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Riken Keiki GX-3R Multigas Detector

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.

Application

  • Personal monitoring
  • Confined spaces
  • Refineries/petrochemical
  • Utilities
  • Hazardous material
  • Water/wastewater
  • Fire services
  • Construction
Gas Detected (CO) H2 Compensated H2S Only Combustible Gases (Methane as standard) Oxygen
Carbon Monoxide (CO) Hydrogen Sulfide (H2S)
Sensor Slot 1 1 2 3
Detection Principle Dual EC EC Catalytic combustion EC
Detection Range (Increments) 0 ~ 2,000 ppm (1 ppm) 0 ~ 200.0 ppm (0.1 ppm) 0 ~ 200.0 ppm (0.1 ppm) 0 ~ 100% LEL (1% LEL) 0 ~ 40% Vol. (0.1%)
Accuracy Statement ± 5% of reading or ± 2 ppm ± 5% of reading or ± 5 ppm CO (whichever is greater) ± 5% of reading or ± 2 ppm H2S (whichever is greater) ± 5% of reading or ± 2% ± 0.5% of reading O2
CO is greater LEL (whichever is greater)
Preset Alarms
(User Adjustable)
Overscale alarm
(Non-adjustable)		 1st alarm: 25.0 ppm
2nd alarm: 50.0 ppm
3rd alarm: 1200.0 ppm
TWA alarm: 25.0 ppm
STEL alarm: 200.0 ppm
Over alarm: 2000.0 ppm 		1st alarm: 5.0 ppm
2nd alarm: 30.0 ppm
3rd alarm: 100.0 ppm
TWA alarm: 1.0 ppm
STEL alarm: 5.0 ppm
Over alarm: 200.0 ppm 		1st alarm: 10% LEL
2nd alarm: 25% LEL
3rd alarm: 50% LEL
Over alarm: 100% LEL

Product Specifications

Type Parameter
Types of Alarms
  • Gas Alarm: 3 Increasing alarms, STEL, TWA, overscale alarm. O2 decreasing/increasing. Trouble alarm: Sensor disconnection, low battery, circuit error, calibration range error
Display of Alarm
  • Gas Alarm: Flashing LEDs, continuous buzzer (100 db @ 30 cm), flashing gas value, vibration Trouble alarm: Flashing LEDs, intermittent buzzer (95 db @ 30 cm), display of error message
Operating Temp. & Humidity
  • -20°C ~ +50°C [ -4°F ~ +122°F ], 10 to 90% RH, non-condensing (continuous environment) -40°C ~ +60°C [ -40°F ~ +140°F ], 0 to 95% RH, non-condensing (temporary environment, 15 minutes)
Response Time
  • Within 30 seconds (T90)
Power Source
  • Lithium-ion battery, Approx. 25 hours after a 3 hour full charge
Approvals
  • ATEX, CSA, IECEx, MED
Dimension & Weight
  • 2.2” W x 2.55” H x 1.02” D (Approx. 58 W x 65 H x 26 D mm), 3.52 ounces (approx. 100 g) without rubber booth 2.4” W x 2.63” H x 1.06” D (Approx. 61 W x 67 H x 27 D mm), 3.70 ounces (approx. 105 g) with rubber booth
Case Material
  • Dust and water resistant to IP-66/68 (2m,1h) approval. Drop height 23 ft
Controls
  • Two buttons: POWER / MODE, AIR
Datalogging
  • Logs user ID, station ID, Calibration & Bump Test history, Alarm Events & Alarm Interval Trends
Standard Accessories
  • Alligator clip, protective rubber boot, charger, and calibration adapter
Optional Accessories
  • SDM-3R calibration station RP-3R Clip-on sampling pump with 4” rubber nipple, 10’ hose and probe (up to 40’ hose available) Padded carrying case for GX-3R and accessories USB to IrDA downloading cable for datalogger
Warranty
  • Three years material and workmanship
Sampling Method
  • Diffusion sampling standard (hand aspirator or clip-on motorized pump optional)
Display
  • Digital LCD displays with 7 segment plus 14 segment plus icon

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