wtw Cond 3310 IDS, Operating Manual

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Conductivity Cond 3310 IDS
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temperature of the test sample.
IDS sensors measure the temperature with a temperature sensor integrated in
the IDS sensor.
5.2 Temperature compensation
The calculation of the temperature compensation is based on the preset refer-
ence temperature, 20 °C or 25 °C. It appears on the display as
Tr20 or Tr25 .
You can select one of the following temperature compensation methods:
 Nonlinear temperature compensation ( nLF ) according to EN 27 888
 Linear temperature compensation (lin) with adjustable coefficients of
0.000 ... 3.000 %
/
K
 No temperature compensation (off)
Application tips Select the following temperature compensations given in the table according to
the respective test sample:
5.3 Calibration
5.3.1 Why calibrate?
Aging slightly changes the cell constant, e.g. due to coatings. As a result, an
inexact measured value is displayed. The original characteristics of the cell can
often be restored by cleaning the cell. Calibration determines the current value
of the cell constant and stores this value in the meter.
Thus, you should calibrate at regular intervals.
The reference temperature and temperature compensation are set
in the menu for the parameter, conductivity (see section 6.1.1 S
ET
-
TINGS FOR
IDS
CONDUCTIVITY SENSORS
, page 30).
Test sample Temperature compensation Display
Natural water
(ground water, surface
water, drinking water) nLF
according to EN 27 888
nLF
Ultrapure water nLF
according to EN 27 888
nLF
Other aqueous solu-
tions lin Set linear
temperature coefficient
0.000 ... 10.000 %/K
lin
Salinity (seawater) Automatic nLF according to
IOT (International Oceano-
graphic Tables)
Sal , nLF