Product Overview
The fully automatic density analyzer, developed and manufactured by our company in accordance with the GB/T23561.2-2009 standard "Method for Determination of True Density of Coal and Rock—True Density Analysis by Gas Expansion Method," is an intelligent analytical instrument. Utilizing the principle of gas expansion displacement and computer-automated control, it detects fundamental data such as true density, apparent density, and porosity of samples. Its advanced testing method makes it applicable in a wider range of fields compared to similar instruments, making it an essential analytical tool for modern mining units and testing institutions at all levels.

Performance Characteristics of the Fully Automatic True/Apparent Density Tester
One-click start enables fully automatic operation. The software simultaneously calculates parameters such as true density, apparent density, and porosity, and includes functions for printing, storing, and querying experimental reports, setting permissions, and accessing help.
The entire testing process is completed in 1-2 minutes, with a testing accuracy better than ±0.02%, repeatability better than ±0.015%, and a resolution of 0.0001 g/ml.
Wide applicability: suitable for samples with volumes above 0.01 ml; testable parameters include true density, apparent density, porosity, skeletal volume, and apparent volume.
Modular gas path structure with no pipeline connections between valves, reducing potential leakage points. Uniform temperature field ensures overall air tightness superior to similar products.
Uses 8L of high-purity inert helium gas (purity ≥99.99%) to avoid interference from adsorption of other gases affecting experimental results.

Zhengzhou Aidi produces fully automatic true/apparent density testers and supplies coal drill cuttings desorption instruments, deep-hole sampling devices, pressure testers, geological exploration desorption instruments, borehole flow meters, mine gas extraction and outburst prevention equipment, coal true/apparent density testers, gas content testers, automatic initial gas emission rate testers, diffusion rate testers, coal gas extraction pipeline gas parameter instruments, and borehole pulverized coal circulation devices.