Honeywell RAEGuard 3
The Honeywell RAEGuard 3 Fixed Gas Detector / Transmitter provides users with safer, more stable, more reliable and more effective field transmitter, and can be applied in indoor and outdoor hazardous environments, to monitor the dangerous degree of hazardous gases in real time, so as to rapidly and effectively protect the safety of the installation site and production personnel.
RAEGuard 3 Detector is Honeywell’s masterpiece detector of toxic and flammable gas that represents advanced technology and development potential in the future. It provides users with safer, more stable, more reliable and more effective field transmitter, and can be applied in indoor and outdoor hazardous environments, to monitor the dangerous degree of hazardous gases in real time, so as to rapidly and effectively protect the safety of the installation site and production personnel.
The core of RAEGuard 3 — the sensors passed through strict selection and can ensure reliable and stable operation of the transmitter. Combustible gas detector uses catalytic sensor technology with long life (> 5 years) and high anti-poisoning.
Toxic and Oxygen detectors adopt a variety of compensatory electrochemical sensor technology, especially Oxygen detector can avoid zero-free (nitrogen) calibration. At the same time, NDIR infrared detection technology with long life, anti-poisoning and Oxygen-free NDIR infrared detection technology allows RAEGuard 3 to be used in a wider and more harsh gas detection environment.

To Your Safety
- All adopt advanced sensor technology
- Wider compensation for temperature and environmental factors keeps the instrument reliable and stable.
- Redundant design to ensure no “false alarm”
- Clear indications of status can perceive the degree of environmental hazards even at long distances.
- Optional integrated visible and sound alarm, light and sound constantly remind, alarm signal will not be ignored
- Optional built-in surge protection device to make sure outdoor installation of “worry-free”
- IP66/67
- TUV SIL2
Easy to Use
- Easy read backlit LCD with text, bar graph, digits and icons, support EN and CN
- 3 high-recognized and visible LED status indicators
- 3-wire 4-20mA current output can be fine-tuned to avoid the signal attenuation caused by wiring
- Optional HART® communications as standard for remote diagnostics/configuration
- Optional Bluetooth® for easy remote operation and maintenance via mobile app
- RS485 Modbus RTU for multi-drop networking and remote real-time monitoring
- Local or remote sensor installation options
Cost Effective
- Auto-identify sensor gas types, allow full scale range setting of toxic and Oxygen detectors
- Hot swap toxic and Oxygen sensor module on site
- Fully configurable via non-intrusive magnetic switches by single person
- Auto-inhibit during maintenance
- Simplified and reduced cost of installation
- Decreased material management
- Reduced user’s spares and training
- Minimal maintenance required
- Calibration period expiration reminder
- Alarm, STEL/TWA, fault, warning and other event reminders

Honeywell RAEGuard 3 Datasheet
Honeywell RAEGuard 3 Electrical Connection
Honeywell RAEGuard 3 Features & Specifications
- Wider compensation for temperature and environmental factors keeps the instrument reliable and stable
- Redundant design to ensure no false alarm
- Clear indications of status can perceive the degree of environmental hazards even at long distances
- Optional integrated visible and sound alarm, light and sound constantly remind, alarm signal will not be ignored
- Optional built-in surge protection device to make sure outdoor installation of worry free
- Integral mounting plate or optional rewarded backboard mount kit for easy wall or pipe mounted
- 3/4” NPT M, 1/2” NPTM/F, G3/4” M/F, G1/2” F and M20 F varied glands selectable
- Flip-up PCB block removes to give access to terminal area
- Removable plug/socket type terminal blocks for ease of wiring
Input Voltage Range | 16-32VDC (24VDC nominal) |
Max Power Consumption | Electrochemical Cells: 5.5 watts; Catalytic or NDIR: 7.5 watts |
Current Output | Completely configurable 4~20mA (source type) with optional HART® 7.2 protocol as following as default configurations of current output. 1mA Fault 2mA Inhibit (during configuration or setup) 3mA Warning 4mA~20mA Normal 22mA Overrange Note: When the current output is less than 3mA, HART communication will not work properly. |
Terminals | 5 terminals (14 terminals for use with relay output), wire diameter 0.5mm2(20AWG)to 2.5mm2(13AWG) |
Relays | 3 x 2A@30VDC. Selectable normally open or normally closed and energised/de-energised(programmable) and latch/non-latch Alarm relays default energised/non-latch. Fault relay default energised/non-latch |
Communication | RS485, Modbus RTU *Optional Bluetooth |
Construction | |
Transmitter Housing Material | Aluminum Alloy or 316 Stainless Steel |
Sensor Housing Material | 316 Stainless Steel |
Weight (Approx) | Aluminum Alloy: 3.0kg; Stainless Steel: 5.0kg |
Mounting | Integral mounting plate with 4 x mounting holes suitable for M8 to fit onto Wall or Pipe |
Entries | 2 x 3/4” NPT cable/conduit entries and 1 x M25 sensor entry. 1 x plug supplied for use for only 1 entry used. Seal to maintain IP rating |
Performance | |
Repeatability | <2% |
Response Time(T90) | Depending on the gas being detected |
Certification | |
European | ATEX: LEL/NDIR: CE2460 II 2G Ex db IIC T6 Gb Ta = -40°C to +65°C Toxic and Oxygen: CE2460 II 2G Ex db ia IIC T6 Gb Ta = -20°C to +55°C |
International | IECEx: LEL/NDIR: Ex db IIC T6 Gb Ta = -40°C to +65°C Toxic and Oxygen: Ex db ia IIC T6 Gb Ta=-20°C to +55°C |
China | LEL/NDIR: Ex d IIC T6 Gb Ex tD A21 IP66 T85°C Toxic and Oxygen: Ex d ia IIC T6 Gb Ex tD A21 IP66 T85°C CCCF, CPA |
EMC | EN50270:2015, IEC 61000-4-5 |
Performance** | IEC60079-29-1 IEC 61508 (SIL Assessment, SIL2) |
Surge Immunity | Optional Surge Protection Device, Compliance with GB/T 17626.5-2008/IEC61000-4-5:2005, Meets “Installation Class 4” |
Environmental | |
IP Rating | Toxic and Oxygen: IP66/67 LEL/NDIR: IP66 |
Operating Temperature | -40°C~+70°C |
Operating Humidity | LEL/NDIR: 0~95%RH (Non-condensing) Toxic and Oxygen: 15%~95%RH (Non-condensing) |
Operating Pressure | 90~110kPa |
Storage Conditions | -20°C~+50°C, 45-75%RH(Non-condensing), in clean air |