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