An apparatus and system are provided for detecting coolant leaks from connections to rack-mounted devices and managing the leak by directing liquid away from sensitive electrical components. On each device, a pan is connected to liquid couplings found on the rear of the device. A sensor tape is attached to a vertical section of the rack, e.g., on the coolant supply lines or housing. The pan collects leakage from the couplings and directs the leakage to the sensor tape, which is connected to a control unit. Upon liquid contacting the sensor tape, the control unit signals the detection of a leak. To prevent false positives due to incidental leakage, e.g., mere drops leaked upon connection to the coolant system, the pan may include a texture in the pan surface that retains a small amount of fluid.

The present disclosure provides a device and a method for detecting leak in a tankless water heater. According to the present disclosure, a leak detection device is disposed on a base of the tankless water heater. The leak detection device includes a leak sensor and at least one absorption arm extending from the leak sensor. The absorption arm wicks water and transports the wicked water towards the leak sensor. The leak sensor generates a signal indicative of leakage in the tankless water heater, in response to sensing wetness.

A rotary union includes a housing having a fluid inlet, a rotating machine component rotatably supported in the housing, a rotating seal member associated with the rotating machine component, a non-rotating seal member slidably and sealably disposed within the housing adjacent the rotating seal member, and an expandable seal disposed between and sealably engaging each of the non-rotating seal member and the housing. The expandable seal includes two end portions, one of the two end portions engaged to the non-rotating seal member and the other of the two end portions engaged to the housing, and an expandable portion disposed axially between the two end portions, the expandable portion having an axial length that varies based on a pressure of a hydraulic fluid that is present at the fluid inlet.

A system for detecting leaks comprises at least one pipeline element, a leak detection device, and a pre-formed, heat-shrinkable sleeve comprising at least one inlet aperture. A method of manufacturing the sleeve comprises the steps of applying a cross-linkable material around a standard-sized sleeve mold, cross-linking the material, removing the cross-linked material from the mold, heating and stretching the cross-linked material around a stretching sleeve mold, allowing the material to cool, and removing the cooled sleeve from the mold. A method of monitoring a leak comprises the steps of receiving the pipeline element in the sleeve and applying heat to the sleeve, whereby the sleeve shrinks and conforms substantially around the profile of the pipeline element and at least a portion of the leak detection device.

A device for detecting and signalising a leakage in a double-walled conduit system of a heat exchanger for heating fresh water by way of heat from waste water in the sanitary field as well as a heat exchanger including such a device. The device has an elastic element and a signalisation unit, wherein the elastic element is essentially liquid-tight and the signalisation unit is configured to generate an acoustic signal and the signalisation unit is activatable by way of a mechanical deformation of the elastic element.

A rotary device having a housing, a rotating machine component, a rotating member associated with the rotating machine component, a non-rotating member disposed within the housing adjacent the rotating member, and a sensor array disposed in the housing. The sensor array includes a plurality of sensing elements that are integrated with a control device and a wireless communication device. The wireless communication device is configured to communicate with a central control that is remotely located relative to the housing using electromagnetic waves.

A system for detecting leaks comprises at least one pipeline element, a leak detection device, and a pre-formed, heat-shrinkable sleeve comprising at least one inlet aperture. A method of manufacturing the sleeve comprises the steps of applying a cross-linkable material around a standard-sized sleeve mold, cross-linking the material, removing the cross-linked material from the mold, heating and stretching the cross-linked material around a stretching sleeve mold, allowing the material to cool, and removing the cooled sleeve from the mold. A method of monitoring a leak comprises the steps of receiving the pipeline element in the sleeve and applying heat to the sleeve, whereby the sleeve shrinks and conforms substantially around the profile of the pipeline element and at least a portion of the leak detection device.

The present disclosure provides a device and a method for detecting leak in a tankless water heater. According to the present disclosure, a leak detection device is disposed on a base of the tankless water heater. The leak detection device includes a leak sensor and at least one absorption arm extending from the leak sensor. The absorption arm wicks water and transports the wicked water towards the leak sensor. The leak sensor generates a signal indicative of leakage in the tankless water heater, in response to sensing wetness.

The present disclosure relates to a tangible, non-transitory, machine-readable medium, having machine-readable instructions to pair a water detection device of a plurality of water detection devices with a user account via a user device, receive a first signal indicative of a location of the water detection device from the user device, receive a second signal indicative of a personalized message to be sent to the user device upon a detection event of the water detection device, and display a list of the plurality of water detection devices and corresponding locations of each water detection device of the plurality of water detection devices on the user device.

The present disclosure relates to a water detection device that includes a water-activated battery configured to switch from a dormant condition to an active condition upon contact with water, such that the water-activated battery supplies an electrical voltage upon contact with the water, an electronic circuit configured to receive the electrical voltage from the water-activated battery, where the electronic circuit is configured to communicate with an external, electronic device via one or more wireless communication techniques when the electronic circuit is powered by the electrical voltage, and where communication between the electronic circuit and the external, electronic device is an uninterrupted communication when the electronic circuit is receiving the electrical voltage from the water-activated battery, and a housing configured to receive the water-activated battery and the electronic circuit, where the housing has passageways configured to facilitate movement of the water into the housing and toward the battery.