Hypsometer with controlled heating specially for use in meteorologic radio-sondes

摘要

the hypsometer has an open siedegefu00e4ss (1), a messflu00fcssigkeit (4) containing the piston 2 and a neck part (3) is followed. in the messflu00fcssigu00adkeit (4) there is a heizwiderstand (15). with a temperau00adturfohler (5), the boiling point is collected.the situation of the kondensationszone within the gefu00e4sshalses (3) to stau00adbilisieren is an adaptive control system for which the heat output to the respective boiling point - temperature adjusted set point control.in the simplest case, such a scheme can thus realize that as heizwiderstand (15), a thermistor with negative temperaturu00adkoeffizienten is used.;in this way, the heating capacity in the whole drucku00adbereich is required, so that, on average, less heat is required and thus the batteriegewicht can be considerably reduced.