Technical data Liquisys M CPM223/253
106 Endress+Hauser
11 Technical data
11.1 Input
Measured variables pH (analog or digital sensors)
ORP
Temperature
Measuring range
Input resistance > 10
12
(for nominal operating conditions) for standard sensors
Cable specification
Binary inputs
Current input 4 to 20 mA, galvanically separated
Load: 260 at 20 mA (voltage drop 5.2 V)
11.2 Output
Output signal 0/4 to 20 mA, galvanically separated, active
pH: –2 to 16
ORP: –1500 to +1500 mV / 0 to 100 %
Temperature:
Pt 100 -50 to +150 °C (-58 to +302 °F)
Pt 1000 (versions IS / PS) -50 to +150 °C (-58 to +302 °F)
NTC 30K (versions IS / PS) -20 to +100 °C (-4 to +212 °F)
Length of cable (analog): max. 50 m (164 ft)
Length of cable (digital): max. 100 m (328 ft)
Voltage: 10 to 50 V
Power consumption: max. 10 mA
HART
Signal coding Frequency Shift Keying (FSK) + 0.5 mA via current output
signal
Data transfer rate 1200 Baud
Galvanic isolation yes
PROFIBUS PA
Signal coding Manchester Bus Powered (MBP)
Data transfer rate 31.25 kBit/s, voltage mode
Galvanic isolation yes (IO-Module)
PROFIBUS DP
Signal coding RS485
Data transfer rate 9.6 kBd, 19.2 kBd, 93.75 kBd, 187.5 kBd, 500 kBd, 1.5 MBd
Galvanic isolation yes (IO-Module)
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