Guided Wave Radar Working Principle Microwave pulse is emitted along a rope hanging from the tank ceiling into the tank, and time it takes for microwave to reflect from object to be measured and return to sensor is measured and converted into an air distance. FeaturesSpecificationsDocumentsApprovalsDrawingsVideosApplication NotesFeatures Unlike ultrasonic waves and non-contact microwaves, there is…
Ultrasonic Level Switch Ultrasonic switches use piezoelectric crystals to transform electrical energy into mechanical motion (sound). The Transmit Crystal sends a pulse of sound through the space between the crystals, to the Receive Crystal. If the space is filled with air, gas or vacuum, the Receive Crystal does not detect the sound pulse. However, if…
Optical Level Switch Optical level sensors consist of two main parts: an infrared LED coupled with a light transistor, and a transparent prism tip in the front. The LED projects an infrared light outward; when the sensor tip is surrounded by air the light reacts by bouncing back within the tip before returning to the…
Capacitance Level Switch Metal plates are arranged in parallel and charge voltage and capacitance are generated. Capacitance of the metal plates is determined by metal plate area S, distance between the two plates L , and dielectric constant of isolative material between the two plates εs. Insulators have specific inductive capacity. For example, air has…
Float Level Switch Float level switches work by using a buoyant float that moves up and down with the liquid level. This movement then actuates a switch, either directly or through a magnetic mechanism, to signal whether the liquid level is above or below a certain point. A float switch definition is: It is a…
Conductive Level Switch Conductivity level switches work by detecting the presence of a conductive liquid between two or more electrodes. When a conductive liquid bridges the gap between the electrodes, it completes an electrical circuit, triggering a signal. This signal can be used to indicate the liquid level, activate pumps, or trigger alarms. FeaturesSpecificationsDocumentsApprovalsDrawingsVideosApplication NotesFeatures Conductive level…
