GX-Force Sample Draw 4 Gas Monitor - SPECIFICATIONS
GX-Force Sample Draw 4 Gas Monitor - SPECIFICATIONS
by RKI Instruments
| 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 |
| Detection target gas |
Combustible gas |
Oxygen |
Carbon monoxide |
Hydrogen sulfide |
| Detection principle |
Catalytic combustion |
Electrochemical type |
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| Detection range |
0 – 100 % LEL |
0.0 – 40.0 vol % |
0 – 2,000 ppm |
0.0 – 200.0 ppm |
| Resolution |
1% LEL |
0.1 vol % |
1 ppm |
0.1 ppm |
| Alarm setpoints
(User-defined setting) |
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 seconds |
Within 30 seconds |
Within 30 seconds |