Endress+Hauser Liquisys M CCM223 - Page 25

Liquisys M CCM223/253 Electrical connection
Endress+Hauser 25
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A0026048
 14 TOP68 connection; pin arrangement of connector and coupling (shown from contact side)
Connecting the chlorine sensor 963
The chlorine sensor 963 is supplied without a temperature sensor ex factory. Connect the
chlorine sensor to the transmitter as follows:
• Without temperature measurement:
Connect the 10 kΩ equivalent resistor supplied to terminals 11 and 12. The measured
value display will then constantly show 25 °C (77 °F).
• With temperature measurement:
Mount an NTC temperature sensor 10 kΩ / 25 °C (77 °F) (120 mm installation version
TSP 3692) in the chlorine sensor 963. Use the CPK1 connecting able to connect the
temperature sensor to terminals 11 and 12.
• Chlorine sensor:
Connect the red cable to terminal 92 (cathode) and the blue cable to terminal 91
(anode).
Connection of pH or ORP sensors
Connect the pH or ORP sensor always symmetrically to prevent a mutual interference of
several sensors mounted in the CCA250 assembly.
Symmetrical connection requires a potential matching pin. The pin is integrated as
standard in the CCA250 flow assembly and is connected by a PML to the PA/PM terminal.
CPK1
CPK9
PM
pH / Redox
PM
pH + Pt 100 / Pt 1000
Coax Ref.
pH or Redox
BN PM
Coax BK Ref.
inner pH
GN Temp.
WH Temp.
YE Temp.
BN PM
A0002330-EN
 15 Connection of the pH or ORP sensor to the field instrument with the cables CPK1 or CPK9