Patent ID: 8516876
Filing Date: 2013-08-27
Classification: G01G,G01L,Y10T

Abstract:
1. A method of one of adjusting (taring) or re-calibrating an apparatus that includes a liquid-filled previously pressurized flexible tube that is closed at one end and is connected to a pressure sensor at an other end, the method comprising: activating predetermined controlling functions by establishing a differential of an external pressure exerted onto the tube by a person and a pressure prevailing in the previously pressurized tube; and in establishing the differential, taking into account variations of the pressure prevailing in the previously pressurized tube, when no external pressure is being exerted on the tube by the person, due to at least one variable external ambient parameter, wherein the external pressure exerted on the previously pressurized tube is released frequently at intervals that are shorter than a time span over which the variations in the at least one ambient parameter are felt, wherein a base or reference value for the one of the adjustment (taring) or re-calibration of the pressure prevailing in the previously pressurized flexible tube without the external pressures being exerted is provided as an average value of a predetermined number of minimum values, and wherein the average value is continually adjusted at predetermined time intervals.