Simultaneously detects explosive methane and toxic carbon monoxide underground coal mines. It is standard equipment for safety inspectors, blasters and ventilation workers, applied in mining faces, return airways, sealed roadways and blasting working areas to prevent gas explosion and CO poisoning with over-limit alarm function.
Product Advantage
1. Simultaneous dual-parameter detection: Measures methane and carbon monoxide at the same time to prevent explosion hazards and CO poisoning risks simultaneously. A single device replaces two single-gas detectors.
2. Poison-resistant laser methane sensor: Adopts TDLAS technology, free from interference of impurity gases and water vapor. The sensor features long service life and requires infrequent calibration, supporting long-distance non-contact remote measurement.
3. High-sensitivity CO detection: The electrochemical sensor accurately identifies low-concentration carbon monoxide and provides early warning of coal spontaneous combustion risks.
4. Dual sampling modes: Diffusion sampling is standard configuration, and pump suction sampling is optional, enabling detection in narrow pipelines and drill holes.
5. Reliable triple alarm system: Equipped with sound, light and vibration alarms with adjustable thresholds, effectively avoiding missed alerts in noisy underground environments.
6. Explosion-proof and durable: Certified with MA safety mark and intrinsic safety approval, rated IP65 for dust and splash resistance. Shockproof, waterproof and dustproof, suitable for harsh underground working conditions.
7. Intelligent operation: Color screen displays multiple parameters synchronously; supports one-touch calibration and timestamped data storage, facilitating safety file archiving.
8. Portable design with long endurance: Equipped with a belt clip for easy attachment. Fully charged battery supports full-shift inspection, bringing lower overall maintenance costs.
Technical Parameters
Item | Methane (CH4) | Carbon Monoxide (CO) |
Measuring Range | 0.00 ~ 10.0%VOL | 0 ~ 1000ppm |
Resolution | 0.01%VOL | 1ppm |
Basic Error | 0.00~1.00%: ±0.06%VOL | 0~100ppm: ±4ppm |
T90 Response Time | ≤20s | ≤45s |
Detection Principle | TDLAS Laser Spectroscopy | Electrochemical |
Sampling Mode | Diffusion type | Diffusion type |
Alarm Setpoint (Adjustable) | 0.50~2.50% (Default: 1.00%) | 0~1000ppm (Default: 24ppm) |
Alarm Mode | Sound, light &vibration alarm | Sound, light &vibration alarm |
Alarm Volume | ≥75dB (at 1m) | ≥75dB (at 1m) |
Display | Color LCD screen | ---- |
Operating Temperature | 0℃ ~ 40℃ | ---- |
Storage Temperature | -40℃ ~ 60℃ | ---- |
Relative Humidity | ≤98%RH (Non-condensing) | ---- |
Working Pressure | 80 ~ 116kPa | ---- |
Explosion-proof Mark | Exib I Mb | ---- |
Protection Grade | IP65 | ---- |
Power Supply | 3.7V Lithium Battery,2000mAh | ---- |
Continuous Working Time | ≥10h | ---- |
Dimension | 132 × 74 × 36.5 mm | ---- |
Weight | 310g | ---- |
Housing Material | Anti-static ABS+PC | ---- |
Product Uses
1. Routine underground ventilation inspection: Simultaneous detection of methane and carbon monoxide at mining faces, return airways, electrical chambers and upper corners to eliminate explosion and poisoning risks.
2. Blasting operation monitoring: Gas measurement before and after charging and blasting to check CO emission from blasting fumes.
3. Special roadway construction: Continuous gas monitoring during roadway connection, seal opening and ventilation recovery.
4. Coal spontaneous combustion prevention: Fixed-point CO detection in goafs and drainage drill sites for early fire hazard prediction.
5. Mine emergency rescue: Remote detection of flammable and toxic gases in disaster zones after gas outburst, fire or roof collapse.
6. Narrow space measurement: External pump suction sampling for boreholes, gas pipelines and sealed pipe inserts.
7. Extended engineering use: Safety detection for tunnels and non-coal mines with simultaneous methane and CO emission.
FAQ
Q: What's the lead time for orders?
A: Within 20 days after first payment.
Q: Do you provide sample? Free or charge?
A: Free samples are available, courier cost is borne by the buyer.
Q: How do you guarantee quality?
A: Always a pre-production sample before mass production;
Always final inspection before shipment.
Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).
Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.
