Xylem MultiLab 4010-2 Manual do Utilizador descarregar pdf (Página 57)

MultiLab 4010-2 Conductivity

ba76142e01 05/2013 57

8.1.2 Measuring the temperature

For reproducible conductivity measurements, it is essential to measure the

temperature of the test sample.

IDS sensors measure the temperature with a temperature sensor integrated in

the IDS sensor.

8.2 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 ISO 7888

 Linear temperature compensation (lin) with adjustable coefficients of

0.000 ... 3.000 %

 No temperature compensation (off)

Application tips Select the following temperature compensations given in the table according to

the respective test sample:

The reference temperature and temperature compensation are set

in the menu for the parameter, conductivity (see section 9.4.1 S

ET-

TINGS FOR IDS CONDUCTIVITY SENSORS, page 68).

Test sample Temperature compensation Display

Natural water

(ground water, surface

water, drinking water)

nLF

according to ISO 7888

nLF

Ultrapure water nLF

according to ISO 7888

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

1 2 ... 52 53 54 55 56 57 58 59 60 61 62 ... 111 112

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Xylem MultiLab 4010-2 Manual do Utilizador Página 57