
Features
- 3 Year warranty
- Simultaneous detection of 4 gases
LEL, O2, H2S & CO - Smallest / Lightest 4 gas monitor on the market (55mm W x 64mm H x 26mm D), approx. 100 g
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Simple 2-button operation
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Alarms: audible, visual, & vibration
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3 user adjustable alarm levels
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Impact resistant body
with removable rubber boot -
Large LCD Auto-backlit display
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25 hours of operation (Lithium-ion battery)
40 hours in long-life mode -
Field replaceable sensors & filters
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Water and dust resistant design, IP68
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Non-Compliance indicator
Applications
- Confined spaces
- Hazardous material
- Refineries / petrochemical
- Personal monitoring
- Utilities
- Oil and gas
- Water / wastewater plants
- Fire services
- Pharmaceuticals
- Construction
GX-3R Four Gas Personal Monitor Overview
The GX-3R one-to-four gas personal monitor picks up where the GX-2009 left off. It’s the world’s smallest four-gas personal monitor, weighing only 100 grams, and can comfortably be worn within the worker’s breathing zone (55mm W x 64mm H x 26mm D). It simultaneously monitors and displays LEL combustibles, O2, CO (Hydrogen compensated CO also available), and H2S.
The Breathing Zone
Optional Health and Safety defines the breathing zone as a 25cm radius around the worker’s nose and mouth and requires that worker exposure air samples be collected in the breathing zone. Air sampling filters may be attached to the collar or lapel. Traditionally, this means only a single gas monitor would be small enough for a worker to wear ‘In the breathing zone practically’. Now there is a four-gas monitor smaller than many single-gas monitors.
Sensors
This instrument represents the latest evolution of gas detection technology utilising a new generation of microsensors. The LEL sensor has a unique design with two active filaments in a single sensor to increase its resistance to silicone poisoning. If one filament gets poisoned, the second filament takes over. The new O2 sensor is electrochemical and has a 5-year lifespan. H2S and CO are now available in a combo microsensor.
Non-compliance indicator
Safety supervisors will appreciate the non-compliance indicator. The instrument flashes its 3 LED lights every 30 seconds, if the device has been exposed to a gas, has not been bump tested, or calibration is due. The 3 LED lights will continue to flash once every 30 seconds until the non-compliance condition has been resolved.
GX-3R Four Gas Personal Monitor Specifications
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Gas Detected |
All Combustible gases (Methane as standard) |
Oxygen (O2) |
Hydrogen Sulphide (H2S) |
Carbon Monoxide (CO) |
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Detection Range (Increments) |
0 – 100% LEL (1% LEL) |
0 – 25.0% Vol (0.1% Vol) |
0 – 100 ppm (0.5 ppm) |
0 – 500 ppm (1 ppm) |
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Sampling Method |
Diffusion sampling, hand aspirator or motorised pump optional |
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Display |
Digital LCD displays with 7 segment plus 14 segment plus icon |
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Present Alarms (User Adjustable) |
1st alarm 5% LEL 2nd alarm 10% LEL Over alarm 100% LEL |
Low alarm 19.5% High alarm 23.5% Over alarm 40.0% |
1st alarm 10 ppm 2nd alarm 15 ppm TWA alarm 10 ppm STEL alarm 15 ppm Over alarm 200 ppm |
1st alarm 30 ppm 2nd alarm 60 ppm TWA alarm 30 ppm STEL alarm 60 ppm Over alarm 2000 ppm |
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Types of Alarms |
Gas Alarm: Trouble Alarm: 2 Increasing alarms, STEL, TWA, overscale alarm. O2 decreasing/increasing. Sensor disconnection, low battery, circuit error, calibration range error |
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Display of Alarms |
Gas Alarm: Trouble Alarm: Flashing LEDs, continuous buzzer (100 db @ 30 cm), flashing gas value, vibration Flashing LEDs, intermittent buzzer (95 db @ 30 cm), display of error message |
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Operating Temp & Humidity |
40°C to +60°C, 0 to 95% RH, non-condensing (splash resistant) |
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Response Time |
Within 30 seconds (T90) |
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Continuous Operation |
25 hours after a full 3 hour charge |
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Power Source |
Lithium-ion battery |
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Safety Design/Approvals |
Ex da ia IIC T4 Ga or EX ia IIC T4 Ga and EX da ia I MA or EX ia I Ma (IECEx) / I M1Ex da ia I Ma//II 1G Ex da ia IICT4 Ga (ATEX) |
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Dimension & Weight |
Approx 55mm (H) x 64mm (W) x 26mm (D), approx 100g |
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Case Material |
Explosion proof, dust and water resistant to IP-68 (2m,1h) approval. Drop height 7m |
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Controls |
Two buttons: POWER / MODE, AIR |
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Datalogging |
Logs user ID, station ID, Calibration & Bump Test history, Alarm Events & Alarm Trends |
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Standard Accessories |
Alligator clip Charger Calibration cup |
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Optional Accessories |
Padded carrying case for GX-3R and accessories RP-3R Attachable sampling Pump with tapered rubber nipple, 3m hose and probe (up to 12m hose available) USB to IrDA downloading cable for datalogger SDM-3R calibration station Calibration Cup |
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Warranty |
Three years material and workmanship |
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GX-3R Four Gas personal monitor Videos:
GX-3R
GX-3R Intro Features
GX-3R Startup
GX-3R Accessories
GX-3R Attach Remove Calibration Adaptor
GX-3R IP-68 Rating
- Overview
-
GX-3R Four Gas Personal Monitor Overview
The GX-3R one-to-four gas personal monitor picks up where the GX-2009 left off. It’s the world’s smallest four-gas personal monitor, weighing only 100 grams, and can comfortably be worn within the worker’s breathing zone (55mm W x 64mm H x 26mm D). It simultaneously monitors and displays LEL combustibles, O2, CO (Hydrogen compensated CO also available), and H2S.
The Breathing Zone
Optional Health and Safety defines the breathing zone as a 25cm radius around the worker’s nose and mouth and requires that worker exposure air samples be collected in the breathing zone. Air sampling filters may be attached to the collar or lapel. Traditionally, this means only a single gas monitor would be small enough for a worker to wear ‘In the breathing zone practically’. Now there is a four-gas monitor smaller than many single-gas monitors.
Sensors
This instrument represents the latest evolution of gas detection technology utilising a new generation of microsensors. The LEL sensor has a unique design with two active filaments in a single sensor to increase its resistance to silicone poisoning. If one filament gets poisoned, the second filament takes over. The new O2 sensor is electrochemical and has a 5-year lifespan. H2S and CO are now available in a combo microsensor.
Non-compliance indicator
Safety supervisors will appreciate the non-compliance indicator. The instrument flashes its 3 LED lights every 30 seconds, if the device has been exposed to a gas, has not been bump tested, or calibration is due. The 3 LED lights will continue to flash once every 30 seconds until the non-compliance condition has been resolved.
- Specifications
-
GX-3R Four Gas Personal Monitor Specifications
Gas Detected
All Combustible gases (Methane as standard)
Oxygen (O2)
Hydrogen Sulphide (H2S)
Carbon Monoxide (CO)
Detection Range (Increments)
0 – 100% LEL
(1% LEL)
0 – 25.0% Vol (0.1% Vol)
0 – 100 ppm
(0.5 ppm)
0 – 500 ppm
(1 ppm)
Sampling Method
Diffusion sampling, hand aspirator or motorised pump optional
Display
Digital LCD displays with 7 segment plus 14 segment plus icon
Present Alarms (User Adjustable)
1st alarm 5% LEL 2nd alarm 10% LEL
Over alarm 100% LEL
Low alarm 19.5% High alarm 23.5% Over alarm 40.0%
1st alarm 10 ppm 2nd alarm 15 ppm TWA alarm 10 ppm STEL alarm 15 ppm
Over alarm 200 ppm
1st alarm 30 ppm 2nd alarm 60 ppm TWA alarm 30 ppm STEL alarm 60 ppm Over alarm 2000 ppm
Types of Alarms
Gas Alarm: Trouble Alarm: 2 Increasing alarms, STEL, TWA, overscale alarm. O2 decreasing/increasing. Sensor disconnection, low battery, circuit error, calibration range error
Display of Alarms
Gas Alarm: Trouble Alarm: Flashing LEDs, continuous buzzer (100 db @ 30 cm), flashing gas value, vibration Flashing LEDs, intermittent buzzer (95 db @ 30 cm), display of error message
Operating Temp & Humidity
40°C to +60°C, 0 to 95% RH, non-condensing (splash resistant)
Response Time
Within 30 seconds (T90)
Continuous Operation
25 hours after a full 3 hour charge
Power Source
Lithium-ion battery
Safety Design/Approvals
Ex da ia IIC T4 Ga or EX ia IIC T4 Ga and EX da ia I MA or EX ia I Ma (IECEx) / I M1Ex da ia I Ma//II 1G Ex da ia IICT4 Ga (ATEX)
Dimension & Weight
Approx 55mm (H) x 64mm (W) x 26mm (D), approx 100g
Case Material
Explosion proof, dust and water resistant to IP-68 (2m,1h) approval. Drop height 7m
Controls
Two buttons: POWER / MODE, AIR
Datalogging
Logs user ID, station ID, Calibration & Bump Test history, Alarm Events & Alarm Trends
Standard Accessories
Alligator clip
Charger
Calibration cup
Optional Accessories
Padded carrying case for GX-3R and accessories RP-3R Attachable sampling Pump with tapered rubber nipple, 3m hose and probe (up to 12m hose available) USB to IrDA downloading cable for datalogger SDM-3R calibration station Calibration Cup
Warranty
Three years material and workmanship
- Downloads
- Videos
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GX-3R Four Gas personal monitor Videos:
GX-3R
GX-3R Intro Features
GX-3R Startup
GX-3R Accessories
GX-3R Attach Remove Calibration Adaptor
GX-3R IP-68 Rating
- Accessories
Enquire Now















