RKI Instruments
GX-3R Confined Space 4 Gas Personal Gas Detector 72-RA-C
The GX-3R is the worlds smallest 4 gas monitor weighing only 3.52 ounces and can comfortably be clipped within a worker’s breathing zone (2.2” W x 2.55” H x 1.02” D). It simultaneously monitors and displays LEL combustibles; O2; CO (Hydrogen compensated CO also available); and H2S.
FEATURES:
- Simultaneous detection of 4 gases.
- Smallest & lightest 4 gas monitor.
- Simple 2-button operation.
- Non-Compliance Indicator.
- Alarms: audible; visual; & vibration.
- 3 user adjustable alarm levels.
- Impact resistant body with removable rubber boot.
- Large LCD Auto-backlit display.
- 25 hours of operation (Lithium-ion battery).
- Field replaceable sensors & filters.
- Water and dust resistant design; IP66/68.
- 3 Year warranty.
APPLICATIONS:
- Personal monitoring.
- Confined spaces.
- Refineries/petrochemical.
- Utilities.
- Oil and Gas.
- Water/Wastewater.
- Fire Services.
- Construction.
SPECIFICATIONS:
| Gas Detection Specifications (Part 1) | |||
|---|---|---|---|
| Gas Detected | Sensor Slot | Detection Principle | |
| (CO) H2 Compensated | 1 | EC | |
| Carbon Monoxide (CO) | 1 | Dual EC | |
| Hydrogen Sulfide (H2S) | 1 | Dual EC | |
| H2S Only | 1 | EC | |
| Combustible Gases (Methane as standard) | 2 | Catalytic combustion | |
| Oxygen | 3 | EC | |
| Gas Detection Specifications (Part 2) | |||
| Gas Detected | Detection Range (Increments) | Accuracy Statement | |
| (CO) H2 Compensated | 0 ~ 2;000 ppm (1 ppm) | ± 5% of reading or ± 2 ppm CO | |
| Carbon Monoxide (CO) | 0 ~ 2;000 ppm (1 ppm) | ± 5% of reading or ± 5 ppm CO (whichever is greater) | |
| Hydrogen Sulfide (H2S) | 0 ~ 200.0 ppm (0.1 ppm) | ± 5% of reading or ± 2 ppm H2S (whichever is greater) | |
| H2S Only | 0 ~ 200.0 ppm (0.1 ppm) | ± 5% of reading or ± 2 ppm H2S (whichever is greater) | |
| Combustible Gases (Methane as standard) | 0 ~ 100% LEL (1% LEL) | ± 5% of reading or ± 2% LEL (whichever is greater) | |
| Oxygen | 0 ~ 40% Vol. (0.1%) | ± 5% of reading O2 | |
| General Specifications | |||
| Sampling Method | Diffusion sampling standard (hand aspirator or clip-on motorized pump optional). | ||
| Display | Digital LCD displays with 7 segment plus 14 segment plus icon. | ||
| Preset Alarms (User Adjustable) Overscale Alarm (Non-Adjustable) | |||
| 1st alarm: 25.0 ppm2nd alarm: 50.0 ppm3rd alarm: 1200.0 ppmTWA alarm: 25.0 ppmSTEL alarm: 200.0 ppmOver alarm: 2000.0 ppm | |||
| 1st alarm: 5.0 ppm2nd alarm: 30.0 ppm3rd alarm: 100.0 ppmTWA alarm: 1.0 ppmSTEL alarm: 5.0 ppmOver alarm: 200.0 ppm | |||
| 1st alarm: 10% LEL2nd alarm: 25% LEL3rd alarm: 50% LELOver alarm: 100% LEL | |||
| Types of Alarms | Gas Alarm: 3 Increasing alarms; STEL; TWA; overscale alarm. O2 decreasing/increasing. | Trouble Alarm: Sensor disconnection; low battery; circuit error; calibration range error. | |
| Display of Alarm | Gas Alarm: Flashing LEDs; continuous buzzer (100 db @ 30 cm); flashing gas value; vibration. | Trouble Alarm: Flashing LEDs; intermittent buzzer (95 db @ 30 cm); display of error message. | |
| Operating Temp. & Humidity | -20°C ~ +50°C [ -4°F ~ +122°F ]; 10 to 90% RH; non-condensing (continuous environment). | -40°C ~ +60°C [ -40°F ~ +140°F ]; 0 to 95% RH; non-condensing (temporary environment; 15 minutes). | |
| Response Time | Within 30 seconds (T90) | ||
| Power Source | Lithium-ion battery; Approx. 25 hours after a 3 hour full charge. | ||
| Approvals | ATEX; CSA | ||
| Dimension & Weight | 2.2” W x 2.55” H x 1.02” D (Approx. 58 W x 65 H x 26 D mm); 3.52 ounces (approx. 100 g) without rubber booth. | 2.4” W x 2.63” H x 1.06” D (Approx. 61 W x 67 H x 27 D mm); 3.70 ounces (approx. 105 g) with rubber booth. | |
| Case Material | Explosion proof; dust and water resistant to IP-66/68 (2m;1h) approval. Drop height 23 ft. | ||
| Controls | Two buttons: POWER / MODE; AIR | ||
| Datalogging | Logs user ID; station ID; Calibration & Bump Test history; Alarm Events & Alarm Interval Trends. | ||
| Warranty | Three years material and workmanship. | ||
| Accessories | |||
| Standard Accessories | • Alligator clip | • Protective rubber boot | • A/C Charger | • Calibration Adapter |
| Optional Accessories | • SDM-3R calibration station | • RP-3R Clip-on sampling pump with 4” rubber nipple; 10’ hose and probe (up to 40’ hose available) | • Padded carrying case for GX-3R and accessories | • USB to IrDA downloading cable for datalogger |
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