A pressure switch is provided which enables an increased pressure tightness. A pressure switch comprises a diaphragm, a cap to define a storage space for pressure fluid, a plate-shaped stopper configured to limit a position of the diaphragm in the event of pressure variation to define a working position, a coupling section for coupling outer circumferences of the diaphragm, the cap and the stopper to form a diaphragm unit, a ring-shaped member formed with a substantially same diameter as the diaphragm unit, a switch element, and a body (a tubular section of a joint section and a switch holding tube) configured to accommodate the ring-shaped member and the diaphragm unit while clamping an outer circumference section of the diaphragm unit together with the ring-shaped member so that the ring-shaped member comes into pressure contact with the outer circumference section.

The application discloses an apparatus and a method for determining and/or monitoring at least one predefined filling level of a medium in a container at least with a sensor unit and an electronic unit, wherein the electronic unit is configured to apply an excitation signal to the sensor unit and to receive a reception signal from the sensor unit, and wherein the electronic unit comprises at least one first computing unit which is configured to determine at least the predefined filling level from the reception signal in a normal operating mode, a second computing unit which is configured to make a statement relating to the state of the sensor unit in a diagnostic operating mode, at least one buffer which is configured to store the at least one statement relating to the state of the sensor unit and is electrically connected to the first computing unit and to the second computing unit, and at least one switching element which can be used to switch back and forth between the normal operating mode and the diagnostic operating mode.

A pressure switch is provided which enables an increased pressure tightness. A pressure switch comprises a diaphragm, a cap to define a storage space for pressure fluid, a plate-shaped stopper configured to limit a position of the diaphragm in the event of pressure variation to define a working position, a coupling section for coupling outer circumferences of the diaphragm, the cap and the stopper to form a diaphragm unit, a ring-shaped member formed with a substantially same diameter as the diaphragm unit, a switch element, and a body (a tubular section of a joint section and a switch holding tube) configured to accommodate the ring-shaped member and the diaphragm unit while clamping an outer circumference section of the diaphragm unit together with the ring-shaped member so that the ring-shaped member comes into pressure contact with the outer circumference section.

A pressure switch is provided which enables an increased pressure tightness. A pressure switch comprises a diaphragm, a cap to define a storage space for pressure fluid, a plate-shaped stopper configured to limit a position of the diaphragm in the event of pressure variation to define a working position, a coupling section for coupling outer circumferences of the diaphragm, the cap and the stopper to form a diaphragm unit, a ring-shaped member formed with a substantially same diameter as the diaphragm unit, a switch element, and a body (a tubular section of a joint section and a switch holding tube) configured to accommodate the ring-shaped member and the diaphragm unit while clamping an outer circumference section of the diaphragm unit together with the ring-shaped member so that the ring-shaped member comes into pressure contact with the outer circumference section.

A multi-mode air compressor pressure switch is disclosed. A first mode of operation of the switch has a first range that includes a first cut-out pressure and a first cut-in pressure. A second mode of operation of the switch has a second range that includes a second cut-out pressure and a second cut-in pressure. The second range is smaller than the first range. The second mode of operation adds compressor output over the first mode of operation to extend operable time of a tool that is connected to a compressor that is controlled by the first mode and the second mode.

Embodiments herein are directed to a portable diagnostic tool. The portable diagnostic tool includes a tool body, a first hexagonal shape, a second hexagonal shape, and a plurality of legs. The tool body has four peripheral edges, a top face and a bottom face positioned on an opposite side of the tool body. The first and second hexagonal shapes are disposed within the tool body extending through the top face and the bottom face. The second hexagonal shape is larger than the first hexagonal shape. Each of the plurality of legs extend from the same one of the four peripheral edges. Each of the plurality of legs are spaced apart and extend an equal length. Each one of the plurality of legs has a first surface and a second surface. The second surface has a tapered portion with respect to the first surface.

Disclosed is an intermittent pressure switch for pneumatic valves to control pressure relief valves in oil and gas producing operations by directing the valve to open and close based on pressure parameters (pre)set by the user. This enables oil and gas wells to produce based on formation pressure buildup. The inventive switch consists of a box containing a pressure switch programmable from 0 to 5,000 psi, a 3-port solenoid valve, 24 volt battery system, solar panel, solar control charger, pressure gauge, circuit wiring, and pressure fittings.

According to various embodiments, an input device may be provided. The input device may include: a housing having an upper portion and a lower portion; a key top provided at the upper portion; a lever member coupled to the lower portion via a joint; a plunger; and a switch including a depressible portion coupleable to the key top via the lever member and the plunger; wherein the plunger is coupleable to the lever member at a distance from the joint which is different from a distance from the joint at which the depressible portion is coupleable to the lever member.

A pressure switch including: a spring blade; a ram pin having an angled bottom surface and laterally restrained in movement, where upward movement of the ram pin engages the spring blade such that the spring blade snap deflects to an engaged position, and where downward movement of the ram pin engages the spring blade such that the spring blade snap deflects to an unengaged position; a ball bearing in contact with the angled bottom surface of the ram pin; and an adjustment screw laterally restraining the ball bearing in movement, where a lateral inward movement of the adjustment screw relative to an outside surface of the pressure switch causes an upward movement of the ram pin, and where a lateral outward movement of the adjustment screw relative to the outside surface of the pressure switch causes a downward movement of the ram pin.

A flow switch including: a fluid inlet for receiving fluid in-line relative to a flow switch body; a poppet valve disposed in the fluid inlet and having a variable location relative to the flow switch body; an actuator pin affixed to the poppet valve; a helical spring disposed about the actuator pin, where the poppet valve is spring-loaded via the spring; and where the spring-loaded poppet valve is configured to move away from the fluid inlet with increasing volumetric fluid flow and towards the fluid inlet with decreasing volumetric fluid flow.