Xiamen ZhiCheng Automation Technology Co., Ltd
"Precision Engineered, Globally Trusted – Innovating Automation Control & Modular Excellence."
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The Foxboro RH924WA is a high-accuracy industrial pressure transmitter engineered for critical process measurement in extreme industrial environments. Part of Foxboro’s renowned RH Series, this transmitter features a robust 316L stainless steel housing with IP67/IP68 protection, ensuring reliability in harsh conditions like chemical exposure, high humidity, and submersion. Utilizing advanced piezoresistive sensor technology, it delivers precise gauge, absolute, or differential pressure readings across ranges from 0–10 kPa to 0–100 MPa. The RH924WA supports 4–20 mA analog output with HART® 7 protocol integration, enabling seamless communication with distributed control systems (DCS) like Foxboro I/A Series. Designed for oil and gas, power generation, and chemical processing, its modular electronics allow field calibration without process interruption.
The RH924WA excels in mission-critical industrial processes:
| Feature Category | Parameter | Specification / Value | Notes / Details |
|---|---|---|---|
| Product Identification | Manufacturer | Foxboro (now Schneider Electric) | |
| Model Number | RH924WA | "WA" suffix typically denotes Weatherproof Aluminum Case | |
| Product Type | Single-Pen Circular Chart Recorder | Analog mechanical recorder | |
| Series | Foxboro 900 Series Circular Chart Recorders | Includes RH918, RH924, RH938 variants | |
| Recording Specifications | Chart Type | Circular Chart | |
| Chart Diameter | 250 mm (9.8 inches) | Standard size | |
| Chart Rotation Speed | 24 hours (standard); Optional: 8h, 12h, 48h, 96h, 168h (7 days) | Driven by synchronous motor | |
| Chart Drive | Spring-wound or Electric Motor | Electric motor standard on RH924WA | |
| Pen System | Single Stylus Pen | ||
| Span Adjustment | Manual via calibrated range screws | ||
| Zero Adjustment | Manual | ||
| Accuracy | ±0.25% of full scale (typical for voltage/mA inputs) | Depends on input type & range | |
| Repeatability | ±0.1% of full scale | ||
| Deadband | ≤0.1% of full scale | ||
| Input Specifications | Input Signals | Universal: DC Voltage (mV, V), DC Current (mA), RTD, Thermocouple | Configurable via jumpers/switches & range card |
| Standard Ranges (Voltage) | e.g., 1mV, 5mV, 10mV, 50mV, 100mV, 1V, 5V, 10V | Requires appropriate Range Card | |
| Standard Ranges (Current) | e.g., 10-50mA, 4-20mA, 0-20mA | ||
| Thermocouple Types | B, E, J, K, R, S, T | ||
| RTD Types | Pt100, Cu10, Cu50 | Typically 2-wire or 3-wire | |
| Input Impedance | ≥1 MΩ (Voltage); ≤10Ω shunt (Current) | ||
| Mechanical & Physical | Housing Material | Cast Aluminum (Weatherproof) | "WA" designation key feature |
| Protection Class (IP Rating) | NEMA 4X / IP66 | Weatherproof, dust-tight, corrosion-resistant; suitable for harsh environments | |
| Window Material | Tempered Glass or Polycarbonate | ||
| Case Color | Typically Gray or Safety Yellow | ||
| Dimensions (Ø x Depth) | ~305 mm Ø x ~180 mm (12" Ø x 7.1") | Excludes mounting hardware | |
| Weight | ~9 kg (20 lbs) | Approximate | |
| Mounting | Front-flange mounting (bolts through case rim) | Gasketed for seal | |
| Environmental | Operating Temperature | -40°F to +140°F (-40°C to +60°C) | With chart installed |
| Storage Temperature | -40°F to +160°F (-40°C to +71°C) | ||
| Humidity | 0-95% RH (non-condensing) | ||
| Power Supply | Standard Voltage | 120V AC, 60Hz; 240V AC, 50Hz | Other voltages/configurations available (e.g., 24V DC) |
| Power Consumption | ~15 VA (typical for AC models) | ||
| Fuse Rating | 0.5A Slo-Blo (120V); 0.25A Slo-Blo (240V) | ||
| Accessories & Options | Charts | Paper, Plastic, Laminated; Various scales (linear %, °F/°C, psi, etc.) | Pre-printed scales matching input range |
| Pens & Ink | Fiber-tip or pressure-sensitive; Replaceable ink cartridges | ||
| Alarm Options | Optional: Electro-mechanical limit alarm with SPDT contacts | Adjustable setpoint, deadband | |
| Transmitters | Optional internal signal conditioners (e.g., thermocouple to 4-20mA) | ||
| Compliance & Standards | Certifications (Historical) | UL, CSA, FM (Class I, Div. 2 / Zone 2 hazardous areas) | Specific certifications depend on exact model/year |
| Sealing | Gasketed door, conduit entries with plugs | Maintains NEMA 4X/IP66 rating | |
| Key Features | Robustness | Designed for extreme environments (offshore, chemical, pulp/paper) | |
| Visibility | Large, easy-to-read chart | ||
| Reliability | Simple electromechanical design with minimal electronics | Proven long-term operation |
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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
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we are major in PLC,Sensors,HIM,Transmitters.
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