Foxboro RH927AH – FBM214b HART input module

The Foxboro RH927AH (FBM214b) is a HART communication input module designed for Foxboro distributed control systems (DCS). It provides eight isolated analog input channels capable of receiving standard 4–20 mA signals together with HART digital communication from field transmitters.

The module allows direct communication with HART-compatible devices such as pressure, flow and temperature transmitters while simultaneously collecting analog process signals. It is commonly used in industrial process automation systems where reliable measurement and diagnostics are required.

Technical overview:
• Product type: HART analog input module
• Model: RH927AH (FBM214b)
• System compatibility: Foxboro DCS / I/A Series
• Channels: 8 isolated analog inputs
• Supported signals: 4–20 mA and HART communication
• HART protocol: versions 5 / 6 / 7
• Communication speed: 1200 baud
• Measurement update time: approx. 100 ms
• Analog accuracy: approx. ±0.03 % of full scale
• Power supply: 24 V DC
• Mounting: control system baseplate / industrial rack
• Operating temperature: approx. –20°C to +70°C

Typical applications:
• Industrial process control systems
• Oil and gas facilities
• Chemical and petrochemical plants
• Power generation stations
• Water and wastewater treatment systems

About the manufacturer:
Foxboro, part of Schneider Electric, is a well-known brand in process automation and distributed control systems (DCS). Foxboro technologies are widely used in industrial plants where accurate measurement and reliable process control are critical.