An apparatus and associated method, for controlling signal passage, includes a first passageway for a first fluid, a second passageway for a second fluid, and an interposed chamber. A first, movable diaphragm at a first chamber junction and a second, movable diaphragm at a second chamber junction, with a third fluid bound there between and interposed between the first and second passageways. A device varies a volume of the third fluid bound between the diaphragms and thus moves the diaphragms. A movable member and a reservoir of the device are configured such that the movable member is sufficiently movable to increase the volume of the reservoir to remove a sufficient portion of the third fluid bound between the first and second diaphragms from the chamber to cause the first and second diaphragms to be pressed against the first and second walls, respectively.

A pressure-sensor device has a component sensitive to pressure, a structure for housing or supporting the pressure-sensitive component, and at least one elastically deformable body that is overmoulded to the housing or supporting structure.

Aspects of the subject technology relate to an apparatus having a housing, including a port exposed to an environment. The apparatus includes a pressure sensor disposed within the housing to measure a pressure of the environment. The pressure sensor includes a membrane to facilitate detection of a presence of an aggressor by using dynamic response analysis.

A system for controlling the position of a diaphragm in a diaphragm-containing pressure pod, is provided. The system can include a peristaltic pump, a pressure pod having a flow-through fluid side and a gas side that are separated by a diaphragm, and a pressure sensor operatively connected to the gas side. The pressure sensor is configured to sense pulses of pressure resulting from movement of the diaphragm and caused by the action of the peristaltic pump. A gas source and a valve can be in fluid communication with the gas side of the pressure pod and can be configured to provide gas to, or vent gas from, the gas side. A controller receives pressure signals from the pressure sensor and controls the valve in response, and in so doing, controls the position of the diaphragm. Methods for positioning the diaphragm are also included.

A system for controlling the position of a diaphragm in a diaphragm-containing pressure pod, is provided. The system can include a peristaltic pump, a pressure pod having a flow-through fluid side and a gas side that are separated by a diaphragm, and a pressure sensor operatively connected to the gas side. The pressure sensor is configured to sense pulses of pressure resulting from movement of the diaphragm and caused by the action of the peristaltic pump. A gas source and a valve can be in fluid communication with the gas side of the pressure pod and can be configured to provide gas to, or vent gas from, the gas side. A controller receives pressure signals from the pressure sensor and controls the valve in response, and in so doing, controls the position of the diaphragm. Methods for positioning the diaphragm are also included.

An apparatus and associated method, for controlling signal passage, includes a first passageway for a first fluid, a second passageway for a second fluid, and an interposed chamber. A first, movable diaphragm at a first chamber junction and a second, movable diaphragm at a second chamber junction, with a third fluid bound there between and interposed between the first and second passageways. A device varies a volume of the third fluid bound between the diaphragms and thus moves the diaphragms. A movable member and a reservoir of the device are configured such that the movable member is sufficiently movable to increase the volume of the reservoir to remove a sufficient portion of the third fluid bound between the first and second diaphragms from the chamber to cause the first and second diaphragms to be pressed against the first and second walls, respectively.

A high pressure gauge contains: a frame, a holder, a film, a cylindrical support, an indicator set, a screwing element, a threaded column, and a push rod, wherein a seal ring is retained between the channel and the push rod. The central disc is defined between the film and a tab of the screwing element, when the push rod acts on the screwing element, the screwing element drives the central disc to push the film upward, and the central disc exerts a force on the film. The push rod has a C-shape retainer located in a part of the holder between the screwing element and the threaded column, when a pressure of the push rod disappears, the push rod is urged by the indicator set to move downward, and the C-shape retainer is biased against the threaded column so as to avoid a removal of the push rod.

An apparatus and associated method, for controlling signal passage, includes a first passageway for a first fluid, a second passageway for a second fluid, and an interposed chamber. A first, movable diaphragm at a first chamber junction and a second, movable diaphragm at a second chamber junction, with a third fluid bound there between and interposed between the first and second passageways. A device varies a volume of the third fluid bound between the diaphragms and thus moves the diaphragms. A movable member and a reservoir of the device are configured such that the movable member is sufficiently movable to increase the volume of the reservoir to remove a sufficient portion of the third fluid bound between the first and second diaphragms from the chamber to cause the first and second diaphragms to be pressed against the first and second walls, respectively.

A system for controlling the position of a diaphragm in a diaphragm-containing pressure pod, is provided. The system can include a peristaltic pump, a pressure pod having a flow-through fluid side and a gas side that are separated by a diaphragm, and a pressure sensor operatively connected to the gas side. The pressure sensor is configured to sense pulses of pressure resulting from movement of the diaphragm and caused by the action of the peristaltic pump. A gas source and a valve can be in fluid communication with the gas side of the pressure pod and can be configured to provide gas to, or vent gas from, the gas side. A controller receives pressure signals from the pressure sensor and controls the valve in response, and in so doing, controls the position of the diaphragm. Methods for positioning the diaphragm are also included.

A medical liquid-pressure-detecting device capable of detecting both the negative and positive pressure of liquid, whereby the misconnection of the device to a liquid flow route can be prevented. A medical liquid-pressure-detecting device includes a chamber unit having an inlet that liquid flowing in a flow route is taken in and an outlet that the liquid is discharged, the chamber unit storing the liquid by a predetermined amount; and a diaphragm dividing the chamber unit into a liquid chamber and a gas chamber, the diaphragm being deformable in accordance with a pressure of the liquid, the medical liquid-pressure-detecting device detecting a pressure of liquid in the flow route on the basis of a change in the pressure in the gas chamber that is caused by the deformation of the diaphragm that includes a negative-pressure-detecting region that deforms toward one side when a negative pressure is generated in the liquid stored in the liquid chamber, and a positive-pressure-detecting region that deforms toward an other side when a positive pressure is generated in the liquid chamber.