POINT CONTINUOUS LEVEL CONTROLS

Brand	Owner	Address	Description
PROB-A-LARM	Princo Instruments, Inc.	Southampton PA	Point and Continuous Level Controls, Level Control Probes, Level Detectors and Indicators for Use in Either Controlling, Detecting, Measuring or Indicating the Level of, or the Presence or Absence or Proximity of Liquids, Powders or Granular Materials in Vessels or Bins; and Parts Thereof;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A method for adjusting a reference level of an analog signal from a plurality of periodically sampled points includes the following steps. Firstly, a first level shift from an preliminary reference level to the last second sampled point within a specified period and a second level shift from the preliminary reference level to the last sampled point within the specified period is determined when one of a first level of the last second sampled point and a second level of the last sampled point is higher than the preliminary reference level and the other is lower than the preliminary reference level. Then, the preliminary reference level is moved toward the first level when an absolute value of the first level shift is greater than an absolute value of the second level shift, and the preliminary reference level is moved toward the second level when the absolute value of the first level shift is less than the absolute value of the second level shift, thereby defining an adjusted reference level.