GADGET TO MEASURE EFFECTIVE GAS DIFFUSION IN COAL Russian patent published in 2015 - IPC E21F5/00 

FIELD: instrumentation.

SUBSTANCE: invention relates to mining, primarily, to coal industry and can be used in mines for determination of effective gas diffusion in the coal at sampling point in real time. Claimed gadget comprises the case to house the power supply, gas accumulation unit composed of a sealed container with chip sampler and pressure transducer, electronic unit with processor, electronic switch and timer, control board, indicator and USB port. Note here that this gadget is provided with extra accumulation unit and pressure transducer while its electronic unit incorporates memory and computing units. Note also that outputs of the main and extra pressure transducers are connected to processor inputs. Processor outputs are connected via electronic switch first inputs to indicator and memory, electronic switch being connected to timer. Electronic switch second outputs are connected with the computing unit. Outputs of the latter are connected to indicator and communication (USB) port.

EFFECT: simplified measurement.

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