GX-3R Personal Gas Detector by RKI Instruments
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RKI Instruments GX-3R personal four-gas monitor for confined spaces: LEL, O2, H2S and CO, small enough to clip in the breathing zone.
Model 72-RA-C: GX-3R for LEL / O2 / H2S / CO with Li-ion battery pack and 100–240 VAC charger.
Key benefits
- Compact: 2.2 in W x 2.55 in H x 1.02 in D, 3.52 oz
- H2-compensated CO sensor available
- Dual-filament LEL sensor for increased resistance to silicone poisoning
- Electrochemical O2 sensor with 3–5 year life; combo H2S/CO micro sensor
- Non-compliance indicator: LEDs flash every 30 s (adjustable) if bump test or calibration is due or after a gas alarm
- Audible, visual and vibration alarms; 3 user-adjustable alarm levels; simple 2-button operation
- 25 hours operation (Li-ion); IP66/68; 3-year warranty
Specifications
| Size / weight | 2.2 x 2.55 x 1.02 in; 3.52 oz |
| Ingress protection | IP66/68 |
| Run time | 25 h (Li-ion) |
| Warranty | 3 years |
Specifications (manufacturer)
| Gas Detected | (CO) H2 Compensated |
Carbon Monoxide(CO) | Hydrogen Sulfide(H2S) | H2S Only |
Combustible Gases (Methane as standard) |
Oxygen | |
| Dual Sensor | |||||||
| Sensor Slot | 1 | 2 | 3 | ||||
| Detection Principle |
EC | Dual EC | EC | Catalytic combustion | EC | ||
| Detection Range (Increments) |
0 ~ 2,000 ppm (1 ppm) |
0 ~ 200.0 ppm (0.1 ppm) |
0 ~ 100% LEL (1% LEL) |
0 ~ 40% Vol. (0.1%) | |||
| Accuracy Statement |
± 5% of reading or ± 2 ppm CO |
± 5% of reading or ± 5 ppm CO (whichever is greater) |
± 5% of reading or ± 2 ppm H2S (whichever is greater) |
± 5% of reading or ± 2% LEL (whichever is greater) |
± 5% of reading O2 | ||
| 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 ppm 2nd alarm: 50.0 ppm 3rd alarm: 1200.0 ppm TWA alarm: 25.0 ppm STEL alarm: 200.0 ppm Over alarm: 2000.0 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 |
1st alarm: 10% LEL 2nd alarm: 25% LEL 3rd alarm: 50% LEL Over alarm: 100% LEL |
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| 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 |
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| 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 |
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| 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) |
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| 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 |
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| 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 | ||||||
| Standard Accessories |
Alligator clip, protective rubber boot, charger, and 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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| Warranty | Three years material and workmanship | ||||||
Product information supplied by the manufacturer (RKI Instruments).
Product codes
SKU: 72-RA-C
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