A valve for adjusting a fluid flow. The valve includes a valve body, a flow having an inlet and an outlet located downstream of the inlet, a flow adjustment arrangement for adjusting the flow of liquid from the inlet to the outlet, wherein liquid upstream of the flow adjustment arrangement but downstream of the inlet has an upstream pressure, and liquid downstream of said flow adjustment arrangement but upstream of the outlet has a downstream pressure, a stationary differential pressure sensor configured to measure a pressure difference between the upstream pressure and the downstream pressure, and a pair of pressure ports for enabling temporary connection of a non-stationary differential pressure sensor for measuring the pressure difference between the upstream pressure and the downstream pressure. Also a method for use with such a valve.

A pressure gauge and/or relief valve which may be used in a single-use fluid system, such as a sterilizable fluid system. The pressure gauge and/or pressure relief valve may be formed of a disposable and/or sterilizable material, such as a non-metallic (e.g., polymeric) material. The material of the pressure gauge and/or pressure relief valve may be compatible with the material of a fluid-containing structure of the fluid system, such as to be bonded (e.g., welded) therewith. The fluid-containing structure may be retrofitted to integrate the pressure gauge and/or pressure relief valve therewith. The pressure gauge and/or pressure relief valve may have a simple configuration, such as a housing with a movable element therein. The movable element moves with respect to the housing to indicate pressure and/or to relieve pressure from within the housing and/or fluid-containing structure.

A system and method of analyzing duct pressure within a pipe allows for monitoring and detecting vacuum pressure of gases. The system includes a pressure monitor and a target duct. The pressure monitor preferably includes an alarm light, a speaker, a sensing light, an alert indicator, and a battery alert. The method begins by periodically capturing a plurality of pressure readings inside the target duct with the pressure monitor. Each pressure reading is logged with the pressure monitor. Each pressure reading is compared to each situational alert with the pressure monitor to identify at least one matching alert for at least one specific reading. The matching alert is from the plurality of situational alerts. The specific reading is from the plurality of pressure readings. The matching alert is visually and/or audibly outputted with the pressure monitor, if the matching alert is identified for the specific reading.

A system and method of analyzing duct pressure within a pipe monitors and detects vacuum pressure of gases. The system includes a pressure monitor and a target duct. The pressure monitor preferably includes an alarm light, a speaker, a sensing light, a service light, and a battery alert. The method begins by periodically capturing a plurality of pressure readings inside the target duct with the pressure monitor. Each pressure reading is timestamped with the pressure monitor. Each pressure reading is compared to each situational alert with the pressure monitor to identify at least one matching alert for at least one specific reading. The matching alert is from the plurality of situational alerts. The specific reading is from the plurality of pressure readings. The matching alert is visually and/or audibly outputted with the pressure monitor, if the matching alert is identified for the specific reading.

Systems and methods are disclosed for a switched, multiple range sensor system including multiple transducers. In one embodiment, a method is provided that includes receiving and measuring at a first transducer and a second transducer, a pressure to generate a respective first and second pressure signal; amplifying the first and second pressure signals with corresponding first and second fixed-gain amplifier to generate first and second amplified pressure signals; selecting for monitoring, the first or second amplified pressure signal; converting the selected amplified pressure signal to an intermediate digital pressure signal; measuring, at a thermal sensor associated with the selected amplified pressure signal, a temperature; compensating, based on the measured temperature, the intermediate digital pressure signal to generate a compensated digital pressure output signal; and outputting the compensated digital pressure output signal.

A differential pressure transmitter is disclosed, which comprises a body for housing a high-pressure sensor and a low-pressure sensor, a plurality of high-pressure process connectors formed in said body and fluidly coupled to said high-pressure sensor for transmitting a first pressure of a process fluid to said high-pressure sensor, each of said high-pressure process connectors comprising a conduit having an opening for receiving the process fluid, a plurality of low-pressure process connectors formed in said body and fluidly coupled to said low-pressure sensor for transmitting a second pressure of a process fluid to said low-pressure sensor, each of said low-pressure process connectors comprising a conduit having an opening for receiving the process fluid, wherein said second pressure is equal to or less than said first pressure, wherein said openings of the high-pressure connectors are spaced relative to said openings of the low-pressure connectors to allow a plurality of pair-wise connections to the process fluid.

According to an example aspect of the present invention, there is provided a MEMS pressure sensor, comprising: a sensor portion comprising a deformable membrane and a first volume, and a valve portion comprising a first output to a first side of the pressure sensor and a second output to a second side of the pressure sensor. The valve portion is operable to close the second output and open the first output to equalize pressure in the first volume with pressure at the first side of the pressure sensor for calibrating the sensor; and close the first output and open the second output to equalize pressure in the first volume with pressure at the second side of the pressure sensor for pressure measurement.

A pressure sensor includes: a pressure sensor element; a metal adapter integrally attached to the pressure sensor element and defining therein a hole through which a pressure of a fluid to be measured is introduced to the pressure sensor element; a metal fitting member provided with a housing recess receiving the adapter and connectable to a connected member; and an operation member pressing a valve provided to the connected member and defining a communicating path through which a flow path, in which the pressure of the fluid to be measured is introduced, is in communication with the hole of the adapter. The adapter and the fitting member are connected to each other by plastic deformation. The operation member is a synthetic resin member including: a contact portion brought into contact with the adapter; and a pressing portion provided on a side opposite to the contact portion to press the valve.

There is provided a pressure measuring device including: a first pressure gauge connected to a processing chamber configured to process a process target and configured to measure an internal pressure of the processing chamber when the process target is being processed; a second pressure gauge connected to the processing chamber; and a first switching valve configured to disconnect the second pressure gauge from the processing chamber when the process target is being processed inside the processing chamber.

A module for a solenoid valve can include a body having a module inlet, a module outlet, a flow path fluidically between the inlet and the outlet, a module orifice and a module valve seat fluidically disposed in the flow path, a reservoir disposed within the body, a sensor in sensing communication with the reservoir, a first coupler configured to couple with a solenoid actuator and a second coupler configured to couple with a valve body. The flow path can include an inlet flow path from the module inlet to the module orifice and an outlet flow path from the module orifice to the module outlet. The reservoir can be in fluid communication with at least one of the inlet flow path and the outlet flow path. The module outlet can be disposed in fluid communication with the second coupler and configured to sealingly engage a valve seat.