AO-CD4
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AO-CD4 mining use multi-gas detector with integrated circuit technology and high sensitivity catalytic and electrochemical gas sensors.
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The AO-CD4 mining use multi gas detector adopts large-scale integrated circuit technology and complies with international intelligent technology standards. This detector uses catalytic and electrochemical gas sensors to detect gases through natural diffusion, with excellent sensitivity and repeatability. Convenient use and maintenance greatly meet the high reliability requirements of equipment for safety monitoring in industrial sites such as coal mines. The shell is made of high-strength engineering plastic, which has high strength, good hand feel, and is waterproof, dustproof, and explosion-proof. This tester is widely used in industries such as coal mine, petroleum, chemical industry, environmental protection, metallurgy, refining, gas transmission and distribution, biochemical medicine, agriculture, etc.
Detecting gas | CH4, H2S, CO, O2 |
Sampling Method | Natural diffusion |
Sensor | Plug-in electrochemical sensor |
Accuracy | ≦±5% F.S. |
Response Time | ≦30s |
Indication | LCD displays real-time and system status; LED, audio and vibration alert for gas leakage, fault and low voltage. |
Alarm Type | Low & high alarm, multiple gas alarm, sensor alarm, battery low alarm, prompt tone, automatic shutdown alarm |
Working environment | -20℃~50℃, <95%RH (no dew) |
Power Source | DC3.7V Li-on battery, 1800mAh |
Charging time | 6h~8h |
Working time | ≧8h continuously (without alarming) |
Resolution | 0.1%VOL (O2), 1ppm (CO), 0.1ppm (H2S), 1%LEL (EX) |
Self-checking Function | Self-checking Battery power, display, sensor, hardware failure |
Gas Sensor Life | 2 years |
Explosion-proof grade | ExiaIICT3 |
Protection Grade | IP65 |
Weight | Approx. 400g (with battery) |
Dimensions | 130mm×67mm×30mm (L × W × H) |
Model | Range | Resolution | L-alarm | H-alarm |
CO | 0-1000ppm | 1ppm | 50ppm | 150ppm |
O2 | 0-30%vol | 0.1%vol | 19.5%vol | 23.5%vol |
H2S | 0-100ppm | 0.1ppm | 10ppm | 20ppm |
CH4 | 0-100%LEL | 1%lel | 20%LEL | 50%LEL |
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