RKI GX3R 4 Gas Monitor — LEL, O2, H2S, CO (Factory Calibrated)

RKI GX3R 4 Gas Monitor — Compact Wearable LEL, O2, H2S & CO

The RKI GX3R 4 gas monitor is one of the smallest wearable four-gas instruments available — a personal gas detector reading LEL, O2, H2S and CO that ships factory-calibrated with a certificate, for workers who want full coverage in the lightest possible body.

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The RKI GX3R is a compact, rechargeable wearable four-gas monitor (LEL, O2, H2S, CO) that ships factory-calibrated with a calibration certificate and includes datalogging.

Key features

• Compact, lightweight wearable reading LEL, O2, H2S and CO — one of the smallest 4-gas monitors
• Ships factory-calibrated with a calibration certificate
• Rechargeable Li-ion battery for full-shift use
• Visual, audible and vibration alarms
• Includes a carry bag and certificate out of the box
• RKI Instruments build with warranty support

Specifications

Where the RKI GX3R fits

• Confined-space entry
• Utilities and field service
• Oil-and-gas spot monitoring
• Industrial maintenance
• Crews wanting the smallest wearable 4-gas

What the RKI GX3R detects (and what it doesn’t)

It detects LEL combustibles, O2, H2S and CO — the confined-space set. It does not read VOCs, CO2 or specific toxics; those need a PID or dedicated sensor. It is diffusion, so pre-entry sampling needs a Portable Gas Detectors pump instrument. Among wearables, compare it with the serviceable BW GasAlertMicroClip XL and the sealed BW Clip4. It ships factory-calibrated; bump-test before use and recalibrate on schedule.

Cross-shopping? This unit sits in our Personal & Wearable Gas Detectors hub alongside Honeywell BW Clip H2S, Honeywell BW Clip CO, Honeywell BW Clip O2, TopTes CT-580 CO. For other gas-detection form factors see Portable Gas Detectors, Fixed Gas Detection Systems, Area & Transportable Gas Monitors, or browse the full Gas Detectors range.

Where the RKI GX3R fits among wearable 4-gas monitors

The GX3R is RKI’s ultra-compact wearable four-gas, shipped factory-calibrated with a certificate. Against the Honeywell BW wearables, it emphasises small size; the GasAlertMicroClip XL emphasises datalogging and docking automation, while the BW Clip4 is sealed and 2-year maintenance-free.

• Choose the RKI GX3R for the smallest, lightest wearable 4-gas with a calibration certificate in the box.
• Pick the GasAlertMicroClip XL for datalogging and docking automation.
• Pick the BW Clip4 for sealed 2-year zero-maintenance operation.

Frequently asked questions

What gases does the RKI GX3R detect?

LEL combustibles, O2, H2S and CO — the confined-space four-gas set. For VOCs you need a PID; see the Gas Detectors range.

Does the GX3R come calibrated?

Yes — it ships factory-calibrated with a calibration certificate, plus a carry bag. Bump-test before use and recalibrate on schedule.

Why choose the GX3R over other wearables?

Size — it is one of the smallest and lightest four-gas monitors, which makes all-day wear more comfortable while still covering all four gases.

Is the RKI GX3R rechargeable?

Yes — it uses a rechargeable Li-ion battery sized for full-shift use; recharge between shifts.

How does it compare to the BW GasAlertMicroClip XL?

Both are serviceable rechargeable 4-gas wearables; the GX3R is smaller, while the MicroClip XL is a longer-established platform with broad docking support.

Is it good for confined-space entry?

Yes for personal monitoring. Pre-entry sampling of a sealed space still requires a Portable Gas Detectors pump instrument.

Does it log data?

Yes — it includes datalogging for compliance records, downloadable per RKI's software/dock.

Does it have a pump?

This is the diffusion model. For remote sample-draw before entry, use a pump-equipped Portable Gas Detectors monitor.

What alarms does it have?

Visual, audible and vibration alarms trigger when any of the four gases exceeds its set point.

What does it not detect?

VOCs, CO2 and specific toxics like chlorine or ammonia are outside its range; use a PID or dedicated sensor for those.

Is it in stock and how does it ship?

Use the Amazon buy button for live availability and delivery timing through our fulfillment partner.

Does it include a warranty?

The listing notes factory calibration and warranty support from RKI; confirm current warranty terms with the manufacturer for your purchase.