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Gas Detection for Life

The GX-3R is the worlds smallest 4 gas monitor weighing only 3.52 ounces and can comfortably be clipped within a worker's breathing zone (2.2" W x 2.55" H x 1.02" D). It simultaneously monitors and displays LEL combustibles, O2, CO (Hydrogen compensated CO also available), and H2S.
Unit of Measure

Brands

 N/A RKI Instruments

Gas Detected

 N/A Carbon Monoxide (CO) Combustible Gases (Methane as Standard) H2 Compensated Hydrogen Sulfide (H2S) Oxygen (O2)

Sampling Methods

 N/A Diffusion Sampling Standard (Hand Aspirator or Clip-on Motorized Pump Optional)

Overscale Alarm for Carbon Monoxide (CO) (Non-Adjustable)

 N/A Over Alarm: 2000.0 ppm

Overscale Alarm for Hydrogen Sulfide (H2S) (Non-Adjustable)

 N/A Over Alarm: 200.0 ppm

Overscale Alarm for Combustible Gases (Non-Adjustable)

 N/A Over Alarm: 100% Lower Explosive Limit (LEL)

Overscale Alarm Oxygen (O2) (Non-Adjustable)

 N/A Over Alarm: 40.0%

Operating Temperature (Continuous Environment)

 N/A -20 to 50 ºC-4 to 122 ºF

Operating Relative Humidity (RH) Range (Continuous Environment)

 N/A 10 to 90 %

Operating Temperature (Temporary Environment, 15 Minutes)

 N/A -40 to 60 ºC-40 to 140 ºF

Operating Relative Humidity (RH) Range (Temporary Environment, 15 Minutes)

 N/A 0 to 95 %

Response Time

 N/A Within 30 seconds (T90)

Power Source

 N/A Lithium-ion battery, Approx. 25 hours after a 3 hour full charge

Approvals

 N/A ATmosphere Explosible (ATEX) Canadian Standards Association (CSA)

Case Material

 N/A Explosion proof, dust and water resistant to IP-66/68 (2m,1h) approval. Drop height 23 ft

Controls

 N/A Two buttons: POWER / MODE, AIR

Material Warranty

 N/A 3 year

Workmanship Warranty

 N/A 3 year

Data Logging

 N/A Alarm Events and Alarm Interval Trends Calibration and Bump Test History Logs User ID Station ID

Package Type

 N/A Each

Units Per Package

 N/A 1

Sensor Slot for Carbon Monoxide (CO) and Hydrogen Sulfide (H2S) Dual Sensor

 N/A 1

Sensor Slot for Combustible Gases and Hydrogen Sulfide (H2S)

 N/A 2

Sensor Slot for Oxygen (O2)

 N/A 3

Detection Principle for Carbon Monoxide (CO) Hydrogen (H2) Compensated

 N/A Electrochemical (EC)

Detection Principle for Carbon Monoxide (CO) and Hydrogen Sulfide (H2S) Dual Sensor

 N/A Dual Electrochemical (EC)

Detection Principle for Hydrogen Sulfide (H2S) Only

 N/A Electrochemical (EC)

Detection Principle for Combustible Gases (Methane as standard)

 N/A Catalytic Combustion

Detection Principle for Oxygen (O2)

 N/A Electrochemical (EC) Cell

Carbon Monoxide (CO) Hydrogen (H2) Compensated and Dual Sensor Detection Range

 N/A 0 to 2000 ppm

Carbon Monoxide (CO) Hydrogen (H2) Compensated and Dual Sensor Detection Range Increments

 N/A 1 ppm

Hydrogen Sulfide (H2S) Dual Sensor Detection Range

 N/A 0 to 200.0 ppm

Hydrogen Sulfide (H2S) Dual Sensor Detection Range Increments

 N/A 0.1 ppm

Combustible Gases Detection Range

 N/A 0 to 100 % Lower Explosive Limit (LEL)

Combustible Gases Detection Range Increments

 N/A 1 % Lower Explosive Limit (LEL)

Oxygen (O2) Detection Range

 N/A 0 to 40.0 % Vol

Oxygen (O2) Detection Range Increments

 N/A 0.1 %

Accuracy Statement for Carbon Monoxide (CO) (±)

 N/A 2 ppm Carbon Monoxide (CO) 5% of Reading

Accuracy Statement for Carbon Monoxide (CO) with Dual Sensor (± )

 N/A 5 ppm Carbon Monoxide (CO) 5% of Reading

Accuracy Statement for Hydrogen Sulfide(H2S) with Dual Sensor (±)

 N/A 2 ppm Hydrogen Sulfide(H2S) 5% of Reading

Accuracy Statement for Hydrogen Sulfide(H2S) (±)

 N/A 2 ppm Hydrogen Sulfide(H2S) 5% of Reading

Accuracy Statement for Combustible Gases (±)

 N/A 2% Lower Explosive Limit (LEL) 5% of Reading

Accuracy Statement for Oxygen (O2) (±)

 N/A 0.5% Oxygen (O2)

Note for Accuracy Statement

 N/A Whichever is Greater

Display

 N/A Digital Liquid-Crystal Display (LCD) Displays with 7 Segment Plus 14 Segment Plus Icon

Preset Alarms for Carbon Monoxide (CO) (User Adjustable)

 N/A 1st Alarm: 25.0 ppm2nd Alarm: 50.0 ppm3rd Alarm: 1200.0 ppmSTEL Alarm: 200.0 ppmTWA Alarm: 25.0 ppm

Preset Alarms for Hydrogen Sulfide (H2S) (User Adjustable)

 N/A 1st Alarm: 5.0 ppm2nd Alarm: 30.0 ppm3rd Alarm: 100.0 ppmSTEL Alarm: 5.0 ppmTWA Alarm: 1.0 ppm

Preset Alarms for Combustible Gases (User Adjustable)

 N/A 1st Alarm: 10% Lower Explosive Limit (LEL) 2nd Alarm: 25% Lower Explosive Limit (LEL) 3rd Alarm: 50% Lower Explosive Limit (LEL)

Preset Alarms for Oxygen (O2) (User Adjustable)

 N/A High Alarm: 23.5% Low 1 Alarm: 19.5% Low 2 Alarm: 18.0%

Gas Alarm Type

 N/A 3 Increasing Alarms O2 Decreasing/Increasing Overscale alarm Short Term Exposure Limit (STEL) Time Weighted Average (TWA)

Trouble Alarm Type

 N/A Calibration Range Error Circuit Error Low Battery Sensor Disconnection

Gas Alarm Display

 N/A Continuous Buzzer (100 db at 30 cm) Flashing Gas Value Flashing Light-Emitting Diode (LED) Vibration

Trouble Alarm Display

 N/A Display of error message Flashing Light-Emitting Diode (LED) Intermittent Buzzer (95 db at 30 cm)

Width without Rubber Boot

 N/A 2.2 in58 mm

Height without Rubber Boot

 N/A 2.55 in65 mm

Depth without Rubber Boot

 N/A 1.02 in26 mm

Weight without Rubber Boot

 N/A 3.52 oz100 g

Width with Rubber Boot

 N/A 2.4 in61 mm

Height with Rubber Boot

 N/A 2.63 in67 mm

Depth with Rubber Boot

 N/A 1.06 in27 mm

Weight with Rubber Boot

 N/A 3.70 oz105 g

N/A Alligator Clip Calibration Adapter Charger Protective Rubber Boot

N/A

  • Padded Carrying Case for GX-3R and Accessories
  • RP-3R Clip-on sampling pump with 4 Inch (in) rubber nipple, 10 Feet (ft) hose and probe (up to 40 Feet (ft) hose available)
  • SDM-3R Calibration Station
  • USB to IrDA Downloading Cable for Data logger
SDM-3R Calibration Station
  • Charge, calibrate, bump test, and alarm test
  • Automatically schedule calibrations & bump test
  • Fast bump mode uses less calibration gas
  • Ethernet and USB output connections
  • Bank up to 10 units with tubeless connection

N/A

  • Smallest and lightest 4 gas monitor
  • Simultaneous detection of 4 gases
    • LEL, O2, H2S & CO
    • H2 Compensated CO sensor available
  • Simple 2-button operation
  • Non-Compliance Indicator
  • Alarms: audible, visual, and vibration
  • 3 user adjustable alarm levels
  • Impact resistant body with removable rubber boot
  • Large LCD Auto-backlit display
  • 25 hours of operation (Lithium-ion battery)
  • Field replaceable sensors & filters
  • Water and dust resistant design, IP66/68
  • Stealth mode for law enforcement

N/A

  • Personal monitoring
  • Confined spaces
  • Refineries/petrochemical
  • Utilities
  • Oil and Gas
  • Water/wastewater
  • Fire services
  • Construction

N/A OSHA defines the breathing zone as a ten inch radius around the worker's nose and mouth, and requires that worker exposure monitoring 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 practically wear a gas monitor 'In the breathing zone'. Now there is a 4 gas monitor smaller than many single gas monitors.

The GX-3R represents the latest evolution of gas detection technology utilizing a new generation of micro sensors. The LEL sensor has a unique design with two active filaments in one sensor to increase it's resistance to silicone poisoning. If one filament gets poisoned the second filament takes over. The new O2 sensor is electrochemical with a 3 to 5 year life span. H2S and CO are now available in a combo micro sensor.

Safety supervisors will appreciate the non-compliance indicator. The instrument flashes it's 3 LED lights every 30 seconds in the following conditions; if the instrument has not been bump tested, or if calibration is due, or if there was a gas alarm event. The 3 LED lights will continue to flash once every 30 seconds until the non-compliance condition has been resolved. The 30 second interval is adjustable.