GF Signet ProcessPro 8850-2 Installation Manual page 3

Select the sensor with the range that best suits your application
requirements.
• 2818, 2819-1, 2839-1 (0.01 cell): 0.01 to 100 μS
Use the 2818, 2819-1 or the 2839-1 for all resistivity requirements.
• 2820-1, 2840-1 (0.1 cell):
• 2821-1, 2841-1 (1.0 cell):
• 2822-1, 2842-1 (10.0 cell):
• 2823-1 (20.0 cell):
3.2 System Power/Loop Connections
Stand-alone application, no current loop used
(NOTE: AUX power must be connected to the power supply for the relays to function.)
Connection to a PLC/Recorder, separate supply
Transmitter
Terminals
Black
4
System Pwr Loop - 4
3
System Pwr Loop +
3
AUX Power -
2
2
AUX Power +
1
1
AUX power required for all 8850-2 systems
Example: Two transmitters connected to PLC/Recorder with separate power supply
8850-2 Conductivity/Resistivity Transmitter
(10 kΩ to 100 MΩ)
1 to 1000 μS
10 to 10,000 μS
100 to 200,000 μS
200 to 400,000 μS
Transmitter
Terminals
4
System Pwr Loop -
4
3
System Pwr Loop +
3
AUX Power - 2
2
AUX Power + 1
1
PLC or Recorder
+
Loop Input
4-20 mA
-
Red
Power
-
Supply
Black
+
12-24 VDC
Transmitter 1
Terminals
4
System Pwr Loop - 4
3
System Pwr Loop +
3
AUX Power - 2
2
AUX Power +
1
1
UPW @ 25°C USP
Rinse
Water
3-2820, 3-2840
3-2818, 3-2819, 3-2839
0.010 μS 0.054 μS 1 μS 10 μS
100 M 18.3 M 1 M 100 K
Red
Power
-
Supply
+
12-24 VDC
Black
Connection to a PLC with built-in power supply
Transmitter
Terminals
System Pwr Loop -
System Pwr Loop +
AUX Power -
AUX Power +
PLC or Recorder
Black
+
Channel 1
Red
4-20 mA in
-
- Channel 2
4-20 mA in
+
Black
Black
Power
-
Supply
+
12-24 VDC
Cooling Tower
Deionization Regen. Chemicals
Bottled Waste Waters
Water
Brackish Sea Water
3-2823 (Salinity)
3-2822, 3-2842
3-2821, 3-2841 (1.0 Cell)
( 0.10 Cell)
(0.01 Cell)
100 μS
200 μS 1,000 μS 10,000 μS
10 K 50,000 μS
Black
4
4 +
-
3
3
Red
2
2
-
Black
1
1
+
Internal
PLC Connection
Transmitter 2
Terminals
4 System Pwr Loop -
4
3 System Pwr Loop +
3
AUX Power -
2
2
AUX Power +
1
1
Alkali Cleaners, Acids/Bases
(20.0 Cell)
(10.0 Cell)
100,000 μS 400,000 μS
200,000 μS
PLC Terminals
Loop Input
4-20 mA
Power
Supply
12-24 VDC
3