Xylem GL500-2-1 Data Logger - Manual (Page 28)

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XVII. Input Connections
The digital input uses a standard RCA jack
on the bottom of the case and 2 strain reliefs
are provided for feeding sensor cables into
the case where the analog input connector is.
To access the analog sensor connections
inside the logger, loosen the four screws
and remove the lid.
The “V+” or “Sensor Power” terminal provides power to the sensor. This is a
switched power source which, to preserve power, is on only during the sensor warm-
up time. The “Channel One” and “Channel Two” terminals are 4-20mA current loop
inputs for the analog channels and “Ground” is circuit ground.