Measurement sensor, with a rapid response time, is based on indirect measurement of the permitivity between two electrically conducting bodies

摘要

Measurement device comprises a measurement probe (10), means (30) for sequential application of controlled supply voltage to a measurement probe and a reference element and means (50) for integration of the electrical charge accumulated by the measurement probe. In addition means are provided to ensure an offset correction at the input to the integrator with a slaved offset correction at the integrator output. The reference element can be an earth, in automotive applications, for example, the vehicle chassis.