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AS/NZS IEC 60947.5.9:2015 Low-voltage switchgear and controlgear Control circuit devices and switching elements - Flow rate switches
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Adopts IEC60947-5-9, Ed. 1.0 (2006) which applies to flow rate switches that sense the rate of flow of a gas, a liquid or a granular solid. These switches change their output state if a pre-set value for the speed of flow is exceeded.