Positive displacement flow meter VHS series

for high-viscosity liquidsstainless steelaluminum

● Connection G 1..G 21/2 ● Very low dependence on viscosity ● Can be used up to 40,000 mm²/s (cSt) ● Switching output and analog output (4..20 mA / 0..10 V) ● Light and compact device (aluminium housing) ● Operation and measurement possible with forwards and reverse flow ● For cost-sensitive applications ● Simple to use ● Cable outlet infinitely rotatable Characteristics The VHS flow transmitter measures the flow using the volumetric principle, and is suitable for fluid, viscous, lubricant media (e.g. lubricating oil). If the material for the VHS is selected appropriately, aqueous fluids such as soaps, pastes, and emulsions with non-abrasive characteristics can also be measured, as long as they have sufficient lubricity. Because of the volumetric functioning principle, the device is almost completely independent of viscosity. The VHS system consists of two interlacing screws which run in opposite directions, driven by the flowing medium. A magnetically pre-tensioned Hall sensor positioned outside the flow space detects the screw flanks, and creates a frequency signal proportional to the flow. Here, every pulse corresponds to a specific measured volume. There are no magnets in the flow space. The FLEX transducer on the sensor has an analog output (4..20 mA or 0..10 V) and one switching output, which can be configured as a limit switch for monitoring minimal or maximal, or as a frequency output or pulse output. The switching output is designed as a push-pull driver, and can therefore be used both as a PNP or an NPN output. The state of the switching output is signalled with a