The present disclosure provides a pressure measuring instrument which comprises a gauge body, a connecting component and a pushing component, the connecting component comprises a first connecting member and a positioning sleeve which are connected with each other to form a corotating relationship, and the first connecting member comprises a first external thread section and a second external thread section connected to each other, and the first external thread section is used for a pressure-measuring hole threaded with a pressure vessel, the second external thread section protrudes from the pressure-measuring hole, the positioning sleeve is rotatably screwed to the second external thread section, and the positioning sleeve is configured to provide a force to the pressure vessel, and the pushing component is configured to pass through the connecting component and be pushed by a fluid in the pressure-measuring hole to push against a pressurize unit of the gauge body.

Contact-force-sensing systems that can provide additional information about the forces that are applied by catheters and other devices to cell walls and other surfaces. One example can provide directional information for a contact-force-sensing system. For example, magnitude, plane angle, and off-plane angle information can be provided by a contact-force-sensing system. Another example can provide guiding functionality for a contact-force-sensing system. For example, a contact-force-sensing system can provide tactile response to a surgeon or operator to allow a device to be accurately guided though a body.

An annular fluidic device includes a closed annular tube, wherein the tube includes at least one portion of transparent wall and contains a rigid torus bathed in a fluid filling the internal volume of the tube, in that the torus is arranged to be movable in the tube, and wherein at least one permanently polarised magnetic element integral with the torus allows it to undergo a moment of force causing it to be aligned in the direction of the external magnetic vector. A watch case can include this device.

A pressure sensor for a gas-filled cylinder, which comprises a body from which a connector protrudes for coupling to an opening for filling a gas-filled cylinder with gas, a first through hole which passes through the connector and the body and a second hole which connects the first through hole to a sensor element which is connected electrically to at least one electronic board for processing a signal that can be detected by the sensor element.

A liquid encapsulation device for embedding sensor is provided. The liquid encapsulation device comprises a substrate having an upper surface with a central concave portion; at least one protection layer sealed on the upper surface of the substrate; and at least one sensor fixed on the protection layer. Wherein, the central concave portion is filled with liquid and the sensor is arranged above the central concave portion.

A method for determining the amount of a gas present in a battery cell, whereby the battery cell has an initial volume, comprises at least the following steps: a) immersing the battery cell into a non-conductive liquid having a defined density at a first ambient pressure; b) generating a lifting force that acts in the opposite direction of a downforce of the battery cell; c) changing the first ambient pressure to a second ambient pressure, and measuring the buoyancy force—which is dependent on the ambient pressure—of the battery cell in the liquid; and d) measuring the amount of gas present in the battery cell, taking into account the first and second ambient pressures, the buoyancy forces ascertained for these ambient pressures, the temperature of the non-conductive liquid and the density of the liquid.

Combining several capillary tubes in one depth gauge, which measure the depth in different ranges, will allow obtaining a measuring scale close to linear and eliminate the main disadvantage of a capillary depth gauge.

The present disclosure provides a pressure measuring instrument which comprises a gauge body, a connecting component and a pushing component, the connecting component comprises a first connecting member and a positioning sleeve which are connected with each other to form a corotating relationship, and the first connecting member comprises a first external thread section and a second external thread section connected to each other, and the first external thread section is used for a pressure-measuring hole threaded with a pressure vessel, the second external thread section protrudes from the pressure-measuring hole, the positioning sleeve is rotatably screwed to the second external thread section, and the positioning sleeve is configured to provide a force to the pressure vessel, and the pushing component is configured to pass through the connecting component and be pushed by a fluid in the pressure-measuring hole to push against a pressurize unit of the gauge body.

Systems and methods for pressure measurement are provided. A ludion with a trapped gas bubble floats between two liquids. Pressure acting upon the liquids causes the bubble to expand or contract, resulting in movement of the ludion which can be measured and correlated with pressure change. Pressure measuring device can measure pressures from 0.05 inHg to 110 inHg with a four-to-one Test Accuracy Ratio (TAR) without using mercury.

Combining several capillary tubes in one depth gauge, which measure the depth in different ranges, will allow obtaining a measuring scale close to linear and eliminate the main disadvantage of a capillary depth gauge.