Xiamen ZhiCheng Automation Technology Co., Ltd
"Precision Engineered, Globally Trusted – Innovating Automation Control & Modular Excellence."
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The Foxboro RH916UK is a high-performance flow computer module designed for precision measurement and control in industrial automation systems. Part of Foxboro’s legacy I/A Series Distributed Control System (DCS), this module integrates seamlessly into 19-inch racks for real-time processing of flow, temperature, and pressure data. Engineered for reliability, it features ruggedized construction with EMI/RFI shielding and operates in temperatures from -40°C to +70°C. The RH916UK supports complex calculations (e.g., AGA gas/diesel flow equations) and interfaces with field sensors via analog/digital I/O. Its modular design enables hot-swapping for minimal downtime, while embedded diagnostics ensure operational integrity in critical sectors like oil and gas, refining, and energy management.
The RH916UK excels in fiscal metering and process optimization:
| Parameter Category | Specification / Attribute |
|---|---|
| Product Type | Pneumatic Cascade Controller (Force-Balance Mechanism) |
| Model Number | RH916UK |
| Manufacturer Era | Foxboro "Spec 200" Analog Control Line (1960s–1980s) |
| Primary Function | Cascade Control: Secondary loop receives setpoint from primary controller (e.g., temperature-pressure cascade) |
| Control Action | PID (Proportional-Integral-Derivative) with adjustable tuning |
| Input Signals | 2× Pneumatic Inputs: • Primary (Remote Setpoint): 3–15 psi • Secondary (Process Variable): 3–15 psi |
| Output Signal | Pneumatic: 3–15 psi (0.2–1.0 bar) |
| Supply Pressure | 20–35 psi (1.4–2.4 bar) instrument air |
| Setpoint Range | 0–100% span (Field-adjustable via calibration screws) |
| Proportional Band | 5–500% (Adjustable) |
| Integral (Reset) Time | 0.05–50 min/repeat (Adjustable) |
| Derivative (Rate) Time | 0.05–50 min (Adjustable) |
| Accuracy | ±0.5% of span (including linearity & hysteresis) |
| Wetted Materials | Diaphragms: Ni-Span-C alloy Seals: Buna-N (Std), Viton®/Teflon® (Optional) |
| Process Connections | 1/4" NPT air fittings |
| Housing Material | Cast aluminum enclosure with grey epoxy paint |
| Enclosure Rating | NEMA 4X (Equivalent to IP66) |
| Ambient Temp. Range | -20°C to +65°C (-4°F to +149°F) |
| Mounting | Panel-mount (Standard 1/8 DIN cutout) or pipe-stand |
| Weight | 3.6 kg (8 lbs) |
| Calibration | Manual zero/span screws with locking nuts |
| Status Indicators | Analog process/setpoint gauges (Optional) |
| Hazardous Area Certification | Class I, Div. 1, Groups A–D (UL/CUL) ATEX: Ex d IIC T5 (Optional) |
| Legacy Status | Discontinued (No direct replacement; superseded by digital systems) |
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Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.
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With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts.which make sure that all this jobs are
perfectly.
we are major in PLC,Sensors,HIM,Transmitters.
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