Liquiline CM442R/CM444R/CM448R
18 Endress+Hauser
Concentration tables
When the device is delivered from the factory, tables are saved in the device that allow inductive
conductivity measurements to be converted to concentrations of certain substances. 4 user-defined
tables are also possible.
The following factory concentration tables are available:
NaOH 0 ... 15 % 0 to 100 ˚C (32 to 212 ˚F)
NaOH 25 ... 50% 2 to 80 ˚C (36 to 176 ˚F)
HCl 0 to 20 % 0 to 65 ˚C (32 to 149 ˚F)
HNO
3
0 to 30 % 2 to 80 ˚C (36 to 176 ˚F)
H
2
SO
4
0 to 28 % and 35 to 85 % 0 to 100 ˚C (32 to 212 ˚F)
H
2
SO
4
93 to 100 % 0 to 100 ˚C (32 to 212 ˚F)
H
3
PO
4
0 ... 40 % 2 to 80 ˚C (36 to 176 ˚F)
NaCl 0 ... 26 % 2 to 80 ˚C (36 to 176 ˚F)
Safety Real-time clock
The device has a real-time clock, which is buffered by a button cell battery if the power supply fails.
This ensures that the device continues to keep the correct date and time when it is restarted and that
the time stamp for the logbooks is correct.
Data security
All settings, logbooks etc. are stored in a non-volatile memory to ensure that the data are retained
even in the event of a disruption to the power supply.
Measuring range switching for conductivity
• Can be used in CIP processes e.g. for safe monitoring of phase separations
• Switching between 4 complete parameter sets:
– Conductivity operating mode
– Concentration tables
– Temperature compensation
– Output signal range
– Limit value switch
• Via digital inputs or fieldbus
Measured value compensation for oxygen and conductivity
• Pressure or temperature compensation
• Input signals from external sensors via current input or fieldbus
• Signals from connected temperature sensors
Password protection
Password-protected login
• For remote operation via web server
• For local operation
Process safety
Two independent PID controllers
• One- or two-sided control
• Limit switches
• 4 cleaning programs which can be programmed independently of each other
IT security
We only provide a warranty if the device is installed and used as described in the Operating
Instructions. The device is equipped with security mechanisms to protect it against any inadvertent
changes to the device settings.
IT security measures in line with operators' security standards and designed to provide additional
protection for the device and device data transfer must be implemented by the operators themselves.
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