초록 ▼

A sensor apparatus includes a pressure sensor, a reference device and a temperature sensor collocated within a common environment. The reference device and the temperature sensor are constructed to have temperature response times matched to the temperature response time of the pressure sensor to com

A sensor apparatus includes a pressure sensor, a reference device and a temperature sensor collocated within a common environment. The reference device and the temperature sensor are constructed to have temperature response times matched to the temperature response time of the pressure sensor to compensate for temperature gradients produced either by external heating or by pressure-volume heating.

대표청구항 ▼

An apparatus for providing a signal in response to a detectable characteristic, said apparatus comprising: characteristic sensing means for generating a first signal, said first signal having an identifiable feature correlated to the characteristic by a response of said characteristic sensing means,

An apparatus for providing a signal in response to a detectable characteristic, said apparatus comprising: characteristic sensing means for generating a first signal, said first signal having an identifiable feature correlated to the characteristic by a response of said characteristic sensing means, which response is variable with temperature; reference means for generating a second signal, having an identifiable feature of the same type as said first signal, so that the identifiable feature of said second signal has a substantially constant value defining a reference value against which the identifiable feature of said first signal can be compared, said substantially constant value dependent upon a response of said reference means, which response of said reference means is variable with temperature, said reference means collocated with said characteristic sensing means; temperature sensing means for generating a third signal in response to the temperature where said characteristic sensing means and said reference means are collocated; a support body containing said characteristic sensing means, said reference means and said temperature sensing means; and wherein said characteristic sensing means and said reference means are collocated in a common fluid medium within said support body.