Madison's sensors can be bench- or field-calibrated through communications with a PC or a push button on the sensor. This capability enables the user to define the span in the vessel and only trigger on objects within that window. Each standard model has its defined operating distance listed on the catalog chart page. Custom models can be designed for specific application needs based on the variables that can be found on the Madison Specification Work Sheet.

These ultrasonic sensors are not susceptible to error due to the target material's color, shape or composition (e.g., transparent or opaque, liquid or solid). They are particularly good for applications that must sense a non-metallic object in an environment where there is systematic, heavy wash down, liquid, dust, heavy spray, food, ink, or other environmental hazards. Since sound energy is used for detection, the reflecting object does not have to be metal, but can also be glass, plastic or even paper.

Stagnant, non-agitated liquids and solids consisting of large and hard particles are good reflectors and, therefore, good candidates for ultrasonic level measurement. Fluff, foam and loose dirt are poor reflectors, and dust, mist or humidity in the vapor space tend to absorb ultrasonic pulse. When these conditions are present, they are generally not measurable. As a rule of thumb, use 20% of the stated range of a Standard model to see if it will overcome these conditions. Where these characteristics are present, a Madison radar sensor might be appropriate.

Click here for specific product operation characteristics, or contact a Madison representative for further information.