Venturi flow meter for liquids and gases, from 0.5 to 2350 l/min water or 2750 Nm³/h air, up to PN40, with mechanical pointer or electronics with outputs.
Instrument for measuring and monitoring the flow of liquids and gases based on the Venturi tube principle. The profile of the restriction is designed so that flow conditions remain constant across the whole measuring range. It is available with a mechanical pointer display or with electronics providing analogue, pulse and switching outputs and a digital display.
The medium passes through a Venturi restriction in the body and produces a small differential pressure proportional to the flow rate. Pressure tappings in the connections transfer it to a measuring cell in the display housing, protected by mechanical stops if the maximum flow is exceeded. In mechanical versions a linkage drives the pointer, calibrated in l/min water or Nm³/h air; in electronic versions a Hall-effect sensor converts the movement into an electrical signal. Special scales for other media, pressures and temperatures are available on request.