Disclosed is a connecting device for connecting a gas sensor to a gas leak detector. The gas sensor includes an elongate sensor housing. The gas leak detector includes at least one gas connector adapted to be connected to the gas sensor. A guide rail connects to the gas leak detector, engaging with the sensor housing such that the gas connectors engage with at least one complementary second gas connector. A fastening claw includes two elastic spring legs arranged at one of the sensor housing and the gas leak detector. Each of the two spring legs includes a latching boss engaging the frontal end of the gas sensor opposite the second gas connector and a spreading element having two retaining arms. Each retaining arm includes a pulling edge, an inclined insertion portion along which the latching boss grips and pivots the spring leg, and an inclined disengagement portion.

This disclosure relates to a fluid conduit that incorporates sensors printed on an exterior wall of the fluid conduit. The sensors configured to sense an operating parameter of the fluid conduit. A protective layer is arranged to be deposited over at least selected portions of the printed electronic material.

An ultrasonic detector has a housing containing a transducer, a battery or other power supply, and any other necessary electronics. At a front end of the housing is a socket into which one of a plurality of interchangeable probes can be inserted. At the rear end of the housing, there is a handle by which an operative can hold the detector in use. On the inside of the housing, extending at least partially into the handle, is an elongate chamber within which at least one probe can be stored. A cover of the handle closes a rear end of the probe storage chamber and can be removed to expose a portion of the probe storage chamber and allow a probe to be inserted or removed.

A method for calibrating a test chamber, which encloses an interior volume (20), is designed as a film chamber (12) comprising at least one flexible wall region (14, 16), and is connected in a gas-conducting way to a pressure sensor (30), to a vacuum pump (26), and via a calibration valve (34) to a calibration chamber (36) enclosing a calibration volume (37), comprising the following steps: evacuating the film chamber (12); measuring the pressure difference inside of the film chamber (12); after the evacuation has been completed, connecting the calibration volume (37) in a gas-conducting manner to the interior volume (20) of the film chamber (12) while measuring the pressure change, wherein the pressure in the calibration chamber (36) is greater than the pressure in the film chamber (12) before the connection to the film chamber (12). A corresponding device is likewise disclosed.

A method for testing a leak detector by using a leak detection device having a test leak and which is provided with a cavity that can be filled with gas, including the following steps: a) filling the cavity with ambient air up to an interior pressure in the interior of cavity that corresponds to ambient atmospheric pressure, b) establishing an exterior pressure in the area surrounding the leak detection device that is lower than the interior pressure, c) measuring the leakage rate of the air flowing through the test leak from the interior to the exterior of the leak detection device, and d) establishing an atmosphere consisting of ambient air with ambient atmospheric pressure as exterior pressure in the area surrounding the leak detection device.

A built-in calibration sub-system of, or an auxiliary device to be used with, a normally closed water supply control system of the type that uses a single pressure sensor and a pressure decay versus time measurement to make volumetric flow determinations for water supply control purposes, including leak detection and flood risk mitigation is provided. The present disclosure provides a system that uses an auxiliary electrically actuated valve and an orifice to cause a controlled flow of water to discharge from a plumbing network over a pre-determined pressure range such that the normally closed water supply control system's microprocessor can calculate the calibration factor it needs that relates change in pressure over time to volumetric flow rate. Methods of calibration and testing of the leak detection feature of a normally closed water supply control system are also provided.

This disclosure relates to fluid conduit that incorporates sensors printed on an exterior wall of the fluid conduit configured to sense an operating parameter of the fluid conduit. A wireless communication device communicatively connected to the printed electronic material is configured to wirelessly transmit the operating parameter to a mobile device.

A method for leak testing includes a leak testing step and a reference leak step. In the leak testing step, a hollow work 20 as a test object is encapsulated in a work capsule 11. A test pressure is supplied to the work capsule 11 through a path 2a connected to the work capsule. A variation of pressure inside the work capsule 11 is detected in a condition in which the path 2a is shut-off, and a judgment is made whether a leakage through the work is generated based on the detected output. In the reference leak step, a reference leak device 30 having a known pinhole 31a is mounted on a work 20′ for reference leakage that is same as the work 20 as the test object. The work 20′ for reference leakage is encapsulated in the work capsule 11. The test pressure is supplied to the work capsule 11 via the path 2a, and a reference leakage is generated in the work 20′ for reference leakage via the reference leak device 30 in a condition in which the path 2a is shut-off. A variation of pressure inside the work capsule 11 accompanying the reference leakage is detected.

Systems and methods for determining cross-section profiles of underground fluid conveyance structures involves a memory configured to store a profile scan dataset of at least one pipe and at least one pipe template. A processor is configured to compare the profile scan dataset to one or more templates. Profile deviations in a pipe profile are determined using the comparison. A location and an areal measurement of the profile deviations is determined. A user interface is configured to present the profile deviations to a user.

A system and method for a remotely deployable, off-grid system to autonomously detect, quantify, and automatically wort emissions of methane (CH.sub.4) and other gases to the atmosphere, Automated CH.sub.4 emissions detection is accomplished by the use of commercially available CH.sub.4 sensors. CH.sub.4 accuracy is maximized by simultaneously measuring, and accounting for, undesired CH.sub.4 sensor response from interfering gases such as carbon monoxide (CO) and water vapor (H.sub.2O), and undesired CH.sub.4 sensor response from ambient temperature (T) changes. Automated CH.sub.4 emissions quantification is accomplished by calculating a leak rate (mass or volume per unit time) from the measured concentration enhancements using simultaneous measurements of wind speed and direction. Automated CH emissions reporting is accomplished following transmission of measured CH.sub.4concentrations via cellular wireless, radio, or satellite link to a central cloud-based server. Remote off-grid operation is accomplished by solar, wind, or other renewable energy source(s) that charge an on-board battery. This system offers a robust, unattended, and continuous CH.sub.4 monitoring and reporting capability to permit improved accuracy and efficiency of CH.sub.4 leak detection and repair (LDAR) from sources located in remote areas without electrical power, e.g., leak detection at well pads and processing facilities in oil and gas production areas, at concentrated animal feeding operations, and other methane sources.