Xi'an Kacise Optronics Co.,Ltd.
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KMCD4 Coal Mine Gas Watchdog
Introduction
The Coal Mine Gas Watchdog: KMCD4 is specifically designed for coal mine safety. It can detect multiple gases with an accuracy of ≤±5% F.S. and a response time of ≤30s. The full - function design is easy to operate. It has various alarm types, including low & high alarm and multiple gas alarm. Operating in a wide temperature range of - 20℃～50℃, it's powered by a DC3.7V Li - on battery, providing over 8 hours of continuous work.
Product Features
1. High - accuracy gas detection (≤±5% F.S.).
2. Fast response time (≤30s).
3. Multiple alarm types for comprehensive safety.
4. Wide operating temperature range.
5. Long - lasting battery power for continuous work.
Technical Parameters
| 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. |
| Sensor | plug-in electrochemical sensor |
| 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 | Ex ib llC T4 Gb |
| Protection Grade | IP66 |
| Weight | Appr. 400g (with battery) |
| Dimensions | 130mm×67mm×30mm(L × W × H) |
Specifications
| Model | Range | Resolution | L-alarm | H-alarm |
| CO | 0-1000ppm | 1ppm | 50ppm | 150ppm |
| O2 | 0-30%vol | 0.1%vol | 0 | 0 |
| H2S | 0-100ppm | 1ppm | 10ppm | 35ppm |
| CH4 | 0-5%vol | 0.01%vol | 1vol | 2.5vol |