MD-2 Gas Desorption Instrument Technical Specifications
Core Functions
Used for detecting the risk of coal and gas outbursts in underground coal mine working faces, achieving safety warnings by measuring the gas desorption indicators Δh? and K? values of coal drill cuttings.
Working Principle
1. Utilizes non-interventional measurement technology, directly leveraging the residual gas pressure of coal samples.
2. Monitors the gas release process in a sealed space:
o Measures gas desorption volume using a water column differential pressure gauge.
o Characterizes desorption properties through dual parameters of volume and pressure.
Instrument Structure
? Main body material: High-transparency acrylic, integrally molded.
? Core components:
o Precision water column gauge (range: 200mmH?O).
o Desorption reaction chamber (volume: 50mL).
o Standard coal sample bottle (capacity: 10g).
o Three-way/two-way tap control system.
? Physical parameters:
o Dimensions: 270×120×34mm (L×W×H).
o Weight: 800g±5%.
MD-2 Gas Desorption Instrument Technical Parameters
Coal sample particle size: 1–3mm.
Coal sample weight: 10g.
Measured indicators: Δh2, K1.
Water column gauge measured pressure difference: 200mm water column.
Instrument system error: ≤±1.46%.
Instrument precision: ±1mm water column.

Zhengzhou Aidi ProductionMD-2 Gas Desorption InstrumentSupplies 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, coal extraction pipeline gas parameter instrument, borehole coal powder circulation device.