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Food Processing Level Detection...Eliminating Calibration Drift and Re-Calibration of RF Capacitance Probes

PROBLEM:
“ I have to recalibrate my RF capacitance probe periodically.” This can be a problem in most any industry. But in the Food industry it is especially problematic because many products are made in batch form and even continuous operations can sustain thousands of dollars of out-of-spec product and downtime if the RF capacitance point level sensor isn’t functioning properly, especially due to poor calibration stability. Is this a problem for you? Can you “set and forget” your RF capacitance point level sensor?

EXPLANATION:
The typical RF capacitance style point level sensor requires some form of calibration or “tuning” to the specific installation and application. Varying conditions in the environment (changes in ambient temperatures) can affect the stability of the calibration of these devices. Changes in ambient temperatures can impact the characteristics of electronic components, thereby causing calibration drift. In addition, the quality, or grade, of electronic components affects a probe's ability to maintain a stable calibration.

SOLUTION:
Many Food industry manufacturers, including snack food manufacturers, have found a solution with the TrueCap® Model MK-2 RF capacitance point level sensor.

The MK-2 sensor combines a unique automatic temperature compensation function, a state-of-the-art microcontroller and the use of high quality industrial and mil-spec electronic components to ensure stable calibration to within its specification of +/- 0.01pf per degree F (0.018pf per degree C).

The TrueCap MK-2 also uses surface-mount components and provides a universal power supply and high-intensity LED’s for local indication of material presence/absence (ordinary location units only).

The MK-2 is available in a wide variety of probe configurations including food-grade acceptable materials of construction. The MK-2 has been providing stable installations free of re-calibration for several years.

Give Monitor Technologies a call and let us put our creative solutions to work for you!

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