Patent ID: 6532809
Filing Date: 2003-03-18
Classification: F02M,Y10T

Abstract:
Monitoring equipment comprising a part which defines a cavity, input means to input fluid under pressure into the cavity, mounting means on the part to enable a fluid release device to be connected to the part and to release fluid from the cavity intermittently when the system is in use, control means connected to issue a triggering signal to the fluid release device to cause the latter to release fluid from the cavity, and a pressure sensor coupled to the cavity to provide a measure of the pressure within the cavity, wherein the equipment further comprises pressure signal modifying means connected to receive signals from the pressure sensor and the control means and constructed to provide an output signal which is a measure of the pressure of fluid within the cavity at the time the control means issues the triggering signal, whilst the effect of signals from the pressure sensor received by the modifying means on the output signal therefrom at other times is obviated.