Converter creates time proportional output from 4-20 mA signal

Device from Athena Controls can drive temperature or process directly from sensor.

By Control Engineering Staff June 18, 2009

New APWM Series pulse control converter from Athena Controls mounts directly to a 3-32 Vdc SSR (solid state relay) to drive a process or temperature controller generating a time proportional output from a 4-20 mA signal.

The converter supports single- or three-phase operation, 50 or 60 Hz, and tolerates inputs less than 4 mA. Lever clamps are provided on the converter for the 4-20 mA input and the SSR’s power section provides easy connection to the line and load.

Read more on time proportional control strategy .

—Edited by Peter Welander, process industries editor, PWelander@cfemedia.com ,
Control Engineering Process Instrumentation & Sensors Monthly
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