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Liquid level sensor

Liquid level sensors are used to indicate the level of liquid within a tank or container. Liquid level detection is critical to a wide variety of processes. There exists a wide variety of applications in which it is desirable to monitor to some degree the level of a liquid within a tank or a vessel. Liquid level detectors have widely been used in various liquid tanks, for example, in an automobile for detecting the changing level of fuel in a tank. Liquid level is generally sensed by obtaining a discrete indication if a predetermined level has been reached or obtaining an analog representation of the level as it changes. Liquid level sensors make use of various kinds of float operated mechanisms, resistance mechanisms, capacitative mechanisms, and acoustic mechanisms. The most commonly used fluid level sensor is the variable resistor sensor utilizing a float to produce a resistance change in the variable resistor. Capacitive liquid level generally include a reference capacitor adapted to be fully submerged in the liquid and a measuring capacitor. Liquid level electro-optical sensors operate on the principle of different indices of refraction between the transparent body of a probe and a gaseous medium above the liquid.

Liquid level sensor product listings

Diffusive silicon level transmitter

Series liquid level transmitter is the extension and development of pressure transmitter which is based on the principle that pressure generated by liquid with different specific gravity at different height are linear to realise the accurate measurement and transmission of volume, level height and weight of water, oil and pasted matters.

Flange type level transmitter

HHLT (smart) flange type level transmitter can carry on accurate measurement of level and density for all kinds of containers. Level flange and insert flange are available. Flange has 3 inches or 4 inches. Specification has 1501b and 3001b flanges. We may also have flange custom-made.

Elixir liquid level sensor

Elixir is a tuning fork based level sensor for liquids where the fork is kept in mechanical vibration at resonance frequency by piezo crystals. When the tines of the fork are immersed in liquid, the frequency changes which is sensed electronically and processed signal is used for switching.

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