Notes: 1. Where a sensor is earthed locally, either to an Earth Stud or
through the sensor casing or mounting, to avoid earth loops
the screen sheath of the cable should only be connected at
one end.
2. The above diagram shows the sensor connections for Channel
1. Channels 2, 3 and 4 connections are similar and their pin
connection numbers are shown below:
Channel Sensor Connection
01 NS Ground
Quad Relay 1 17 19 13
Interface Connections 2 18 20 14
3 23 25 13
4 24 26 14
Three Wire Control Card Current Sink, Transmitter Current Source Connection
for Searchline Excel Cross Duct (Signal Returned to 0V)
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