Liquisys M CCM223/253 Commissioning
Endress+Hauser 81
7.5 Calibration
Use the CAL key to access the calibration function group.
Use this function group to calibrate the transmitter.
When calibrating the "Free chlorine" measurement mode, make sure to pay attention
to the pH value and the temperature of the medium. The limit values are provided in
the following table:
Sensor pH
min
pH
max
T
min
T
max
CCS140 4 8 10 °C (50 °F) 45 °C (113 °F)
CCS141 4 8.2 2 °C (36 °F) 45 °C (113 °F)
CCS240 - - 2 °C (36 °F) 45 °C (113 °F)
CCS241 - - 2 °C (36 °F) 45 °C (113 °F)
CCS120 5.5 9.5 5 °C (41 °F) 45 °C (113 °F)
Please note the following:
• You require a photometer, e.g. PF-3 (see "Accessories") to calibrate chlorine and chlorine
dioxide. A photometer with a higher accuracy rating and lower detection limit is required
for calibration in the trace range (<0.1 mg/l).
• If the calibration is aborted by simultaneously pressing the PLUS and MINUS keys
(return to C15, C29 or C35), or if the calibration is incorrect, the original calibration data
are used again. A calibration error is indicated by “ERR” and the sensor symbol flashes
on the display.
Repeat calibration!
• For each calibration, the device automatically switches to hold (factory setting).
• On completion of the calibration, the device returns to the measurement mode. The
"hold" symbol appears on the display during the hold dwell period (field S4).
Coding Field Range of
adjustment
(factory
settings in
bold)
Display Info
C(1)
CALIBRATION
function group:
Calibration Cl
2
/
ClO
2
Cl2
ClO2
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