Coal Mine Gas Drainage Comprehensive Parameter Measuring Instrument
Applicable conditions of the Gas Drainage Comprehensive Parameter Measuring Instrument: Suitable for measuring gas drainage parameters such as single-hole and main pipeline flow, gas concentration, negative pressure, temperature, etc., in both surface and underground coal mine gas extraction.
Main technical performance parameters of the Gas Drainage Comprehensive Parameter Measuring Instrument CJZ70:
1. Measurement range and allowable error parameters Measurement range Allowable error
Flow (m3/min) DN25: 0.010～0.400 ±1.5%FS
DN50: 0.040～1.600 ±1.5%FS
DN300: 2.5～100.0 ±1.5%FS
Methane (%CH?) 0.00～1.00 ±0.05%CH?
1.00～100.0 ±5.0% of value
Negative pressure (kPa) 10.0～200.0 (10-100)kPa: ±1.5%
(100-200)kPa: ±1.5kPa
Temperature (°C) -10.0～+50.0 ±1.0°C
2. Explosion-proof type: Mine intrinsically safe type (Explosion-proof mark: Exia I Ma).
Other requirements for the Gas Drainage Comprehensive Parameter Measuring Instrument CJZ70:
1. Simultaneous measurement technology for four parameters: gas concentration, flow, negative pressure, and temperature.
2. Simple operation, convenient borehole numbering, and data query.
3. The instrument can achieve internal gas circulation sampling, with the sampled gas re-entering the pipeline through the measuring tube. It requires fast measurement speed to quickly reflect conditions inside the gas drainage pipeline.
4. The instrument is not affected by other gas components and water vapor, enabling accurate detection of true gas content.
5. The instrument should be equipped with a water filter box and have a cleaning function, capable of resisting the impact of sludge in gas drainage boreholes, automatically draining water, and ensuring the sensor components remain undamaged and functional under harsh conditions.
Produced by Zhengzhou AidiCoal Mine Gas Drainage Comprehensive Parameter Measuring InstrumentSupplying coal drill cuttings desorption instrument, deep hole sampling device, pressure measuring instrument, geological exploration desorption instrument, borehole flow meter, mine extraction and outburst prevention equipment, true density measuring instrument for coal, gas content measuring instrument, automatic initial gas emission speed measuring instrument, diffusion speed measuring instrument, gas parameter instrument for coal drainage pipelines