... шахтах. This paper deals with electric contact (signaling) mechanical gauges and Head-Ex. Presented elektrokontaknye manometers in flameproof operating between 2.5 kPa and having a space-saving design. Electrocontact group performed on the basis of the microswitches.Methods are described for improving the reliability of signaling groups, as well as new designs shells flameproof pressure instrument. Materials and methods The problems with burning of contacts elektromontazhnykh groups are not using the ...

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