Technical Manual for MD-98 Intelligent Coal Drilling Cuttings Gas Desorption Instrument
I. Product Overview
The MD-98 Intelligent Coal Drilling Cuttings Gas Desorption Instrument is a modern coal mine safety detection device based on micro-differential pressure sensing technology and a single-chip microcomputer control system. This instrument is primarily used in underground coal mines and laboratory environments to quickly and accurately measure the coal drilling cuttings gas desorption index Δh2 value, providing scientific basis for predicting the risk of coal and gas outbursts.
II. Main Technical Parameters
1. Basic Parameters
? Measurement Range: 10Pa～2KPa
? Measurement Error: ±5%
? Display Method: 8-digit LCD screen
? Operating Time: ≥8 hours
? Operating Voltage: 12V DC
? Operating Current: 180mA
2. Environmental Parameters
? Operating Temperature: 0～40℃
? Operating Humidity: ≤96% RH
? Atmospheric Pressure: 80～110KPa
3. Physical Parameters
? Dimensions: 190×118×64mm
? Weight: 1.5kg
4. Sample Parameters
? Coal Sample Measurement Quantity: 10g
? Coal Sample Particle Size Requirement: 1～3mm
? Measurement Time: 5 minutes per test
III. Technical Features
1. Utilizes high-precision micro-differential pressure sensors for accurate and reliable measurement results.
2. Integrated single-chip microcomputer intelligent control system enables fully automated measurement.
3. Lightweight design for easy portability and operation underground.
4. Low power consumption design meets the demands of long-term continuous operation.
5. Suitable for harsh underground working environments.
IV. Application Areas
1. Prediction of outburst risks in coal and gas outburst mines.
2. Safety monitoring of rock cross-cut coal uncovering, coal roadways, and working faces.
3. Effectiveness testing of outburst prevention measures.
4. Coal mine safety scientific research experiments.
V. Operating Instructions
1. The instrument requires a 5-minute warm-up after powering on.
2. Prepare a 10g coal sample with a particle size of 1-3mm as required.
3. Load the coal sample into the dedicated sample chamber.
4. Initiate the automatic measurement program.
5. Read the Δh2 value after 5 minutes.

Manufacturer Zhengzhou Aidi Technology Co., Ltd. is dedicated to the research, development, and production of equipment for mine gas laboratories, outburst prevention instruments, and ventilation, gas control, dust control, and fire prevention (commonly known as "one ventilation, three preventions"). The equipment includes gas content determination devices, coal sample cans, fully automatic gas adsorption constant determinators, fully automatic gas initial diffusion velocity determinators, fully automatic density meters, fully automatic industrial analyzers, intelligent coal dust explosion determinators, coal spontaneous combustion tendency determinators, and intelligent coal drilling cuttings gas desorption instruments.