Connecting loop powered sensors to Gantner modules
What is a loop powered device?
This is a 2-wire device that transmits a current signal and requires a power supply to operate. The loop consists of the sensor/transmitter, receiver, and the power supply. Multiple devices can be powered in the same loop, making it easier to power multiple devices on a single supply.
The transmitter is the sensor and the receiver is the Gantner module. Electrical power and analog information is transferred over the same two wires.
How to connect to Gantner module?
There are 2 methods to connect a loop powered device to a Gantner module. The power supply is connected in the loop between the sensor and the module.
Method 1
Negative from the power supply → AI- of channel on module
Negative of the sensor → AI+ of channel on module
Method 2
Positive from the power supply → AI+ of channel on module
Positive from the sensor → AI- of channel on module
Example of connection to the module
e.g. A108 with shunt resistor terminal block
