Radiometer Analytical TitraLab 870, Reference Manual

Page: 246 / 286

Titra Lab ® TitraLab 870 Reference Manual
Page 246
Temp.
correction
None/Linear/
Nat. water None
The TIM870 displays the sample conductivity at the sample
temperature. No correction is performed.
Linear
The TIM870 measures the sample conductivity and sample
temperature and then converts it to the reference temperature using a
temperature linear compensation function and displays the
conductivity at the reference temperature.
Enter the Reference temperature and a Temperature coefficient
expressed in % of conductivity variation per °C.
You can determine experimentally the Temperature
coefficient: see the “Conductivity theory and practice“ guide,
part no. D61M002.
Nat. water
The TIM870 measures the sample conductivity and sample
temperature and then converts it to 25 °C using a temperature non-
linear compensation function based on natural waters according to
ISO/DIN7888. Then, the conductivity is displayed at 25°C.
Select in:
Edit Method > Method parameters (for a conductivity measurement
method)
Range available:
Reference Temp.: 0 to 99°C in steps of 1°C
Temp. coef.: 0.00 to 9.99 %/°C in steps of 0.01 %/°C
As conductivities vary versus temperature, it is
recommended for high accuracy measurement:
•to use a temperature sensor or a conductivity cell with
built-in temperature sensor.
•to thermostate samples, so that the same temperature is
used for the calibrating and measuring.