May 2009

Instrumentation

How to select the better liquid-level measurement system

Here is a closer look at commonly used sensors

Aiken, L., MTS Sensors

There are many physical and environmental variables that affect selection of optimal level-monitoring solutions for industrial applications. The selection criteria includes temperature, pressure or vacuum, chemistry, dielectric constant of medium, density or specific gravity of medium, agitation, electrical noise, vibration, and the tank or bin size and shape. There are also application-specific price constraints, accuracy, response rate, physical size and instrument mounting, and agency approval. All these factors are important when choosing a liquid level sensor. The varying environmental conditions and application challenges have caused the level measurement industry to be quite complex

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