The GX-Force Sample Draw 4 Gas Monitor from RKI is a compact, powerful, and reliable solution for confined space and personal gas monitoring. At just 9.8 ounces, it is RKI’s smallest personal 1–4 gas monitor, yet it comes equipped with a strong internal sample pump capable of drawing samples from up to 100 feet away.
Built around advanced micro-sensor technology, the GX-Force combines portability with accuracy, making it a trusted tool across industries like oil and gas, utilities, construction, and emergency response.
Key Benefits
- Compact and Lightweight – Weighs only 9.8 ounces for comfortable wear and easy portability.
- Powerful Sample Pump – Internal pump with a 100’ sampling range, ideal for hard-to-reach locations.
- Versatile Gas Monitoring – Detects the standard confined space gases:
- LEL combustibles
- Oxygen (O₂)
- Carbon Monoxide (CO)
- Hydrogen Sulfide (H₂S)
- Instrument Compatibility – Shares sensor compatibility with GX-3R, GX-3R Pro, 04 Series, and Gaswatch 3 instruments.
- Dual Operating Modes – Normal Operation for confined space safety monitoring, and Leak Check Mode for ppm-level combustible leak detection.
- Long Battery Life – Operates up to 30 hours on a rechargeable Li-ion battery.
- Clear LCD Display – Large, backlit display shows gas readings, battery status, time, and alarms.
- Multiple Alarms – Audible, visual, and vibration alarms (latching or non-latching options).
- Continuous Self-Diagnostics – Monitors sensor connections, flow rates, calibration, and battery to ensure reliability.
- Flexible Calibration Options – Adjustable intervals, reminders, and lockout features for compliance and safety.
Applications
The GX-Force is designed for a wide range of applications, including:
- Personal monitoring
- Confined space entry
- Refineries and petrochemical facilities
- Utilities
- Oil and gas operations
- Water and wastewater treatment
- Fire services
- Construction sites
Datalogging Capabilities
The GX-Force offers built-in datalogging for enhanced reporting and compliance:
- Adjustable logging intervals (10 seconds to 10 minutes)
- Maximum storage: 3,600 data points
- Logging capacity examples:
- 10-second interval = 10 hours
- 5-minute interval = 300 hours
- 10-minute interval = 600 hours
Why Choose the GX-Force?
With its lightweight design, long sampling range, and advanced monitoring features, the GX-Force is built for professionals who need dependable, real-time protection in challenging environments. From confined space safety to leak detection and industrial monitoring, the GX-Force delivers reliability in a small, rugged package.
You can find this product here: https://www.gas-sensing.com/gx-force-model.html



