PRESSURE DETECTION SYSTEM AND METHOD Russian patent published in 2015 - IPC G01L7/08 

FIELD: instrumentation.

SUBSTANCE: present description related to detection of pressure, namely to systems and methods of measurement of pressure of liquid in a disposable set for intravenous infusion connected to the liquid supply pump. The offered system includes a non-contact system of detection of pressure for measurement of both positive, and negative liquid pressure within the isolated path of passing liquid using the chamber comprised by the isolated passing route and connected to the liquid supply pump the cartridge configured for connection with the liquid supply pump and the method of measurement of liquid pressure in the disposable set for intravenous IV infusion connected to the liquid supply pump. The non-contact pressure detection system for measurement of both positive, and negative pressure of liquid within the isolated path of liquid passing using the chamber comprised by the isolated passing path and connected to the liquid supply pump contains the sensing device base connected to the pump and having, at least, one sensing device motionless with reference to the sensing device base, and the sensing device is configured for generation of the measured parameter signal indicating the variable of the measurement under consideration, the measurement circuit, electrically connected to the sensing device for reception of the measured parameter signal, the chamber or the housing, configured for attachment to the sensing device base, the chamber having: the inlet port for liquid and the outlet port for liquid, and the mobile element configured for movement with the liquid pressure changes in the chamber and thus initiating the change of a variable of the found measurement, without contact with the sensing device, and the size of movement of the mobile element is related to the size of liquid pressure change.

EFFECT: providing the pressure detection system for measurement of pressure of liquid inside a cartridge which is both accurate, and cost-saving.

34 cl, 9 dwg