RAEGuard Lite
Fixed Gas Transmitter
The Honeywell RAEGuard Lite is a cost-effective fixed gas transmitter for the continuous monitoring of flammable, toxic and oxygen gases in industrial environments. Built for reliable performance, simple installation and low maintenance, the RAEGuard Lite is the practical choice for facilities that need accurate fixed gas detection without the cost of high-end alternatives. With contactless magnetic wand operation, a modular PCB design and support for 4-20 mA, Modbus RTU and optional HART 7.2 communications, the RAEGuard Lite integrates cleanly into existing SCADA, DCS and PLC systems.
KEY BENEFITS
- Cost-effective fixed gas detection for flammable, toxic and oxygen gases without the cost of high-end alternatives
- Anti-poisoning sensor technology for consistent long-term detection performance in demanding environments
- Contactless magnetic wand interface allows calibration and configuration without opening the housing in hazardous areas
- Modular pluggable PCB and terminal design reduces installation time and simplifies future maintenance
- Supports 4-20 mA, RS485 Modbus RTU and optional HART 7.2 for flexible integration with SCADA, DCS and PLC systems
+ more in the Description tab below
Reliable Fixed Gas Detection Without the High End Price
Fixed gas detection doesn’t always need the most advanced transmitter on the market. In many industrial applications, a reliable, accurate transmitter with the right outputs and solid hazardous area approvals is exactly what’s needed. The RAEGuard Lite is built to meet that need, without unnecessary cost or complexity.
It monitors flammable, toxic and oxygen gases, indoors and outdoors. It uses anti poisoning catalytic sensors for flammable gas, and advanced electrochemical sensors for toxic gases and oxygen. Wide compensation for temperature and environmental factors keeps readings stable and reliable.
The oxygen detector doesn’t need a nitrogen zero calibration, which simplifies maintenance and cuts cost.
Contactless Operation
Settings, calibration and configuration are done with a magnetic wand, through the sealed housing. There’s no need to open the detector for routine tasks, which saves time on maintenance in hazardous areas.
The RAEGuard Lite identifies gas types automatically, and the full scale range is adjustable. Early warning and fault diagnosis prompts, plus reminders for calibration and sensor life, help keep maintenance on track.
Flexible Outputs for System Integration
The RAEGuard Lite has a standard 3 wire 4-20 mA output, compatible with a wide range of controllers and alarm panels. RS485 Modbus RTU is standard too, for multi drop networking and real time remote monitoring through SCADA and DCS systems.
Optional HART 7.2 adds remote diagnostics and configuration. An optional relay module adds three relays (30 VDC, 5 A) for local alarm control. Talk to our Technical Consultants about current availability of the HART and relay options.
Simple Installation, Low Running Costs
The integrated design keeps installation simple and quick, using two U bolts for wall or pipe mounting. Pluggable terminal blocks and a pluggable PCB module make wiring easy, and parts can be replaced on their own rather than swapping the whole detector.
The large dot matrix LCD shows easy to read digits, a bar graph and icons. An optional built in surge protection device adds protection for outdoor installations.
A calibration cap is supplied as standard, so gas can be applied directly to the sensor for bump tests and calibration without removing the detector. The RAEGuard Lite is rated IP66 and is designed for Zone 1 and Zone 2 hazardous areas.
Benefits
- Cost-effective fixed gas detection for flammable, toxic and oxygen gases without the cost of high-end alternatives
- Anti-poisoning sensor technology for consistent long-term detection performance in demanding environments
- Contactless magnetic wand interface allows calibration and configuration without opening the housing in hazardous areas
- Modular pluggable PCB and terminal design reduces installation time and simplifies future maintenance
- Supports 4-20 mA, RS485 Modbus RTU and optional HART 7.2 for flexible integration with SCADA, DCS and PLC systems
- Three LED status indicators and fault diagnosis prompts make detector status easy to check
- Dot-matrix LCD with numeric display, bar graph and icon indicators for clear local gas reading
- IP66 rated for outdoor and harsh environment installation
- ATEX and IECEx certified for use in classified hazardous locations
- Reminders for calibration and sensor life keep maintenance on schedule
Input voltage
16 to 32 VDC (24 VDC nominal)
Power consumption
Less than 1 W (electrochemical), 2 W typical (catalytic), maximum 5 W
Output
4-20 mA source type, RS485 Modbus RTU, optional HART 7.2
Relays
Optional: 3 relays, 30 VDC, 5 A
Sensor housing
316 stainless steel
Transmitter housing
Aluminium alloy
Weight
2.3 kg (aluminium housing)
Display
Dot-matrix LCD with numeric reading, bar graph and icon indicators
Status lights
3 LED indicators
IP rating
IP66
Operating temperature (catalytic)
-40°C to +70°C
Operating temperature (toxic/O2)
-20°C to +55°C continuous. -40°C to +70°C intermittent (accuracy and response time affected)
Humidity (LEL)
0 to 95% RH
Humidity (toxic/O2)
15 to 95% RH non-condensing
Current output states
1 mA fault, 2 mA inhibit, 3 mA warning, 4 to 20 mA normal, 22 mA over range
Standard accessories
Calibration cap, quick start guide
Warranty
LEL, CO, O2 and H2S sensors: 12 months from commissioning or 18 months from shipment, whichever is sooner. Other toxic sensors: 12 months from commissioning
Pressure range
90 to 110 kPa
Mounting
4-point integral plate with M8 holes, U-bolt for wall or pipe
Cable entries
2 x 3/4-inch NPT, 1 x M25 sensor port
ATEX certification
LEL: Ex db IIC T6 Gb, Ex tb IIIC T80°C Db (Ta -40°C to +65°C). Ex db IIC T5 Gb, Ex tb IIIC T90°C Db (Ta -40°C to +75°C). Toxic/O2: Ex db IIC T6 Gb, Ex tb IIIC T80°C Db (Ta -20°C to +55°C)
IECEx certification
LEL: Ex db IIC T6 Gb, Ex tb IIIC T80°C Db IP66 (-40°C to +65°C). Ex db IIC T5 Gb, Ex tb IIIC T90°C Db IP66 (-40°C to +75°C). Toxic/O2: Ex db IIC T6 Gb, Ex tb IIIC T80°C Db IP66 (-20°C to +55°C)
EMC
EN 50270:2015, IEC 61000-4-5. Optional surge protection device
Methane
CH4
Carbon Monoxide
CO
Hydrogen
H2
Hydrogen Sulphide
H2S
Combustible Gas
LEL
Ammonia
NH3
Oxygen
O2
- Aviation & Transportation
- Carpark & HVAC
- Chemical Manufacturing
- Confined Space & Compliance
- Energy (Oil & Gas)
- Food & Beverage
- Landfill & Remediation
- Marine & Maritime
- Medical & Healthcare
- Mining & Minerals
- Power Generation & BESS
- Technology & Semiconductor
- Water & Wastewater
The RAEGuard Lite is a cost-effective fixed gas transmitter for continuous monitoring of flammable, toxic and oxygen gases in industrial environments. It is designed for applications that require reliable fixed gas detection without the cost of premium transmitters, with flexible communications for integration into existing safety control systems.
The RAEGuard Lite supports 4-20 mA analogue output, RS485 Modbus RTU for digital integration and optional HART 7.2 for advanced diagnostics and configuration. Optional relay modules provide 3 hardwired relay outputs for direct alarm connections.
The magnetic wand lets you calibrate, configure and adjust the RAEGuard Lite through the sealed housing, without opening the detector. That saves time on routine maintenance in hazardous areas.
Yes. The RAEGuard Lite carries an IP66 ingress protection rating and is suitable for outdoor installation in harsh environments.
The RAEGuard Lite holds ATEX and IECEx certification, Ex db IIC T6 or T5 Gb and Ex tb IIIC Db, depending on the sensor type and ambient temperature. It's designed for Zone 1 and Zone 2 hazardous areas.
A calibration cap is supplied as standard. It connects calibration gas directly to the sensor, so the detector doesn't need to be removed from its mounting. The magnetic wand starts and controls the calibration through the sealed housing.
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