Foxboro RH926GH Channel Communication Terminal

Product Overview

The Foxboro RH926GH is an 8‑channel analog input module designed for high‑precision signal acquisition in I/A Series distributed control systems. It interfaces sensors and transmitters with controllers to ensure accurate, reliable, and isolated data collection. Moreover, its modular architecture allows for easy integration and hot‑swappable maintenance, reducing downtime and operational disruptions. This module is particularly suitable for industries requiring precise monitoring, such as oil & gas, chemical processing, power generation, and water treatment.

Key Features and Functional Highlights

• Precision Acquisition: 16‑bit resolution and ±0.1% accuracy capture critical process variables with minimal error.

• Multi-Signal Compatibility: Supports 4–20 mA current and 0–10 V or ±10 V voltage inputs for flexible deployment.

• Noise Suppression: Advanced digital filtering and signal conditioning reduce interference in industrial environments.

• Channel Isolation: 8 fully isolated channels enhance safety and prevent cross-signal contamination.

• Modular Design: Hot-swappable construction allows maintenance without system shutdown.

• Real-Time Communication: Seamless integration with controllers via fieldbus protocols ensures continuous monitoring.

Technical Specifications

• Manufacturer: Foxboro

• Model: RH926GH

• Series: I/A Series

• Module Type: Channel Communication Terminal

• Input Channels: 8 isolated channels

• Signal Types: 4–20 mA current, 0–10 V or ±10 V voltage

• Resolution: 16-bit

• Accuracy: ±0.1% of span

• Update Rate: 100 ms per channel

• Isolation Voltage: 1500 V AC (channel to system)

• Operating Temperature: -20°C to +70°C

• Design Features: Hot-swappable, modular, advanced diagnostics

• Weight: 1.06 lbs

Typical Applications

• Process Variable Monitoring: Temperature, pressure, and flow measurements in real time.

• Industrial Automation: Data acquisition for chemical, oil & gas, and power plants.

• Water Treatment Systems: Precise signal capture for pumps, valves, and sensors.

• System Integration: Compatible with FBM224, FBM230, and FBM231 modules for scalable DCS setups.

Support & Maintenance

The RH926GH module provides advanced diagnostic information to facilitate preventive maintenance. In addition, its hot-swappable design reduces downtime during service. Comprehensive documentation and technical support from Foxboro ensure smooth integration and operational reliability.

FAQ

Q1: Can the RH926GH handle both current and voltage inputs simultaneously?
A1: Yes, it supports multiple signal types, including 4–20 mA and 0–10 V/±10 V voltage inputs.

Q2: How does the module ensure accurate data in noisy industrial environments?
A2: The module features digital filtering and signal conditioning to suppress interference.

Q3: Is it possible to replace the module without shutting down the system?
A3: Yes, the RH926GH is hot-swappable, allowing maintenance without interrupting operations.

Q4: What industries typically use this module?
A4: Oil & gas, chemical processing, power generation, and water treatment industries widely rely on this module.