Xylem MULTI 3500i HANDHELD MULTIPARAMETER METERS - Manual (Page 43)

Multi 3500i Operation
41
4.5 Ion concentration
4.5.1 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 interface is not galvanically isolated.
Temperature
measurement in ISE
measurements
For reproducible measurements of the ion concentration, it is essential
to measure the temperature of the test sample.
You have the following possibilities of measuring the temperature:
z Measurement of the temperature by the integrated temperature sen-
sor of a simultaneously connected DO sensor or conductivity mea-
suring cell in the test sample.
z Manual determination and input of the temperature.
The measuring instrument recognizes whether a suitable sensor is
connected and automatically switches on the temperature measure-
ment.
The display of the temperature indicates the active temperature mea-
suring mode:
* If this is not required you can unplug the second sensor and enter the
temperature manually.
Temperature
sensor,
Cond or Oxi
Resolution
of the temp.
display Mode
- 1 °C Manual
yes 0.1 °C,
measured tem-
perature value
flashes The temperature value of
the second sensor (Cond
or Oxi) in the same test
sample is taken over for
measurement*