ProMinent DULCOMETER D2C Operating Instructions Manual page 13

Operating Menu / Description
DPD-value measured value
zero point measured value (mA)
Error message
Calibration Cl not possible
probe slope too low
Calibration Cl not possible
probe slope too high
DPD value too low
DPD > x.xx ppm
Zero point too high
Zero point too low
Priming
Metering pumps without an integrated electronic controller need to be commissioned after changing a tank
or when starting up the metering equipment for the first time.
It is essential to prime (filling the pump and suction line with chemical) and completely vent the discharge
line up to the discharge valve for the metering equipment to function correctly (see operating instructions
for metering equipment and pump!)
calibration Cl
calibration Cl
2
only with measuring
zero p.: 4.00 mA
slope:
range 0,5 ppm
6.00 mA/ppm
calibration Cl
zero point:
calibration
end?
Possible values
Initial value
Condition
Cl slope too low
(<25% of standard slope)
Cl slope too high
(>300% of standard slope)
DPD <2 % of measuring range
probe signal >5 mA
probe signal <3 mA
calibration Cl
2
DPD-value DPD-value:
0.45 ppm
calibration Cl
2
zero point
0.45 ppm value take over?
Increment
0.01 ppm
–
2
0.45 ppm
calibration Cl
zero p.:
slope:
6 mA/ppm
2
4.01 mA
Lower value
0 ppm
–
Effect
Repeat calibration
Repeat calibration
Repeat calibration after addition of
chlorine
Repeat calibration in chlorine-free
water
Check probe connection
replace probe, if necessary
2
4.00 mA
Upper value
20 ppm
–
13