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www.reference.com/article/underground-water-leak-detector-81e9490027aab0d0

An underground water leak detector is a tool for locating leaks in underground pipes. Leak detectors employ sound-detection technology to pinpoint the exact location of the leakage. A typical unit provides a method of isolating the sound of a leak from the sound of normal water flow.

www.reference.com/article/companies-make-underground-water-leak-detectors-da593b73a117cd84

Companies that make underground water leak detectors include Fisher, Metrotech, SPX and Amprobe. These devices detect leaks using a variation of acoustic, ultrasonic and tracer-gas detection methods.

www.reference.com/article/vacuum-leak-detectors-9e2b2bdc79f146d

Inficon produces several models of Helium vacuum leak detectors, including Helium leak detector UL1000, Dry helium leak detector UL1000 Fab and Dry helium leak detector UL5000. Dry helium leak detector UL1000 Fab is designed for testing of semiconductor process tools, gas systems, hermetically seale

www.reference.com/article/use-metal-detectors-240650d86742e102

People often use metal detectors to search beaches, parks and similar areas for lost items made of metal, such as coins or jewelry. The hobby typically involves scanning a specific area, sometimes removing surface debris, until the detector picks up an object. The person then digs into the ground to

www.reference.com/world-view/smoke-detector-going-off-smoke-65959674070eaa7b

A variety of external elements can cause a false alarm from a standard ionization smoke detector. Loss of power, humidity, dust, insects and debris from common household appliances can all cause a false alarm.

www.reference.com/article/leaks-water-line-c15c9819fddd2eed

For most water lines inside homes, the easiest way to find a leak is to inspect the entire plumbing system for visible water. For buried or otherwise inaccessible water lines however, finding the leak requires using a sensitive audio instrument. These sonic instruments require training to use proper

www.reference.com/article/install-water-detector-circuit-123a18dd1081feae

To install a water detector circuit, take a perforated board of about 2 inches by 4 inches and wind two coils of 22 AWG wire around it. Mount the sensor to the water alarm circuitry box using foam tape or silicone adhesive. To enable battery monitoring, connect the analog input pin to an output pin.

www.reference.com/article/metal-detectors-work-72393c4668368ac3

Metal detectors work by sending and receiving electromagnetic fields. A search coil sends an electromagnetic field into the ground. That field energizes any metal object it contacts, then the object sends an electromagnetic field back up. Once that field reaches the search coil, it is detected and a

www.reference.com/article/smoke-detector-work-991bacab76fb9c52

The two most common types of smoke detectors are ionization detectors and photoelectric detectors. Ionization smoke detectors sound when smoke blocks the flow of ions they generate. A photoelectric smoke detector goes off when smoke particles bounce light from its LED against its photocell.

www.reference.com/article/detect-water-leak-c5325b7103322da0

Use the water meter for your home to detect a water leak. Choose a time when no one is using water and make sure all appliances, including ice makers, are off before taking the initial reading. After one to two hours read the meter again. If the reading has changed, there is a water leak.