Laurel-electronics LT: 4-20 mA Current Loop Transmitter for Resistanc User Manual download pdf (Page 3)

LAUREL

ELECTRONICS INC., 3183-G Airway Ave., Costa Mesa, CA 92626, USA • Tel 714-434-6131 • www.laurels.com 3

Pinout

Mechanical

QA Application with Relays in Passband Mode

A deviation limit (50 mΩ in this example) is set up

around both sides of a setpoint. The relay closes (or

opens) when the reading falls within the deviation

band, and opens (or closes) when the reading falls

outside of this band. This mode sets up a passband

around the setpoint and can be used for contact

resistance testing in a production environment.

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Laurel-electronics LT: 4-20 mA Current Loop Transmitter for Resistanc User Manual Page 3