Low pressure measurement devices in high pressure environments

Abstract From the Canadian patent

The present invention presents various novel approaches to solving the problems inherent in measuring biological pressures in high pressure systems. Thus, to protect a pressure transducer exposed to fluid flows at higher pressures than its overpressure rating a novel valve is used that closes a , protected leg in which the transducer is located. The various exemplary embodiments of such valves each have a high pressure input one or more low , pressure inputs, and an output. In operation when a high pressure fluid flow , occurs at a high pressure input such valves automatically close the low pressure inputs. Alternatively, a novel transducer system is presented which , automatically …