A micro pressure sensor includes a sense die mounted on a substrate, a ring structure encircling the sense die, and a silicone material is overmolded to an exterior of the ring structure to form a seal with the ring structure and fills an interior of the ring structure. The ring structure has one or more legs at bottom side, which are snap fitted to the substrate through mating holes such that the ring structure encircles the sense die; and a top surface of the silicone material receives the external pressure and transmits the external pressure to the sense surface of the sense die to generate an output signal on the sense die, wherein a processor converts the output signal into a pressure reading. The pressure-transmitting media transmits a received external pressure to the sense surface of the sense die to generate an output signal from the sense die, wherein a processor converts the output signal into a pressure reading.

A pressure sensor with calibration device includes a casing, a diaphragm, a sensing element, a medium, and at least one calibration element. The diaphragm is disposed on the casing, wherein the casing and the diaphragm define an accommodating space. The sensing element is disposed in the casing. The medium is filled in the accommodating space and in contact with the sensing element. The at least one calibration element is adjustably disposed at the casing and extended into the accommodating space to be in contact with the medium, wherein when the at least one calibration element is moved relative to the casing in a direction toward the accommodating space or in a direction away from the accommodating space, the at least one calibration element changes the pressure applied to the medium. The pressure sensor with calibration device adjusts the pressure value sensed by the sensing element via the calibration element.

One or more techniques and/or systems are disclosed for providing level sensing of a fluid in a dispenser canister. The sensor includes a housing having a fluid cavity configured to receive a fluid therein, with the housing having an open end and an opening in a wall opposite the open end. The sensor has a diaphragm coupled to and closing the open end of the housing and a sensing device having a sensing end. The sensing device is coupled to the housing with the sensing end extending into the opening of the wall of the housing, thereby not making direct contact with the fluid.

A pressure sensor includes a housing, an isolator positioned at a first end of the housing, and a first cavity formed between the first end of the housing and the isolator. The pressure sensor further includes a second cavity formed in the housing and a channel with a first end fluidly connected to the first cavity and a second end fluidly coupled to the second cavity. A pressure sensor chip is positioned in the second cavity and includes a first diaphragm positioned at a top side of the pressure sensor chip laterally outwards from the second end of the channel to prevent a fluid from jetting onto the first diaphragm.

A method for measuring pressure includes securing a flow channel to a chassis of a measurement device, the flow channel having a flexible wall with a first mechanical engagement feature presented from an external surface thereof. The method also includes engaging the mechanical engagement feature with a complementary engagement member connected to a force transducer, the securing being effective to immobilize the flow channel relative to the force transducer, and detecting at least one of the position and orientation of the of the flow channel relative to transducer and comparing to at least one of a predefined position and orientation. Further, the method includes generating a signal responsive to the detecting, flowing a fluid through the flow channel, and transmitting forces caused by displacement of the flexible wall through the complementary engagement member to the force transducer. Further, electrical signals are generated responsively to a state of the force transducer.

A device for connecting one or more sensors to a pipe, may include a sealed capsule and a pipe connector. The sealed capsule may include the one or more sensors and a non-corrosive liquid. The pipe connector may be configured to fix the sealed capsule to the pipe. The one or more sensors may be configured to measure pressure or pressure transient from a first liquid via the non-corrosive liquid.

In a pressure sensor, a cap-shaped shielding member (17) to block an electric field undesirable for a signal processing electronic circuit unit of a sensor chip (16) is supported by an end surface of a disk conductive plate (19) between one end surface of the sensor chip (16) in a liquid sealing chamber (13) and a diaphragm (32). The conductive plate (19) is electrically connected via a group of input-output terminals (40ai) and bonding wires (Wi), for example, and the sensor chip (16) is supported by one end portion of a chip mounting member (18) which is electrically connected via the group of input and output terminals (40ai) and the bonding wires (Wi).

Provided is a pressure detection device including a pressure detection unit configured to detect a pressure to be transmitted to a pressure sensor, and a flow channel unit on which the pressure detection unit is disposed. The pressure detection unit) includes a pressure sensor and a conductive protective film disposed in contact with the pressure sensor, the conductive protective film breaking contact between the pressure sensor and a fluid. The conductive protective film is formed of a conductive fluororesin material including a fluororesin material and a conductive material dispersed in the fluororesin material and is connected to a ground portion maintained at a ground potential.

A process fluid pressure measurement probe includes a pressure sensor formed of a single-crystal material and mounted to a first metallic process fluid barrier and disposed for direct contact with a process fluid. The pressure sensor has an electrical characteristic that varies with process fluid pressure. A feedthrough is formed of a single-crystal material and has a plurality of conductors extending from a first end to a second end. The feedthrough is mounted to a second metallic process fluid barrier and is spaced from, but electrically coupled to, the pressure sensor. The pressure sensor and the feedthrough are mounted such that the secondary metallic process fluid barrier is isolated from process fluid by the first metallic process fluid barrier.

A pressure sensor includes a housing with a cavity. The cavity includes a fill fluid and a compensation material. The fill fluid conveys a pressure from a process fluid through a diaphragm to a sensor. The compensation material reduces a difference of thermal expansions between the cavity and the fill fluid.