Microwave based flow detector

How does a Microwave based flow detector work? A microwave-based motion detector detects the Doppler shift of the flowing material. A complete flow detector consists of a transmitter and transducer. The transducer has a Gunn diode configured within a waveguide (horn) antenna and functions as both a microwave transmitter and receiver. The transmitter contains the measuring electronics and relay output. The Gunn diode emits a low power, continuous signal that is reflected from moving material in the process. It  monitors the movement of bulk materials and can be used to detect and indicate material blockages or feeder shutdowns.   If the reflecting […]

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Types of Flow Transducers

There are many hundreds of types of [ithoughts_tooltip_glossary-glossary]flow[/ithoughts_tooltip_glossary-glossary] meters depending on the make and application. They may be classified roughly as follows.     Positive Displacement Type Inferential Type Variable Type Differential Pressure Type Positive Displacement Type These types have a mechanical element that makes the shaft of the meter rotate once for an exact known quantity of fluid. The quantity of fluid hence depends on the number of revolutions of the meter shaft and the flow rate depends upon the speed of rotation. Both the revolutions and speed may be measured with mechanical or electronic devices. Some of the most common listed below. […]

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