Features of Different Liquid Level Sensing Technologies

Level indicators are devices that are used to detect the level of liquids, powders and granular materials. These devices can measure the liquid level if it’s inside a container and can detect liquid at its natural form, such as lake or sea. The new technology sensors are portable as well as easy to use. The whole procedure just takes placing of the unit on the wall of the container and in a few seconds the signals are received with exact measurements. Liquid level indicator devices can be of various different technologies. There is a variety in the market these days, each technology having its pros and cons. Here is an introduction to some of the most famous level sensor technologies available in the United States today:

Capacitance Level Indicators:

Capacitance sensors are majorly famous for their ability of being able to measure a number of fluids including, aqueous, solids and organic liquids. This technology is called as RF, because of its application of radio frequency. The device has no moving parts and is pretty much portable. It can be carried easily from place to place. The new technology in capacitance level indicators that did not require wire of any kind to be extended within the container was introduced first in 1989.

Optical Level Indicators: level switch manufacturer

Optical sensors are used in detecting the level of liquids that have suspended solids, sediments and liquid-liquid interface. The optical sensors use infrared light, which is emitted from infrared diode to detect the level of liquid within a container. These sensors can be used for the level sensing of corrosive organic and aqueous liquids. However, because of the laser use, these units come off expensive and are usually avoided on small budget.

Conductive Level Indicators:

Conductive sensors are one of the most famous indicators currently being used in the field. They are reliable and are famous for being portable with non movable parts. These types of detectors are famous mostly for point level detection and are applicable in measurement of various types of liquids including water, hydrochloric acid, caustic soda, ferric chloride and nitric acid. This kind of liquid level indicator requires a very low voltage. They are the most efficient for use in wastewater wells and pumps.

Ultrasonic Level Indicators:

Ultrasonic sensors are currently being considered as the most modern technology devices in the market. They are famous for their accuracy as well as quick results. They are used in detection of bulk solids as well as highly vicious liquids and are also being used for level detection of pump control, water treatment applications and open channel measurement of flow. These units are also portable and come in very handy if required to be carried around with a battery backup of about ten hours of work, meaning they do not require to be plugged in during work.

Among all of the mentioned most famous technologies currently being used, the selection highly depends on the nature of measurement and requirement of work. If you want to purchase a liquid level indicator, you will first need to research about different technologies, and choose the one that suits you.


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