Level Sensor

Level Sensor

Level sensors detect the level of substances that flow, including liquids, slurries, granular materials, and powders. Fluids and fluidized solids flow to become essentially level in their containers (or other physical boundaries) because of gravity whereas most bulk solids pile at an angle of repose to a peak. The substance to be measured can be inside a container or can be in its natural form (e.g., a river or a lake). The level measurement can be either continuous or point values. Continuous level sensors measure level within a specified range and determine the exact amount of substance in a certain place, while point-level sensors only indicate whether the substance is above or below the sensing point. Generally the latter detect levels that are excessively high or low.

There are many physical and application variables that affect the selection of the optimal level monitoring method for industrial and commercial processes. The selection criteria include the physical: phase (liquid, solid or slurry), temperature, pressure or vacuum, chemistry, dielectric constant of medium, density (specific gravity) of medium, agitation (action), acoustical or electrical noise, vibration, mechanical shock, tank or bin size and shape. Also important are the application constraints: price, accuracy, appearance, response rate, ease of calibration or programming, physical size and mounting of the instrument, monitoring or control of continuous or discrete (point) levels.

Read more about Level Sensor:  Point and Continuous Level Detection For Solids

Other articles related to "level sensor, level, sensor":

Level Sensor - Continuous Level Measurement of Liquids - Gamma Ray
... A nuclear level gauge or gamma ray gauge measures level by the attenuation of gamma rays passing through a process vessel ... The technique is used to regulate the level of molten steel in a continuous casting process of steelmaking ... As the level of molten steel rises in the mold, less of the gamma radiation is detected by the sensor ...
Example FMEA Sheet
... target completion date Action taken New S New O New D New RPN Fill tub High level sensor is disconnected Liquid spills on customer floor 8 sensor is exposed at top and can be easily disconnected by user 2 Fill ...

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