent out in a protective transport packing.
We recommend: Keep the packing material. The original packing pro-
tects the instrument against damage during transport.

Batteries This note refers to the battery regulation that applies in the Federal Re-
public of Germany. We would ask end-consumers in other countries to
follow their local statutory provisions.

Note
This instrument contains batteries. Batteries that have been removed
must only be disposed of at the recycling facility set up for this purpose
or via the retail outlet.
It is illegal to dispose of them in household refuse.

Measuring instrument Dispose of the measuring instrument as electronic waste at an appro-

priate collection point. It is illegal to dispose of the instrument in house-
hold refuse.

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 Cond 315i What to do if...

6 What to do if...

Display LoBat Cause Remedy

– Batteries almost empty – Replace batteries
(see section
5.1 MAINTENANCE)

Error message Cause Remedy

OFL
The measured value lies outside
the measuring range
– Cable broken – Replace measuring cell

Instrument does not Cause Remedy

react to keystroke
– Operating condition – Press the <CAL> and
undefined or EMC load <ON/OFF> keys at the same
unallowed time and release them again.
The software version is
displayed briefly.

27

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 What to do if... Cond 315i

28

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 Cond 315i Technical data

7 Technical data

Storage - 25 °C ... + 65 °C
Ambient temperature
Operation -10 °C ... + 55 °C
Allowable relative hu- Yearly mean: < 75 %
midity 30 days/year: 95 %
Other days: 85 %

Measuring ranges and

resolution of LF [µS/cm] 0.000 ... 19.99
(only for cell constant = 0.1 cm-1)
0.0 ... 199.9
0 ... 1999

[mS/cm] 0.00 ... 19.99

0.0 ... 199.9
0 ... 500
Spec. resistance 0.00 ... 19.99
[MΩ*cm] 0.0 ... 199.9
0 ... 1999
SAL 0.0 ... 70.0 according to the IOT table
T [°C] − 5.0 ... + 105.0

Accuracy
(± 1 digit) No compensation:
Accuracy ± 0.5 %
Nonlinear compensation
Accuracy Sample temperature
± 0.5 % 0 °C ... 35 °C
according to EN 27 888;
± 0.5 % 35 °C ... 50 °C
extended nLF function acc. to
WTW measurements
SAL Range 0.0 ... 42.0
Accuracy Sample temperature
± 0.1 5 °C ... 25 °C
± 0.2 25 °C ... 30 °C

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 Technical data Cond 315i

T [°C] NTC 30: Accuracy ± 0.1

PT 1000:
Accuracy Operating temperature
± 0.5 0 °C ... 15 °C
± 0.1 15 °C ... 35 °C
± 1 35 °C ... 55 °C

Selecting the C [cm-1] 0.1 fixed

cell constant: 0.475 fixed
0.875 fixed

Reference temperature TREF [°C] 25 or 20

Dimensions and weight Length [mm] 172

Width [mm] 80
Height [mm] 37
Weight [kg] Approx. 0.3

Power supply Batteries 4 x 1.5 V alkali-manganese batteries,

Type AA
Operational life Approx. 3000 operating hours

Mechanical Type of protection IP 66

structure

Guidelines EMC EG guideline 89/336/EWG

and norms used EN 61326 -1:1997
EN 61000-3-2 A14:2000
EN 61000-3-3:1995; FCC Class A
Instrument safety EG guideline 73/23/EWG
EN 61010-1 A2:1995
Climatic class VDI/VDE 3540
Type of protection EN 60529:1991

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 Cond 315i Technical data

FCC Class A Equipment Statement

Note: This equipment has been tested and found to comply with
the limits for a Class A digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is
operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause
harmful interference in which case the user will be required to
correct the interference at his own expense.

Test certificates cETLus, CE

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 Cond 315i Lists

8 Lists
This chapter provides additional information and orientation aids.

Abbreviations The list of abbreviations explains the indicators and the abbreviations
that appear on the display and in the manual.

Specialist terms The glossary briefly explains the meaning of the specialist terms. How-
ever, terms that should already be familiar to the target group are not
described here.

Index The index will help you to find the topics that you are looking for.

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Abbreviations

Conductivity value (international γ)

AR AutoRead (drift control)
ARng Automatic range switching
Measuring instrument measures with highest reso-
lution
C Cell constant [cm-1] (internat. k)
°C Temperature unit, degrees Celsius
Cal Calibration
LoBat Batteries almost empty
(Low Battery)
nLF Nonlinear temperature compensation
OFL Display range exceeded (Overflow)
SELV Safety Extra Low Voltage

TC Temperature coefficient (internat. α)

TP Temperature measurement active (Temperature
Probe)

TRef 20/T20 Reference temperature of 20 °C

TRef 25/T25 Reference temperature of 25 °C

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Glossary

Adjusting To manipulate a measuring system so that the relevant value (e. g. the
displayed value) differs as little as possible from the correct value or
a value that is regarded as correct, or that the difference remains with-
in the tolerance.
AutoRange Name of the automatic selection of the measuring range.
AutoRead WTW name for a function to check the stability of the measured value.
Calibration Comparing the value from a measuring system (e. g. the displayed
value) to the correct value or a value that is regarded as correct. Of-
ten, this expression is also used when the measuring system is adjust-
ed at the same time (see adjusting).
Cell constant, k Characteristic quantity of a conductivity measuring cell, depending on
the geometry.
Conductivity Short form of the expression, specific electrical conductivity. It is a
measured value of the ability of a substance to conduct an electric cur-
rent. In water analysis, the electrical conductivity is a dimension for the
ionized substances in a solution.
Measured parameter The measured parameter is the physical dimension determined by
measuring, e. g. pH, conductivity or D. O. concentration.
Measured value The measured value is the special value of a measured parameter to
be determined. It is given as a combination of the numerical value and
unit (e. g. 3 m; 0.5 s; 5.2 A; 373.15 K).
Measuring system The measuring system comprises all the devices used for measuring,
e. g. measuring instrument and probe. In addition, there is the cable
and possibly an amplifier, terminal strip and armature.
Reference Fixed temperature value to compare temperature-dependent mea-
temperature sured values. For conductivity measurements, the measured value is
converted to a conductivity value at a reference temperature of 20 °C
or 25 °C.
Reset Restoring the original condition of all settings of a measuring system.
Resistance Short name for the specific electrolytic resistance. It corresponds to
the reciprocal value of the electrical conductivity.
Resolution Smallest difference between two measured values that can be dis-
played by a measuring instrument.
Salinity The absolute salinity SA of seawater corresponds to the relationship
of the mass of dissolved salts to the mass of the solution (in g/Kg). In
practice, this dimension cannot be measured directly. Therefore, the
practical salinity is used for oceanographic monitoring. It is deter-
mined by measuring the electrical conductivity.

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Salt content General designation for the quantity of salt dissolved in water.
Sample Designation of the sample ready to be measured. Normally, a test
sample is made by processing the original sample. The test sample
and original sample are identical if the test sample was not processed.
Setting the Name of a function that considers the temperature influence on the
temperature measurement and converts it accordingly. Depending on the mea-
compensation sured parameter to be determined, the temperature compensation
functions in different ways. For conductimetric measurements, the
measured value is converted to a defined reference temperature. For
potentiometric measurements, the slope value is adjusted to the tem-
perature of the test sample but the measured value is not converted.
Slope The slope of a linear calibration function.
Standard solution The standard solution is a solution where the measured value is
known by definition. It is used to calibrate a measuring system.
Temperature function Name of a mathematical function expressing the temperature behav-
ior of a test sample, a probe or part of a probe.

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Index

A Replacing the batteries 25

Authorized use 9 Reset 23
AutoRead 15 Resetting parameters 23

B S
Basic settings 23 Safety 9
safety precautions 9
Salinity 15
C Scope of delivery 11
Calibration 17 software 27
Cell constant
Setting 17
Conductivity 14
T
Temperature compensation
18
D Temperature compensation
Default settings 23 (conductivity) 13
Display 8 Temperature probe
Drift control 15 Conductivity 13

E
Error messages 27

I
Initialization 23

J
Jack field 8

K
Keys 7

L
LoBat 27

M
Measuring 13

O
Operating safety 10

R
Reference temperature
(conductivity) 13

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