Endress+Hauser Liquiline CM444 - Connecting the Measuring Device

Liquiline CM442/CM444/CM448 Electrical connection
Endress+Hauser 23
5.2 Connecting the sensors
5.2.1 Sensor types with Memosens protocol for non-hazardous area
Sensors with Memosens protocol
Sensor types Sensor cable Sensors
Digital sensors without
additional internal power
supply
With plug-in
connection and
inductive signal
transmission
• pH sensors
• ORP sensors
• Combined sensors
• Oxygen sensors (amperometric and optical)
• Conductivity sensors with conductive measurement of
conductivity
• Chlorine sensors (disinfection)
Fixed cable Conductivity sensors with inductive measurement of
conductivity
Digital sensors with additional
internal power supply
Fixed cable • Turbidity sensors
• Sensors for interface measurement
• Sensors for measuring the spectral absorption coefficient
(SAC)
• Nitrate sensors
• Optical oxygen sensors
• Ion-sensitive sensors
The following rule applies if connecting CUS71D sensors:
• CM442
• Only one CUS71D is possible; an additional sensor is not permitted.
• The second sensor input may also not be used for another type of sensor.
• CM444
No restrictions. All the sensor inputs can be used as required.
• CM448
• If a CUS71D is connected, the number of sensor inputs that can be used is limited to a
maximum of 4.
• Of these, all 4 inputs can be used for CUS71D sensors.
• Every combination of CUS71D and other sensors is possible, provided that the total
number of connected sensors does not exceed 4.