Einrichtung zur Messung physikalischer Groessen

The description relates to a device for the measurement of physical parameters such as pressure, temperature, etc. by means of a sensor whose resistance value changes as a function of said parameter, and which is connected in a branch of a measuring bridge, whose bridge voltage is analog-digital converted and processed in a digital arithmetical circuit. The device according to the invention is characterized by the combination of the following features: (a) The measuring bridge has a zero-point error so that the bridge voltage is always unequal to 0V (b) the bridge voltage is applied to an integrator whose output terminal is linked to a window comparator, which is reset when the upper window value is reached, and (c) the pulse output signal of the window comparator, whose width is a measure for the parameter to be measured, is applied to an input terminal of a microcomputer circuit which then calculates the physical parameter to be measured