Liquisys M CPM223/253
Commissioning
Hauser
73
Factory settings
The first time it is switched on, the device has the factory setting for all functions. The table below
provides an overview of the most important settings.
All other factory settings can be found in the description of the individual function groups in the
"System configuration" section (the factory setting is highlighted in
bold
).
* For corresponding version
Alarm contact
Function
Factory setting
Type of measurement
pH or redox absolute,
Temperature measurement in °C
Type of measurement compensation
Linear with reference temperature 25 °C (77 °F)
Temperature compensation
Automatic (ATC on)
Limit value for controller 1
pH 16 (redox: -1500 mV or 0 %)
Limit value for controller 2
pH 16 (redox: +1500 mV or 100 %)
Hold
Active during configuration and calibration
Contact 1 ... 4
Limit contactor pH, function off
Current outputs 1* and 2*
4 ... 20 mA
Current output 1: measured value for 4 mA
signal current*
pH 2
Current output 1: measured value for 20 mA
signal current*
pH 12
Current output 2: temperature value for 4 mA
signal current*
0.0 °C (32 °F)
Current output 2: temperature value for
20 mA signal current*
100.0 °C (212 °F)
C07-CxM2x3xx-04-06-00-xx-001.eps
Fig. 47:
Recommended fail-safe switching for the alarm contact
A Normal operating status
B Alarm condition
Normal operating status:
• Device in operation
• No error message present
(Alarm LED off)
› Relay energised
› Contact 42/43 closed
Alarm condition
• Error message present (alarm LED red)
or
• Device defective or voltage-free (alarm LED off)
› Relay de-energised
› Contact 41/42 closed
41
42
43
41
42
43
A
B
