Proposed are a pressure control method for a high-pressure regulator to prevent internal leak, and a high-pressure shut-off valve so as to minimize an internal leak, due to high-pressure gas remaining in a high-pressure fuel line when a valve of a gas storage tank is shut off, caused by a pressure difference between a front end portion and a rear end portion of the high-pressure regulator introducing or discharging high-pressure gas. Accordingly, the convenience for connecting work is provided, the high safety is ensured, and the high-pressure regulator is used with the high reliability.

The present disclosure relates to an inline sensor including a housing fixable in a wall of a fluid line or a process container. A first transducer for detecting a primary measurand of a medium contained in the fluid line or the process container is integrated into the housing and designed to generate first measurement signals dependent on the primary measurand. A sensor electronics is connected to the first transducer for detecting the first measurement signals and designed to process the first measurement signals. The inline sensor is additionally designed to detect pressure surges occurring in the process container.

Provided is a pressure control method for a high-pressure regulator to prevent internal leak, and the high-pressure shut-off valve so as to minimize an internal leak, due to high-pressure gas remaining in a high-pressure fuel line when a valve of a gas storage tank is shut off, caused by a pressure difference between a front end portion and a rear end portion of the high-pressure regulator introducing or discharging high-pressure gas. Accordingly, the convenience for connecting work is provided, the high safety is ensured, and the high-pressure regulator is used with the high reliability.

A piezo actuator is provided which is capable of continuing a provisional operation at least in a limited movable range without bringing an operation to a complete stop even upon occurrence of dielectric breakage. The piezo actuator includes a plurality of piezo blocks and a driving circuit. The piezo blocks are formed by alternately stacking a piezoelectric ceramic layer and an electrode layer. The driving circuit is connected to the piezo blocks. The piezo blocks are arranged in an extension/contraction direction. The driving circuit includes a power source part to which the piezo blocks are individually connected in parallel, and a plurality of limiting resistors respectively disposed in series to the piezo blocks.

A pressure capsule/header assembly for a process fluid pressure transmitter is provided. An isolator plug has an isolation diaphragm at a first end thereof and a second end spaced from the first end. The isolator plug has a fill fluid passageway fluidically coupling the first end to the second end. A header has a first end configured to carry a pressure sensor and a second end spaced from the first end. The header has at least one electrical interconnect extending from the first end to the second end. A biaxial support ring is disposed about an outer surface of the header. The biaxial support ring and the header define a tapered interference interface therebetween. The header is welded to the isolator plug at a first weld and the biaxial support ring is welded to the isolator plug at a location that is spaced from the second end of the header.

A pressure gauge includes a housing defining a fluid path and a bleed path. An inlet is mounted on the housing and a pressure sensor is disposed within the housing. A bleed valve is disposed along the fluid path and selectively opens or closes the bleed path. An actuator moves the bleed valve between a closed position and an open position. A control module is coupled to the pressure sensor and the actuator and includes a memory and a processor. A target fluid pressure is stored in the memory and the processor receives pressure data from the pressure sensor. When the pressure data is greater than the target fluid pressure, the processor controls the actuator to place the bleed valve in the open position. When the pressure data is equal to the target fluid pressure, the processor controls the actuator to place the bleed valve in the closed position.

Provided is a variable-capacity compressor control valve that is compact and is capable of suppressing the influence of the pressure difference between the crank chamber pressure Pc, the suction pressure Ps, and the like. A valve body includes an in-valve release passage for releasing a pressure Pc in a crank chamber to a suction chamber of a compressor via a Ps inlet/outlet port. A sub valve element adapted to open or close the in-valve release passage along with movement of the plunger is provided.

Control methods for generating a venturi vacuum in a substantially oscillation-free manner for a surgical system. The control methods generally include utilizing real-time readings from a venturi vacuum generator inlet pressure transducer and a vacuum pressure transducer on the vacuum side of the venturi vacuum generator. These values may be employed in real-time to ascertain the emergence of an oscillation region on the vacuum side which may then be addressed by way of a bleed control proportional valve. When employed in combination with a throttle control proportional valve at the inlet side of the venturi vacuum generator, pressures may be manipulated in light of one another and/or individually as directed through a central controller. Thus, the presentation of oscillations on the vacuum side may be avoided to provide for a more stable vacuum supported surgical procedure.

Pressure regulating systems are provided. The pressure regulating systems include a pressure sensor configured to sense pressure of water flowing through a pressure regulating device; an actuator coupled to the pressure sensor; an electronics module configured to receive pressure information related sensed pressure from the pressure sensor and process the received pressure information; and a radio module coupled to the device and configured to receive the processed sensor information from the electronics module, communicate the processed sensor information to a remote location and receive pressure adjustment information from the remote location. The received pressure adjustment information is used to adjust water pressure in the water network from the remote location.

A rate-of-change flow measurement device is provided including first pressure sensor, a position control valve with a valve position sensor, a second sensor position and a chamber comprising a part of the flow path of the device, and an isolation valve, arranged in this order along the flow path of the device. The device receives valve position data from the valve position sensor and pressure data from the pressure sensors, and calculates a volume of the chamber at least in part using the valve position data when a calibration of a device-under-test is performed by decreasing a pressure of the chamber or increasing the pressure of the chamber while opening the position control valve to maintain the pressure reading of the first pressure sensor constant to stay at a pressure set point.