ProMinent DULCOMETER Assembly And Operating Instructions Manual page 58

Operating menus for the measured variables pH and ORP
Correct sensor operation
Correct measuring and metering is only possible if the sensor is working per‐
–
fectly
Observe the sensor operating instructions
–
During the calibration: the DULCOMETER
'0' . Exception to this: a basic load or a manual control variable has been set. This
to
remains active. The mA standard signal output is frozen.
Used buffer
Dispose of the used buffer solution. Related info: see buffer solution safety data
sheet.
Fig. 27: Redox sensor calibration (CAL) * corrected value
A container with a redox buffer solution (e.g. 465 mV) is needed for testing.
1.
Select the Test menu
2. Immerse redox sensor in the redox buffer solution containing test container (e.g.
465 mV)
3. Wait until the mV value has stabilised
4. Adjust the displayed mV values using the keys
redox buffer solution in the test container. Confirm the value by pressing
OFFSET value is transferred into the measuring parameters
quits the test menu without transferring the OFFSET value into the meas‐
ð
uring parameters.
5. If the redox sensor is unclean or defective, it must be cleaned as described in the
redox sensor operating instructions, or alternatively replaced
58
Compact Controller sets the control outputs
®
, and to the mV value of the
. The
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