Plastic flow meter/switch for water and oil, with a spring-loaded float that is largely insensitive to viscosity; up to 100 l/min, 16 bar and 120 °C, optional reed switch.
Polysulfone instrument for measuring and monitoring the flow of water and oils. It uses a spring-loaded orifice float in a cylindrical metering tube, a design that reduces the influence of viscosity. One version has a grooved float for liquids carrying suspended particles; another has a sharp-edged orifice that is even less sensitive to viscosity changes.
The orifice float, held back by a spring, moves inside a cylindrical metering tube according to the flow rate. In the anti-clogging version the float has external grooves that prevent dirt from building up: the risk of the float sticking is greatly reduced and liquids containing particles up to 400 µm can be measured. In the sharp-edged orifice version the measurement is less affected by changes in fluid viscosity.