FIELD: instrumentation.
SUBSTANCE: valve with hysteresis characteristic for measurement of gaseous medium flow comprises a body with a bushing fixed in it, having two locking surfaces, a movable piston, pulling permanent magnets, one of which is fixed in the bushing, the other - in the piston plate, additionally it comprises an inductance coil placed in the zone of interaction of magnets. The system of measurement of gaseous medium flow comprising a gas supply line, a valve with hysteresis characteristic and a measurement chamber having fixed volume, additionally comprises a critical nozzle.
EFFECT: increased accuracy of flow measurement.
4 cl, 2 dwg
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