Description
FOXBORO RH924WA It is specifically used for the I/A Series DCS system RTD (Resistance Temperature Detector) Input Module, suitable for a variety of industrial temperature monitoring and control scenarios. This module supports multiple types of RTD sensors, such as Pt100, Ni100, etc., featuring high-precision measurement capabilities and strong anti-interference characteristics, and is widely used in industries with extremely high temperature control requirements, such as power, chemical, pharmaceutical, and metallurgical sectors.

FOXBORO RH924WA
Core Functions and Technical Highlights
? Supports multiple types of RTD
Compatible with mainstream industrial RTDs such as Pt100, Pt200, Pt1000, Ni100, Cu10, etc.
? Multi-channel design
Typically supports 8 to 16 channel inputs (depending on the model variant), saving installation space and improving module utilization.
? High-precision sampling
Built-in high-resolution A/D converter, capable of milliohm-level micro-resistance detection, with temperature error controlled within ±0.1℃.
? Cold end automatic compensation
Integrates a linearization algorithm with a cold-end compensation circuit to ensure measurement stability and accuracy.
? Redundant system support
The module can be used for redundant control structures to improve system reliability.
? Maintenance-free design
The industrial-grade component protection module ensures long-term stable operation and supports hot-swapping and online diagnostics.
Technical Specification Table
| Parameter Item | Description |
|---|---|
| Model | RH924WA |
| Module Type | Resistance Temperature Detector (RTD) Input Module |
| Compatible System | FOXBORO I/A Series DCS Control System |
| Input Type | Pt100, Pt200, Pt1000, Ni100, Cu10, etc. |
| Number of channels | 8 channels (subject to the actual version)|
| Sampling Accuracy | ±0.1℃ (typical)|
| Input Range | -200℃ to 850℃ (specifically related to the type of RTD)|
| Isolation Voltage | Channel-to-channel isolation ≥ 2500 VDC |
| Cold Junction Compensation | Supports automatic compensation |
| Linearization Support | Supports built-in lookup table algorithm |
| Module Interface | Standard I/O card slot interface, supports hot swapping |
| Installation Method | DIN rail or rack-mounted, depending on system configuration|
| Certification Standards | CE、UL、CSA、RoHS |
| Operating Environment Temperature | -20℃ ~ +60℃ |
| Storage Temperature | -40℃ ~ +85℃ |
Typical application areas
✅ Power Plant Boiler Temperature Monitoring
Used to detect the temperature of areas such as the water wall and superheater to ensure the safe operation of the boiler.
✅ Petrochemical Production Line Temperature Control System
Accurately monitor the temperature of process equipment such as reactors, pipelines, and coolers.
✅ Metallurgy and Rolling Mill
Control the operating temperature of equipment such as heat treatment furnaces and heating furnaces to achieve automated thermal control.
✅ Pharmaceutical Workshop Clean Temperature Control
High-precision temperature monitoring ensures GMP compliance in pharmaceutical manufacturing processes.
✅ Food and Beverage Industry
Temperature control and data recording, meeting the needs of quality traceability and process control.
Related Product Recommendations (FOXBORO Module Series)
| Model | Function and use |
|---|---|
| RH924WA | RTD Temperature Input Module |
| FBM214 | Thermocouple input module, suitable for various types of TC sensors |
| FBM204 | Analog Voltage Input Module (AI) |
| FBM223 | Analog Output Module (AO) |
| FBM231 | Digital Input Module (DI) |
| FBM241 | Digital Output Module (DO) |

FOXBORO RH924WA
Installation and Maintenance Recommendations
?️ Installation Prompt:
It is recommended to use shielded twisted pair wiring.
The wiring distance should not exceed the specified length to prevent signal attenuation;
Proper grounding to prevent signal fluctuations caused by common-mode interference;
The module should be installed in a ventilated, dry environment free of corrosive gases.
? Maintenance recommendations:
The temperature sampling curve can be regularly read through the I/A system backend to check for any drift.
If the temperature is abnormal, the sensor and wiring integrity should be checked.
The module supports online replacement. It is recommended to have 1–2 spare units to ensure emergency needs.



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