Description
Compact 4-Gas Detection Bundle for Confined Space Safety
The RKI Instruments GX-3R Gas Detector Bundle combines the GX-3R 4-gas monitor (LEL, O₂, H₂S and CO) with a rechargeable lithium-ion battery pack, 100-240 VAC charger, and RP-3R motorized sample draw pump supplied with a 20 ft hose and 10-inch probe. Designed for confined space entry, industrial safety monitoring, utilities, wastewater operations, construction, petrochemical facilities, and emergency response applications, the GX-3R is recognised as one of the world’s smallest and lightest 4-gas monitors while providing simultaneous monitoring of atmospheric hazards.
Key Features
Benefits
Specifications
| Brand | RKI Instruments |
| Model | GX-3R (72-RA-C) with RP-3R Pump (81-1198-20) |
| Product Type | Portable 4-Gas Monitor Bundle |
| Detected Gases | LEL, O₂, H₂S, CO |
| Sampling Method | Diffusion monitor with clip-on sample draw pump |
| Operation | 2-button operation |
| Alarm Types | Audible, visual and vibration |
| Alarm Levels | 3 user-adjustable alarm levels |
| Display | Digital LCD |
| Battery Type (GX-3R) | Rechargeable lithium-ion battery |
| Battery Runtime (GX-3R) | Approximately 25 hours |
| Dimensions (GX-3R) | 58 × 65 × 26 mm |
| Weight (GX-3R) | Approximately 100 g (3.52 oz) |
| Ingress Protection | IP66/IP68 |
| Operating Temperature | -20°C to +50°C continuous operation |
| Pump Model | RP-3R |
| Pump Power Source | 1 × AA alkaline battery |
| Pump Runtime | Up to 10 hours normal mode, up to 16 hours ECO mode |
| Hose Length Included | 20 ft |
| Probe Length Included | 10 inch |
| Pump Filters | Built-in dust and hydrophobic filters |
| Pump Connection | Quick disconnect fitting |
| Included Charger | 100-240 VAC charger |
| Individual Pack | GX-3R monitor with Li-ion battery, charger, RP-3R pump, 20 ft hose and 10 inch probe |
| Warranty | 3 years |
How to Use
- Fully charge the GX-3R using the supplied charger.
- Perform required bump testing and calibration according to site procedures.
- Attach the RP-3R pump when remote sampling is required.
- Connect the 20 ft hose and 10-inch probe.
- Sample the atmosphere before entering confined or hazardous spaces.
- Monitor readings and respond immediately to any alarm condition.
- Inspect filters, hose, probe and batteries regularly before use.
⚠️ The atmosphere of a confined space should be tested before entry, and any gas alarm condition must be treated as a potential hazard requiring immediate action according to site safety procedures.
⭐⭐⭐⭐⭐ “Compact enough to wear all day and the remote sampling setup works perfectly for tank inspections.” — Michael S.
⭐⭐⭐⭐⭐ “Easy to operate with clear alarms and a very durable build.” — Johan B.
⭐⭐⭐⭐⭐ “Excellent solution for confined space monitoring and pre-entry testing.” — Pieter K.
Frequently Asked Questions
What gases does the GX-3R monitor? It simultaneously monitors combustible gases expressed as LEL, oxygen, hydrogen sulfide, and carbon monoxide.
Can the detector be used for confined space entry? Yes. The GX-3R and RP-3R combination is designed as a solution for confined space monitoring and remote atmospheric sampling.
What is the purpose of the RP-3R pump? The RP-3R converts the detector from diffusion monitoring to sample-draw operation, allowing gas samples to be drawn from remote locations.
How long does the GX-3R battery last? The monitor provides approximately 25 hours of operation on a fully charged lithium-ion battery.
How long will the RP-3R operate? Up to 10 hours in normal mode and up to 16 hours in ECO mode using a single AA battery.
Does the pump require tools for installation? No. The RP-3R snaps onto the GX-3R and can be attached or removed without tools.
Is the monitor resistant to dust and water? Yes. The GX-3R is rated IP66/IP68.
Does the system provide multiple alarm methods? Yes. Audible, visual, and vibration alarms are provided.
Can the unit be used for remote sampling? Yes. This package includes a 20 ft hose and 10-inch probe for remote atmospheric testing.
Industries & Applications
Compliance & Certifications
When worker safety depends on accurate atmospheric monitoring, the RKI Instruments GX-3R Bundle delivers proven multi-gas detection together with remote sampling capability. Its lightweight design, long battery life, rugged construction, and confined-space-ready pump system make it an excellent choice for professional safety programmes.
