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SKU: RKI01-72-PAX-C

RKI GX-3R Pro 5 Gas Confined Space Monitor with Wireless Communication

$1,200.50

Ships in 3 months+

5th Sensor

Product variants

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Description

RKI GX-3R Pro 5 Gas Confined Space Monitor with Wireless Communication is the smallest and lightest 5-gas personal monitor. Weighing only 4.58 ounces, it fits in the palm of your hand. In addition to the four confined space gases (CO, H2S, LEL, O2) the GX-3R Pro has a 5th channel for toxic and infrared sensors. The GX-3R Pro comes equipped with Bluetooth wireless communication to display direct gas readings on a free iOS or Android app.

This version includes a rechargeable Li-ion battery pack and 120V wall charger. An alkaline battery version is also available.

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

Key Features:

Smallest & lightest 5 gas monitor (2.9" W x 2.6" H x 1.06" D, 4.58 ounces)
Simultaneous detection of 5 gases (LEL, O2, H2S, CO, and optional 5th sensor)
- Confined Space Gases: LEL, O2, H2S, CO
- Toxic/IR Gases: HCN, NO2, SO2, CO2, NH3
- H2 Compensated CO sensor available
Simple 2-button operation
Bluetooth communication with 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 design, IP66/68
ATEX/CSA Approval
3 Year Warranty

Standard Accessories Included:

Alligator clip
Protective Rubber Boot
Charger
Calibration adapter

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

Brochure:

Specification Sheet:

Optional Accessory: Calibration Kit, 0.25 Regulator

Part Numbers:
72-PAX-C GX-3R Pro, 4 gas, LEL/O2/combo H2S & CO with Li-Ion battery & 100-240 VAC charger (no 5th sensor)
72-PAA-C GX-3R Pro, 5 gas, LEL/O2/combo H2S & CO/ppm CO2 with 100-240 VAC charger
72-PAB-C GX-3R Pro, 5 gas, LEL/O2/combo H2S & CO/% CO2 with 100-240 VAC charger
72-PAD-C GX-3R Pro, 5 gas, LEL/O2/combo H2S & CO/NO2 20.0 ppm with 100-240 VAC charger
72-PAE-C GX-3R Pro, 5 gas, LEL/O2/combo H2S & CO/HCN 30.0 ppm with 100-240 VAC charger
72-PAG-C GX-3R Pro, 5 gas, LEL/O2/combo H2S & CO/NH3 400 ppm with 100-240 VAC charger
Contact PK Safety at 800.829.9580 for toxic/infrared sensor options and calibration kits.

Frequently Asked Questions

What gases does the RKI GX-3R Pro monitor simultaneously?

The GX-3R Pro monitors four standard confined space gases—LEL, O2, H2S, and CO—simultaneously, plus a configurable 5th channel. The 5th channel accepts toxic or infrared sensors for HCN, NO2, SO2, CO2, or NH3, and an H2-compensated CO sensor is also available. Contact PK Safety at 800.829.9580 for configuration options.

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

The GX-3R Pro pairs with a free iOS or Android app via Bluetooth, transmitting live gas readings from the instrument display to a supervisor's phone or tablet. Safety managers can monitor multiple workers' exposures in real time without requiring workers to read their own instruments—useful for confined space attendants stationed outside the entry point.

What is the man-down alarm on the GX-3R Pro?

The man-down alarm activates automatically if the instrument remains motionless beyond a preset time threshold, indicating a worker may be incapacitated. A panic alarm can also be triggered manually by tapping the instrument twice rapidly. Both alarms generate audible, visual, and vibration alerts—and transmit over Bluetooth if a phone connection is active.

What calibration schedule does RKI recommend for the GX-3R Pro?

RKI recommends calibrating the GX-3R Pro every 90 days and performing a bump test before each shift. Bump testing confirms the sensors respond to gas without conducting a full calibration. The SDM-3R docking station automates both processes, logging results automatically so compliance records are always current.

Who services the RKI GX-3R Pro?

PK Safety is an RKI Factory Authorized Service Center—one of the few distributors in the country qualified to perform in-warranty and out-of-warranty repairs on the GX-3R Pro. We stock replacement sensors, battery packs, and accessories. Contact us at 800.829.9580 for service inquiries.