ABB Comab 211R Signal Conditioner 0-10V / 4-20mA

ABB Comab 211R Signal Conditioner — Analog Isolation and Conversion for Saudi Process Instrumentation

The ABB Comab 211R signal conditioner provides analog signal isolation and conversion for Saudi process instrumentation — converting 4-20mA sensor signals to 0-10V for PLC analog input cards that do not accept current-loop inputs. Comab 211R also provides galvanic isolation between field sensors and PLC inputs in Jubail and Dammam industrial environments where ground loops cause measurement errors.

Saudi industrial measurement applications often mix 4-20mA field transmitters with PLC systems that only accept 0-10V inputs — Comab 211R bridges this compatibility gap without replacing existing PLC hardware, reducing project cost on Jeddah and Dammam plant upgrades.

Key Features

0-10V / 4-20mA Conversion: Bidirectional — converts both directions between voltage and current signals.

Galvanic Isolation: 1500V AC isolation between input, output, and power — eliminates ground loops in long-sensor-run installations common to Saudi petrochemical plants.

Wide Power Supply: 20-250V AC/DC — universal power for all panel supply types.

High Accuracy: 0.1% conversion accuracy — maintains measurement precision through signal conversion.

Applications

Pressure Transmitter Signal Conversion: Comab 211R converts 4-20mA pressure transmitter output to 0-10V for legacy PLC analog inputs.

Level Transmitter Isolation: Comab 211R provides galvanic isolation for level transmitter signals in Jubail storage tank farms.

Technical Specifications