Xylem ProLab 2000 - Manual (Page 53)

ProLab 2000 Operation
53 ba75577e05 11/2013
4.6 Ion concentration
4.6.1 General information
Note
Incorrect calibration of ion sensitive electrodes will result in incorrect
measured values. Calibrate regularly before measuring.
CAUTION
When connecting an earthed PC/printer, measurements cannot be
performed in earthed media as incorrect values would result. The
RS232 and USB interfaces are not galvanically isolated.
Temperature
measurement with ISE
measurements
For reproducible measurements of the ion concentration, it is essential
to measure the temperature of the test sample.
You have the following options to measure the temperature:
 Measurement by a temperature sensor.
 Measurement of the temperature by the integrated temperature
sensor of a simultaneously connected D.O. sensor or conductivity
measuring cell in the test sample.
 Manual determination and input of the temperature.
The meter recognizes whether a suitable sensor is connected and
automatically switches on the temperature measurement.
The display of the temperature indicates the active temperature
measuring mode:
* If this is not required you can unplug the second sensor and enter the
temperature manually.
Temperature
sensor
Resolution of the
temp. display
Mode
- 1 °C Manual
yes 0.1 °C Automatic with
temperature sensor
yes 0.1 °C,
measured
temperature value
flashes The temperature value of
the second sensor (Cond
or Oxi) in the same test
sample is taken over for
measurement*