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SKU: RKI01-72-PAX-A

RKI GX-3R Pro Gas Confined Space Monitor with Wireless Communication

$974.17

Ships in 3 months+

Description

The RKI GX-3R Pro is the smallest and lightest multi-gas personal monitor available. Weighing only 4.58 ounces and fitting in the palm of your hand, this version pairs alkaline battery power with built-in Bluetooth wireless communication. The free iOS and Android app displays direct gas readings from the instrument on your smartphone, giving supervisors real-time visibility without radio check-ins.

This version ships with an alkaline battery pack. A version with a rechargeable Li-Ion battery and wall charger is also available.

Applications: Personal monitoring, Confined spaces, Refineries/petrochemical, Utilities, Oil and Gas, Water/wastewater, Fire services, Construction

Key Features:

Smallest & lightest 4-gas monitor (2.9" W x 2.6" H x 1.06" D, 4.58 oz)
Simultaneous detection: LEL, O2, H2S, CO (optional 5th sensor available)
Simple 2-button operation
Bluetooth communication with free iOS & Android app
Non-Compliance Indicator
3 user-adjustable alarm levels
Panic Alarm (tap instrument twice)
Man Down Alarm
Impact-resistant body
Large full-dot, auto-backlit display with auto-rotation
Stealth mode for law enforcement
Field-replaceable sensors & filters
Water and dust resistant, IP66/68 rated
3-Year Warranty

Includes:

Monitor
Alligator Clip
Protective Rubber Boot
Charger
Calibration Adapter

Remember to regularly perform bump tests. RKI recommends calibrating every 90 days.

Part Numbers:
72-PAX-A — GX-3R Pro, 4-gas, LEL/O2/combo H2S & CO with Alkaline battery pack (no 5th sensor)

Optional Accessories:
0.25 Regulator (optional)
RP-3R sample drawing pump (optional)
GX-3R Calibration Kit (optional)

For toxic sensor options, infrared sensor options, and calibration kits, please contact Customer Service at 800.829.9580.

Specification Sheet:

Frequently Asked Questions

What gases does the RKI GX-3R Pro with Alkaline battery detect?

The GX-3R Pro 72-PAX-A configuration detects four confined-space gases simultaneously: combustible gas (LEL), oxygen (O2), hydrogen sulfide (H2S), and carbon monoxide (CO). An optional fifth sensor slot is factory-available for additional toxic gas detection — call our team at 800.829.9580 for sensor options.

How does the Bluetooth wireless communication work on the GX-3R Pro?

The GX-3R Pro transmits live gas readings via Bluetooth to the free RKI app, available for both iOS and Android. Supervisors can monitor worker readings remotely without requiring radio contact. The app also supports non-compliance alerts, which notify supervisors if a worker bypasses the instrument's alarm.

How long does the alkaline battery last in the GX-3R Pro?

Battery life varies based on alarm frequency and backlight use. The alkaline pack is designed for full-shift use under normal conditions. RKI also offers an optional Li-Ion rechargeable battery pack for applications requiring extended run time. Batteries are field-replaceable without tools.

What is the IP rating of the GX-3R Pro, and can it be used in wet environments?

The GX-3R Pro carries an IP66/68 dual rating, meaning it is protected against dust ingress and can withstand temporary immersion in water. The impact-resistant body and replaceable rubber boot make it suitable for construction sites, water/wastewater facilities, and other demanding outdoor environments.

What calibration and service support does PK Safety offer for the GX-3R Pro?

PK Safety is an RKI Factory Authorized Service Center. We recommend bump testing before each use and full calibration every 90 days using a traceable 4-gas calibration mix. Our technical team can assist with calibration kit selection, field calibration questions, and instrument servicing. Call 800.829.9580 or shop calibration supplies on our site.