Honeywell RAEGuard Lite Series Fixed Gas Detector
| Brand | Honeywell |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | RAEGuard Lite Series Point-Type |
| Pricing | Upon Request |
| Detection Principle | Catalytic Combustion (for combustible gases) / Electrochemical (for toxic gases & O₂) |
| Sampling Method | Diffusion |
| Power Supply | 24 VDC (16–32 VDC operating range) |
| Typical Power Consumption | <1 W (electrochemical), 2 W typical / 5 W max (catalytic) |
| Output Signals | Configurable 4–20 mA (sourcing), optional HART® 7.2 protocol |
| Digital Interface | RS485 Modbus RTU |
| Relay Outputs | Optional 3 × 30 VDC / 5 A |
| Enclosure Rating | IP66 |
| Explosion Protection | Ex db IIC T6 Gb / Ex tb IIIC T80°C (LEL & EC variants) |
| Operating Temperature | −40°C to +70°C |
| Operating Humidity | LEL: 0–95% RH (non-condensing) |
| Toxic/O₂ | 15–95% RH (non-condensing) |
| Pressure Range | 90–110 kPa |
| Dimensions (H×W×D) | 176 × 157 × 118.5 mm |
| Housing Material | Aluminum alloy |
| Sensor Housing Material | 316 stainless steel |
| Weight | ~2.3 kg |
| Optional Features | Built-in surge protection module, Bluetooth® wireless configuration, non-intrusive magnetic wand operation |
Overview
The Honeywell RAEGuard Lite Series Fixed Gas Detector is an industrial-grade point-type gas monitoring solution engineered for continuous, reliable detection of combustible gases (e.g., methane, propane, hydrogen), toxic gases (e.g., CO, H₂S, Cl₂, NO₂), and ambient oxygen (O₂) in hazardous environments. It operates on two fundamental sensing principles: catalytic combustion for flammable gas detection and electrochemical cell technology for toxic gas and oxygen measurement—both compliant with internationally recognized performance benchmarks for fixed gas detection systems. Designed for deployment in both indoor process areas and outdoor exposed locations—including oil & gas facilities, chemical plants, wastewater treatment stations, and confined-space entry zones—the RAEGuard Lite meets rigorous functional safety requirements while maintaining low lifecycle cost of ownership. Its architecture integrates intrinsic safety considerations, environmental resilience, and modular scalability without compromising measurement integrity or response fidelity.
Key Features
- Intelligent modular design: Separable transmitter and sensor modules enable rapid field replacement and calibration-free sensor swaps.
- Zero-point-free oxygen sensor: Eliminates nitrogen-based zero calibration for O₂ detection—reducing maintenance frequency and operational downtime.
- High-poisoning-resistance catalytic bead sensors: Engineered with advanced catalyst formulations to maintain stable output in presence of silicones, sulfides, and halogenated compounds.
- Dual-output capability: Standard 4–20 mA analog signal (sourcing type, fully configurable) plus optional RS485 Modbus RTU digital interface for scalable multi-device network integration.
- Robust mechanical construction: Aluminum alloy housing (IP66 ingress protection) with 316 stainless steel sensor head; certified to SIL2 per IEC 61508 and IEC 61511 for safety instrumented systems (SIS).
- Non-intrusive configuration: Magnetic wand enables full setup, span calibration, bump testing, and diagnostics without opening the enclosure—eliminating hot work permits during routine maintenance.
- Enhanced environmental compensation: Wide operating temperature (−40°C to +70°C) and humidity ranges with dynamic thermal and cross-sensitivity compensation algorithms ensure consistent accuracy across variable site conditions.
Sample Compatibility & Compliance
The RAEGuard Lite supports detection of over 30 common industrial gases through interchangeable sensor cartridges, including but not limited to methane (CH₄), hydrogen sulfide (H₂S), carbon monoxide (CO), chlorine (Cl₂), ammonia (NH₃), sulfur dioxide (SO₂), nitrogen dioxide (NO₂), and ambient oxygen (O₂). All sensor variants are certified to applicable regional explosion protection standards: Ex db IIC T6 Gb / Ex tb IIIC T80°C for combustible and electrochemical configurations. The device holds mandatory Chinese certifications including CCCF (China Certification Center for Fire Products) and CPA (China Metrology Accreditation), ensuring traceability and legal metrological compliance. It adheres to electromagnetic compatibility requirements per GB/T 17626.5–2008 (IEC 61000-4-5:2005) for surge immunity up to Level 4, and supports optional integrated surge protection modules for outdoor installations subject to lightning exposure.
Software & Data Management
While the RAEGuard Lite operates as a standalone detector, its Modbus RTU interface allows seamless integration into centralized SCADA, DCS, or BMS platforms for real-time concentration trending, alarm logging, and event correlation. Optional HART® 7.2 protocol support enables remote device configuration, diagnostic interrogation, and firmware updates via handheld communicators or asset management software. The built-in event log records calibration history, fault events, and alarm activations with timestamps—supporting GLP/GMP-aligned audit trails when connected to compliant data historians. Bluetooth® wireless functionality (optional) permits local commissioning and verification using the Honeywell Gas Detection Mobile App, reducing dependency on wired tools and enhancing technician mobility.
Applications
This detector is deployed across diverse industrial verticals where personnel safety and process continuity depend on early, accurate gas hazard identification. Typical use cases include continuous monitoring in compressor stations and pump houses (combustible gas), chlorine dosing rooms and acid storage areas (toxic gas), boiler rooms and inerted storage tanks (oxygen deficiency/enrichment), and biogas handling facilities (CH₄ + H₂S co-detection). Its compact form factor and dual mounting options (wall or pipe) make it suitable for retrofit projects with space constraints. The RAEGuard Lite also serves as a critical component in layered protection strategies—acting as the first line of defense prior to initiating emergency ventilation, shutdown sequences, or evacuation protocols.
FAQ
Does the RAEGuard Lite require zero calibration for oxygen detection?
Yes—the oxygen sensor is factory-calibrated and designed for zero-point-free operation under normal atmospheric conditions, eliminating the need for nitrogen-based zero adjustments during routine maintenance.
Can multiple RAEGuard Lite units be connected to a single control system?
Yes—via RS485 Modbus RTU daisy-chaining, up to 32 devices can be addressed on one bus, enabling centralized monitoring without additional signal conditioning hardware.
Is Bluetooth® connectivity standard or optional?
Bluetooth® is an optional feature available on select models; it must be specified at time of order and is not retrofittable in the field.
What is the maximum cable length for the 4–20 mA output?
With standard 1.5 mm² (16 AWG) twisted-pair cable and 24 VDC supply, the recommended maximum loop distance is 1,200 meters, assuming ≤600 Ω total loop resistance.
Does the device support third-party HART® masters?
Yes—it complies fully with HART® Foundation specifications v7.2 and is interoperable with Emerson DeltaV, Yokogawa CENTUM VP, and other HART-certified host systems.
