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RKIModel GX-Force -Portable Gas Monitor

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The GX-Force by RKI Instruments is an advanced, compact 1-4 gas monitor designed for both personal and professional use, ideal for confined spaces and safety monitoring. It features a robust internal sample pump capable of a 100-foot sampling range and weighs only 9.8 ounces. It supports monitoring of standard confined space gases, including combustible gases (LEL), oxygen (O2), carbon monoxide (CO), and hydrogen sulfide (H2S). Equipped with advanced micro-sensors compatible with other RKI instruments like the GX-3R and Gaswatch 3, it offers two operational modes: Normal Operating mode for routine safety assessments and Leak Check mode for precise leak investigations of combustibles in ppm range. The GX-Force operates for up to 30 hours on a Li-ion battery, showcasing readings on a large LCD display. Critical alarms, both visual and audible, are programmable, ensuring immediate alerting in case of sensor errors or hazardous conditions. These alarms can either lock the device or halt further readings if calibration is overdue.
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The GX-Force is RKI’s smallest personal 1-4 gas monitor with a strong internal sample pump capable of a 100’ sampling range. Weighing only 9.8 ounces, the GX-Force can monitor the standard confined space gases (LEL combustibles, Oxygen, Carbon Monoxide, and Hydrogen Sulfide). Utilizing the same micro-sensor technology, which are compatible with the GX-3R, GX-3R Pro, 04 Series, and Gaswatch 3 instruments.

With the GX-Force, you have multiple tools in one instrument. Having 2 operating modes, the GX-Force can be used for confined space, safety monitoring in its Normal Operating mode. A Leak Check mode is the solution for leak investigations. In Leak Check Mode, the GX-Force can monitor for combustibles in the ppm range.

The GX-Force operates 30 hours on a Li-ion battery, and has a large LCD display showing all gas readings, battery level, current time and automatically backlights in alarm conditions. Standard alarm types include vibration, visual, and audible alarms, which can be set to latching or non-latching. Controlled by a microprocessor, the GX-Force continuously checks itself for sensor connections, low battery, circuit trouble, low flow, and calibration errors.

Calibration and bump test intervals and reminders are user adjustable and can be set to either go into alarm or to lock the user out of normal measurement mode once a calibration period has expired. Calibration can be done individually or in a group.

  • 2 Operating modes
    — Normal and Leak Check
  • Internal sample pump with 100′ sample range
  • 30 hours of operation (Lithium-ion battery)
  • USB Type-C charging & data connection
  • Easy to grip lightweight design
    — 2.5″ W x 6.81″ H x 1.85″ D, 9.87 ounces
  • Water and dust resistant design, IP67
  • Field replaceable sensors & filters
  • Impact resistant body
  • Intrinsically safe
  • Large LCD Auto-backlit display
  • 3 Year warranty
  • Personal monitoring
  • Confined spaces
  • Refineries/petrochemical
  • Utilities
  • Oil and Gas
  • Water/wastewater
  • Fire services
  • Construction
  • Sampling Method: Internal sample pump, flow rate nominal 0.5 LPM, includes hydrophobic filter
  • Suction Flow Rate: Minimum 0.35 L/min (open flow rate)
  • Gas Alarm Pattern: Lamp flashing, continuous modulating buzzer sounding, gas concentration display flashing, vibration
  • Gas Alarm Reset Operation: Self-resetting or latching
  • Fault Alarm/Self-Diagnosis: System, clock, or sensor abnormality; battery voltage drop; calibration failure;
  • pump abnormality; low flow rate
  • Fault Alarm Pattern: Lamp flashing, intermittent buzzer sounding, detail display
  • Fault alarm reset operation: Self-resetting
  • Display: LCD digital (7-segment + 14-segment + icons) with backlight
  • Individual Operations: Operational status, clock, battery level, peak reading, pump status, calibration notification
  • Sound Pressure: Approx. 90 dB (30 cm)
  • Data Logger Function: Maximum storage capacity: 3,600 items Interval: 5 minutes (adjustable)
  • Communication Specifications: USB, 2.0 (for data logger) Connector: Type-C
  • Power Source: Rechargeable lithium ion battery, USB Type-C power cord
  • Continuous Operating Time: Approx. 30 hours (25 °C, fully charged, no alarm, no backlight)
  • Operating Ambient Temperature /Humidity Range: -20 °C to +50 °C (no sudden changes), 0 – 95 % RH (no condensation)
  • (-4 °F to +122 °F)
  • Approvals:
    • Intrinsically safe construction
    • IECEx (Ex da ia IIC T4 Ga/Ex ia IIC T4 Ga)
    • ATEX (II1G Ex da ia IIC T4 Ga/II1G Ex ia IIC T4 Ga)
  • Certifications: 
    • CQPSUS, Class I, Div 1, Groups ABCD
    • Ex da ia IIC T4 Ga (w/ NCR-6309 sensor)/Ex ia IIC T4 Ga (w/o NCR-6309 sensor)
    • Class I, Zone 0
    • AEx da ia IIC T4 Ga (w/ NCR-6309 sensor)/AEx ia IIC T4 GA (w/o NCR-6309 sensor)
  • Protection Level: IP67 equivalent
  • External Dimensions / Weight: Approx. 2.52 (W) × 6.81 (H) × 1.85 (D) (excluding protrusions) / Approx. 9.87 oz.
  • Warranty: Three years material and workmanship