A fluid detection system includes a fluid detection sensor disposed at a fluid sensing portion of the system, and a reference sensor disposed at a reference sensing portion of the system. The detection sensor and the reference sensor are subject to at least one common ambient environmental condition, such that the detection sensor exhibits an electrical characteristic that is different from an electrical characteristic of the reference sensor when fluid contacts the detection sensor. The fluid sensing portion may be within an internal fluid passage of a conduit that is removably couplable to a fluid device. Alternatively or additionally, the fluid sensing portion may be disposed in a fluid flow path, such as a leak path, in a permanent structure of a fluid device. The reference sensor may be disposed in a location away from and/or intentionally divided from the fluid flow path. The system may include a warning system.

The present invention relates to construction foil (1), with a multilayer layer structure (3) comprising a carrier layer (2) and a textile layer (11), wherein an electronic unit (4) comprising at least one moisture sensor (6) is printed on the outer side (13) of the carrier layer (2), wherein the textile layer (11) is water-permeable, preferably water-absorbent, wherein the electronic unit (4) is provided between the carrier layer (2) and the textile layer (11), and wherein the moisture sensor (6) is in direct contact with the textile layer (11), in particular is arranged on the textile layer (11).

A leak in the membrane of a generally horizontal roof support deck includes dividing the membrane into separate zones and locating a sensor to detect moisture underneath the membrane. A unique digital code address is assigned to sensor where inputs of the sensors are connected to a single power and signaling cable system using a daisy chain. The serial bus controller is to interrogate each of the sensor devices using the address to identify zones where moisture is detected. A transmitting antenna is provided at each sensor which is switched on when moisture is detected for detecting of the sensor from above the membrane by a utility locate device to confirm the location of the sensor.

A leak in the membrane of a generally horizontal roof support deck includes dividing the membrane into separate zones and locating a sensor to detect moisture underneath the membrane. A movable scanning device carried by a worker has a power supply antenna for supplying power by an electromagnetic wave to the sensor and the worker moves the scanning device to selected ones of the zones. At each selected zone the power supply antenna activates the sensor in the zone and the sensor to emits signals related to the moisture underneath the membrane as detected by the sensor device which are detected and recorded at the mobile scanning device.

A leak detection system fora server rack can include a detection channel that has a top region and a bottom region. The detection channel includes one or more openings at the top region. Each opening is to receive an outlet port of a server chassis installed in the IT rack. A cover for each of the one or more openings is arranged over the one or more openings when the outlet port is not present in the one or more openings and moves to allow entrance of the outlet port when the outlet port is inserted into the one or more openings. A fluid sensor for each of the one or more openings is arranged within the detection channel to detect a fluid that is deposited from the outlet port. Each fluid sensor is positioned within the detection channel to optimally detect presence of the fluid.

An observed operational state can include an operational state of one or more system devices. A sensor can emit, in response to a detected observable condition reflective of a given operational state, a simulated signal reflective of a different operational state as a proxy for the detected condition. A controller receiving such a proxy signal can, at least partially responsively to the proxy signal, issue a command corresponding to the given operational state. For example, a leak detector can emit in response to a detected leak, or a flow-rate sensor can emit in response to a detected flow-rate of a liquid, a simulated fan-speed tachometer signal representative of a selected fan speed. At least partially in response to observing a simulated tachometer signal, a controller can issue a system command corresponding to an underlying system condition for which the simulated tachometer signal is a proxy.

Methods, systems, and devices for designing and implementing cooling fluid distribution in a computing environment such as a data center as disclosed. The disclosed design may reduce the impact cooling fluid leaks may have on the computing environment and other rack based systems. The disclosed methods and systems may include structures for containing cooling fluid leaks and detecting cooling fluid leaks. The structures may be movable between positions in which connectors for forming fluid connections are exposed and positions in which the connectors are contained. Containing and detecting cooling fluid leaks may allow for proactive action prior to significant damage to the computing environment.

Methods and apparatus for leak isolation and detection are disclosed. A disclosed example apparatus includes first housing portion to be coupled to a fluid manifold with a first seal positioned therebetween, the manifold corresponding to a thermal cooling loop associated with cooling of a compute device, a second housing portion to be coupled to the first housing portion with a second seal positioned therebetween, the first and second seals to define a substantially sealed internal volume that at least partially surrounds the manifold, and a sensor in the internal volume to detect a presence of leaked fluid in the internal volume.

The present invention relates to a phase separation sensor which can easily change its direction due to its flexible feature without using a corner connector even at a position limited in space or at a narrow space, and can separate and sense water and chemical solution so as to be easily used in outdoor environment exposed to rain, snow, hail or others. The phase separation sensor includes: a detection part (100) having a pair of detection lines (110, 120) spaced apart from each other in a width direction to be arranged side by side; and an insulation part (200) having insulation films (210, 220), which have detection holes (210a, 220a) formed at equal intervals in a longitudinal direction to be opposed to the detection part (100) and adhesive layers (211, 221) formed at areas of the insulation films (210, 220), which touch the detection lines (110, 120).

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.