The GDS Gas Emission Initial Velocity Measuring Device is used to determine the initial velocity of gas emission (Δp). This supporting device can be widely used for the identification of coal and gas outbursts in coal mines and can simultaneously measure five sets of coal powder. It is an apparatus for identifying the risk of coal and gas outbursts in mines, utilized by coal mine production inspection agencies at all levels, mining bureaus, regional coal mine instrument metrology stations, and various metrology technical institutions.
Performance Features of the GDS Gas Emission Initial Velocity Measuring Device: Automatically controlled according to standards, achieving automatic desorption and adsorption.
Automatically measures and displays the pressure difference Δp of five coal samples.
Automatically judges whether the measurement results are correct and performs deviation judgment.
Automatically calculates the initial emission velocity Δp and generates test results.
Data collection and control are managed via computer, with storage of data charts. Equipped with a printer interface for printing test reports and charts.
Comes with coal powder containers, glass weighing bottles, agate mortar, 0.2mm and 0.25mm sieves, analytical balance, and drying oven to ensure device completeness.
Elegant appearance, sturdy and durable, simple and convenient operation. Performance complies with AQ 1080-2009 "Method for Determination of Initial Velocity Index of Gas Emission from Coal (ΔP)".
Technical Parameters of the GDS Gas Emission Initial Velocity Measuring Device:
Pressure range and accuracy: 0.1MPa (0~760mmHg), 0.2%FS (1mmHg) 1Pa
Accuracy: Class 0.5
Gas pressure: 0.1MPa
Adsorption and desorption time accuracy: 0.1S
Gas concentration: 99.9% CH4
Balance accuracy: 0.1g, 200g
Power supply: AC220V 50Hz
Number of channels: 5 channels 

Zhengzhou Aidi produces GDS Gas Emission Initial Velocity Measuring Device, supplies coal drill cuttings desorption instruments, deep-hole sampling devices, pressure measuring instruments, geological exploration desorption instruments, borehole flowmeters, mine gas extraction and outburst prevention equipment, coal true density measuring instruments, gas content measuring instruments, automatic gas emission initial velocity measuring instruments, diffusion velocity measuring instruments, coal gas extraction pipeline gas parameter instruments underground gas desorption instruments, coal sample cans/coal sample cylinders, geological exploration gas desorption instruments, borehole multi-stage flowmeters

Mine hole sealing devices, high-negative-pressure gas samplers, methane sensor calibrators, automatic negative-pressure samplers, positive-pressure samplers/multi-gas samplers, methane sensor calibrators, self-rescuer airtightness testers (pointer type/digital display/touch screen type), integrated underground gas content measuring instruments, coal gas content measuring instruments
Optical interference methane detector measuring devices (intelligent type), optical interference methane detector calibrators (water column type), electric thermostatic drying ovens
Laboratory instruments:
Direct/automatic gas content measuring devices (normal pressure desorption method), residual gas content measuring devices (degassing method), deep-hole rapid sampling devices, fully automatic gas adsorption constant measuring instruments, fully automatic gas emission initial velocity measuring instruments, fully automatic coal true density measuring instruments, fully automatic industrial analyzers, mine gas chromatographs, coal spontaneous combustion標志性氣體 experimental devices, ball mills, sealed sample preparation grinders, fully automatic sulfur determination instruments, coal dust explosion determination devices, coal spontaneous combustion tendency measuring instruments, coal sample preparation devices, active coal seam gas pressure measuring instruments, gas sensor verification devices, coal spontaneous combustion標志氣體 and critical value measuring instruments, borehole coal powder circulation devices