ENVIRONMENTAL SAMPLING EQUIPMENT

RKI GX-3R Pro Gas Detector
RKI GX-3R Pro sensor callout diagram

RKI GX-3R Pro Gas Detector

The RKI GX-3R Pro is the world's smallest 5-gas monitor, built around four sensor slots: an interchangeable CO/H2S combo or single-gas cell, catalytic LEL, electrochemical O2, and a 5th channel for HCN, NH3, NO2, PH3, SO2, or IR CO2. RKI offers dozens of factory-built sensor combinations — the configurations listed here cover the most common confined-space and toxic-gas pairings; other sensor combinations are available by quote.

Battery runtime ranges from about 16 to 25 hours on lithium-ion depending on sensor configuration (3-hour recharge), with alkaline as a backup option. The full-dot LCD auto-rotates and backlights, Bluetooth BLE connects to RKI's mobile app for cal/bump tracking, and the IP-66/68-rated housing carries ATEX, CSA, IECEx, and MED certification with a 23-foot drop rating. Man-down and panic alarms are standard alongside the usual multi-level gas alarms.

  • World's smallest 5-gas monitor with 4 interchangeable sensor slots
  • 5th channel supports HCN, NH3, NO2, PH3, SO2, or IR CO2
  • Bluetooth BLE connects to RKI's mobile app for cal/bump tracking
  • Full-dot auto-rotating, backlit LCD display
  • Li-ion battery, 16-25 hour runtime depending on config (3-hr charge)
  • IP-66/68 rated, 23-foot drop rating, ATEX/CSA/IECEx/MED certified
  • Personal gas monitoring for confined space entry
  • Refinery and petrochemical facility safety monitoring
  • Utility and oil & gas field personal protection
  • Water and wastewater treatment plant safety
  • Fire service and hazmat response
  • Construction site gas monitoring

Regular price$720.30
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