Compensated pressure sensor nonlinearity of zero drift at low temperatures.

摘要

For compensation of the nonlinearity of the zero drift of the bridge at very low temperatures, at least one of the branches of the bridge (10) the wire strain gauge is in series with a resistor (c), for example a cord connection having a value much lower than the caliber and on which is connected in parallel a compensation circuit ,. Comprising a resistive element, for example a platinum probe whose resistance varies with temperature for influencing the resistance value of which is connected in parallel, in the field of very low temperatures, sensitively and increasing when the temperature is reduced.