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To order parts and accessories CLICK HERE

Calibration Stations also available CLICK HERE



The GX-3R Pro is the worlds smallest 5 gas monitor weighing only 4.58 ounces and fits in the palm of your hand (2.9” W x 2.6” H x 1.06” D). It simultaneously monitors and displays 5 different gases. In addition to monitoring standard confined space gases, LEL, O2, CO, & H2S, the GX-3R Pro has a 5th channel where you can add ppm or % volume CO2 as well as a full line of toxic gases including SO2, HCN, NO2, NH3 and Cl2. An H2 compensated carbon monoxide sensor is also available. Two of the four sensor slots have interchangeable sensors providing flexible configurations, which can easily be changed in the field.The GX-3R Pro comes equipped with Bluetooth wireless communication, man-down alarm, the choice of alkaline or rechargeable power supply, and a 3-year warranty. The Lithium-ion battery pack will operate for 25 hours and will fully charge in 3 hours.The GX-3R Pro utilizes Bluetooth communication to display direct gas readings from the instrument to a phone app, which is available free on either iOS or Android phones. Automatic notifications can be programmed to send text or email messages, if there is an alarm event from the GX-3R Pro.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.



• Personal monitoring

• Confined spaces

• Refineries/petrochemical

• Utilities• Oil and Gas

• Water/wastewater

• Fire services

• Construction

To order parts and accessories CLICK HERE

Calibration Stations also available CLICK HERE

RKI Model GX-3R Pro (1-5) Gas Personal Monitor

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