NOTICE!
Testing the ORP Sensor
With ORP measured variables, the sensor is not cali‐
brated but tested according to its design
– Observe any notification of abnormal behaviour
when testing the ORP sensor
– Should the test not be successful, replace the ORP
sensor
= automatic timing
check sensor
ORP
check sensor
ORP
sensor in buffer
r
460 mV
check sensor
measuremactive
please wait!
check sensor
ORP
mea. val
buffer
460 mV
465 mV
permanent display 1
A0064_GB
460 mV
Fig. 10: Testing ORP sensors
A container with a ORP buffer solution (e.g. 465 mV) is needed for
testing.
1.
Select the Test menu
2.
Immerse ORP sensor in the ORP buffer solution containing
test container (e.g. 465 mV)
3.
Start test with
ð
Test is running.
A buffer value is suggested once the waiting time has
expired.
4.
Using keys , and adjust the displayed "buffer"
(flashing) value to the mV value of the ORP buffer solution in
the test container. Confirm the value with .
ð
The D1Cb displays the status message of the ORP
sensor in plain text. If the ORP sensor is functioning cor‐
rectly, continuous display 1 will be displayed directly
5.
If the ORP sensor is unclean or defective, the ORP sensor
should be cleaned, as described in the ORP sensor oper‐
ating instructions, or alternatively replaced
Should the result of the calibration lie outside of the specified error
limits, an error message will appear, see
Testing the ORP Sensor
Description of the Testing of ORP
Sensors
Start up
28