FIELD: machine building.
SUBSTANCE: method of a valve assembly diagnosing with valve elements disposed in series along the flow channel of the valve assembly, comprises all steps of all sequentially arranged valve elements of the valve assembly opening. Thus the fluid can flow through the flow channel connecting the inlet and outlet of the valve assembly. Next, the noted method comprises the steps of measuring by the fluid flow sensor through the flow channel, opening of one of the valve assembly valve elements and checking by fluid leakage sensor caused by the defective valve element. Wherein the noted sensor is a flow sensor, preferably a mass flow sensor.
EFFECT: increased accuracy and reliability of the valve assembly diagnosis.
25 cl, 10 dwg
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