Sensor Slope Calibration - ProMinent DULCOMETER Assembly And Operating Instructions Manual

Operating menus
8.1.1

Sensor slope calibration

Prerequisites for correct calibration of the sensor slope
Only calibration method DPD1 is permissible for both sensor types.
–
Wait until the run in period for the sensor has elapsed so that the measured
–
value has stabilised
Constant flow 20 l/h - 60 l/h for in-line probe housing present
–
There is temperature balance between the sensor and the sample water
–
There is a constant pH value in the permitted sensor range
–
The sensor is fitted, flushed with sample water, connected electrically to the controller
and run-in.
There has to be adequate feed chemical in the sample water for calibration.
Remove sample water directly at the measuring point and determine the chemical con‐
tent in the sample water in
OPERATION
1.05
25.0 °C
Fig. 23: Slope calibration
1. Press the
ð The menu
2. Press the
48
[ppm] . Enter this value into the controller as follows:
ppm
3.00
0%
↑
LIMIT
key
[CAL DPD] appears.
key
CAL DPD
SENSOR= 1.53 µA
1.05 ppm
CAL=TAKE SAMPLE
CAL DPD
DPD= 01.00 ppm
CAL DPD
SLOPE 95 % OK
CAL=ACCEPT
A1010