RKI GX-3R Portable Multi-Gas Monitor

RKI Instruments

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Was: $640.00
Now: $512.00
The image showcases the RKI Instruments GX-3R, the world's smallest and lightest 4-gas monitor, weighing only 3.52 ounces. This compact device simultaneously detects combustible gases (LEL), oxygen (O₂), carbon monoxide (CO), and hydrogen sulfide (H₂S), making it ideal for confined space monitoring. Its durable design features IP66/68-rated water and dust resistance, ensuring reliable performance in harsh environments. The GX-3R offers user-friendly two-button operation and provides audible, visual, and vibration alarms for immediate hazard notification. With a battery life of up to 25 hours, it's suitable for extended field use. This gas detector is essential for industries such as oil and gas, chemical plants, utilities, and construction, where worker safety is paramount.
SKU:
72-RA-C
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Product Overview

Overview

The RKI GX-3R is an ultra-compact, lightweight portable gas monitor designed for personal protection and confined-space applications. Depending on the selected sensor configuration, the GX-3R can simultaneously monitor up to four gases, including combustible gases (LEL), oxygen (O₂), hydrogen sulfide (H₂S), and carbon monoxide (CO).

Its compact design allows the GX-3R to be comfortably worn within the worker's breathing zone while providing audible, visual, and vibration alarms. Multiple sensor configurations are available, including an H₂-compensated CO sensor option for applications where hydrogen interference may be a concern.

Common Applications:
Confined Spaces • Personal Monitoring • Refineries & Petrochemical • Oil & Gas • Utilities • Water & Wastewater • Fire Services • Construction

Need help choosing the right GX-3R configuration?
Call CPS Calibrations at 865-900-8844 or email info@cpscalibrations.com.

Features

  • Ultra-compact and lightweight design
  • Simultaneously monitors up to four gases
  • Available for LEL, O₂, H₂S and CO
  • H₂-compensated CO sensor configuration available
  • Simple 2-button operation
  • Large auto-backlit LCD display
  • Audible, visual and vibration alarms
  • Three user-adjustable alarm levels
  • Non-compliance indicator
  • Approximately 25 hours of operation per charge
  • Rechargeable lithium-ion battery
  • Field-replaceable sensors and filters
  • Impact-resistant removable rubber boot
  • Water- and dust-resistant IP66/68 design
  • Optional clip-on sampling pump available
  • 3-year warranty

Specifications

Sampling Method Diffusion standard; optional hand aspirator or clip-on motorized pump
Combustible Gas (LEL) 0–100% LEL, 1% LEL increments
Oxygen (O₂) 0–40.0% Vol., 0.1% increments
Hydrogen Sulfide (H₂S) 0–200.0 ppm, 0.1 ppm increments
Carbon Monoxide (CO) 0–2,000 ppm, 1 ppm increments
Response Time T90 within 30 seconds
Display Digital LCD with auto backlight
Alarms Audible, visual and vibration
Audible Alarm Up to 100 dB @ 30 cm
Operating Temperature -4°F to +122°F continuous
Operating Humidity 10–90% RH, non-condensing
Battery Rechargeable lithium-ion
Battery Runtime Approximately 25 hours
Charge Time Approximately 3 hours
Ingress Protection IP66/68
Dimensions with Boot 2.4" W × 2.63" H × 1.06" D
Weight with Boot Approximately 3.70 oz
Controls 2-button operation
Warranty 3 years, material and workmanship

What's Included

  • GX-3R Gas Monitor
  • Protective Rubber Boot
  • Alligator Clip
  • Calibration Adapter
  • Selected Charging Configuration

Warranty Information

Three years material and workmanship

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