GX-Force Sample Draw 4 Gas Monitor
GX-Force Sample Draw 4 Gas Monitor
GX-Force Sample Draw 4 Gas Monitor

GX-Force Sample Draw 4 Gas Monitor

Pine Item #52937
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). Built around high-quality 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 (firmware available Q4) is the solution for all leak investigations.

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.

In Leak Check Mode, the GX-Force, can monitor for combustibles in the ppm range.

2 Operating modes
— Normal and Leak Check (Q4)

Internal sample pump with 100' sample range

30 hours of operation (Lithium-ion battery)

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



Oil and Gas


Fire services


Quantity must be 1 or more
Equipment available for both rental and purchase
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Sampling MethodInternal sample pump, flow rate nominal 0.5 LPM, includes hydrophobic filter
Suction Flow RateMinimum 0.35 L/min (open flow rate)
Gas Alarm PatternLamp flashing, continuous modulating buzzer sounding, gas concentration display flashing, vibration
Gas Alarm Reset OperationSelf-resetting or latching
Fault Alarm / Self DiagnosisSystem, clock, or sensor abnormality; battery voltage drop; calibration failure; pump abnormality; low flow rate
Fault Alarm PatternLamp flashing, intermittent buzzer sounding, detail display
Fault Alarm Reset OperationSelf-resetting
DisplayLCD digital (7-segment + 14-segment + icons) with backlight
Individual OperationsOperational status, clock, battery level, peak reading, pump status, calibration notification
Sound PressureApprox. 90 dB (30 cm)
Communication SpecificationsUSB, 2.0 (for data logger) Connector: Type-C
Power SourceRechargeable lithium ion battery
Continuous Operating TimeApprox. 30 hours (25 °C, fully charged, no alarm, no backlight)
Operating Ambient Temparature / Humidity Range-20 °C to +50 °C (no sudden changes), 0 - 95 % RH (no condensation) (-4 °F to +122 °F)
ApprovalsIntrinsically 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)
CertificationsATEX / IECEx, QPS (pending)
Protection LevelIP67 equivalent
External Dimensions / WeightApprox. 2.52 (W) × 6.81 (H) × 1.85 (D) (excluding protrusions) / Approx. 9.87 oz.
WarrantyThree years material and workmanship
Detection Gas TargetCombustible gas
(CH4 or HC)
Carbon monoxide
Hydrogen sulfide
Detection PrincipleCatalytic combustionElectrochemical type
Detection Range0 - 100 % LEL0.0 - 40.0 vol %0 - 2,000 ppm0.0 - 200.0 ppm
Resolution1 % LEL0.1 vol %1 ppm0.1 ppm
Alarm Setpoints
(User-defined Setting)
1st alarm: 10 % LEL
2nd alarm: 25 % LEL
3rd alarm: 50 % LEL
OVER alarm: 100 % LEL
1st alarm: 10 % LEL
2nd alarm: 25 % LEL
3rd alarm: 50 % LEL
OVER alarm: 100 % LEL
L alarm: 19.5 vol %
LL alarm: 18.0 vol %
H alarm: 23.5 vol %
OVER alarm: 40.0 vol %
1st alarm: 25 ppm
2nd alarm: 50 ppm
3rd alarm: 1200 ppm
TWA alarm: 25 ppm
STEL alarm: 200 ppm
OVER alarm: 2,000 ppm
1st alarm: 5.0 ppm
2nd alarm: 30.0 ppm
3rd alarm: 100.0 ppm
TWA alarm: 1.0 ppm
STEL alarm: 5.0 ppm
OVER alarm: 200.0 ppm
Response Time (T90)CH4: Within 30 seconds,
HC: Within 40 seconds
Within 20 secondsWithin 30 secondsWithin 30 seconds
Manuals, Data Sheets & Software