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From globalspec.com
Many types of industrial processes utilize Liquid Level sensors to provide the information needed to monitor and control the process. This enables the design parameters to be maintained in order to produce the end product at the desired level of quality and throughput. Typical sensors may measure product level, interface level, as well as temperature. The type of measurement and the sensor technology will dictate the set of parameters which are important in specifying the appropriate sensor. Liquid Level sensors measure absolute distance along the vertical axis of a vessel. They are available in several technologies, each having its own advantages and disadvantages. This article presents information on the application of magnetostrictive level sensors, which are gaining popularity due to their accuracy and reliability. A comparison of magnetostrictive sensors to level sensors of other technologies is also included. Products & Services
Liquid level sensors are used to detect liquid levels or interfaces between liquids such as oil and water or liquids and solids.
Level sensors are used to detect liquid or powder levels, or interfaces between liquids. There are two basic level-measurement types: continuous and point or multi-point.
Magnetostrictive position sensors are non-contact linear position sensors that use the momentary interaction of two magnetic fields to produce a strain pulse that moves along a waveguide. One field is from a magnet that moves along the outside of the waveguide. The other field is from the waveguide itself.
Level transmitters or level transducers are used to measure the level of a liquid or bulk solid material (as well as slurries) within a specified space. For each measurement, they provide an electrical output that is proportional to the input level.
Pressure sensors include all sensors, transducers and elements that produce an electrical signal proportional to pressure or changes in pressure.
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