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2. Smoke testing (mechanical) - Wikipedia

   en.wikipedia.org/wiki/Smoke_testing_(mechanical)

   In woodwind instrument repair, a smoke test involved plugging one end of an instrument and blowing tobacco smoke from the tester's mouth into the other to test for leaks. Escaping smoke revealed improperly seated pads and faulty joints (i.e. leaks). After this test the instrument was cleaned to remove nicotine and other deposits left by the ...

3. Duct leakage testing - Wikipedia

   en.wikipedia.org/wiki/Duct_leakage_testing

   Duct leakage test in the US. A duct leakage tester is a diagnostic tool designed to measure the airtightness of forced air heating, ventilating and air-conditioning (HVAC) ductwork. A duct leakage tester consists of a calibrated fan for measuring an air flow rate and a pressure sensing device to measure the pressure created by the fan flow.

4. Leak detection - Wikipedia

   en.wikipedia.org/wiki/Leak_detection

   A leak appearing within an analytic region (a rule added to the camera) is immediately analyzed for its attributes, including thermal temperature, size, and behaviour (e.g. spraying, pooling, spilling). When a leak is determined to be valid based on set parameters, an alarm notification with leak video is generated and sent to a monitoring station.

5. Smoke testing (electrical) - Wikipedia

   en.wikipedia.org/wiki/Smoke_testing_(electrical)

   Smoke testing refers to various classes of tests of systems, usually intended to determine whether they are ready for more robust testing. The expression probably was first used in plumbing in referring to tests for the detection of cracks, leaks or breaks in closed systems of pipes . [ 1 ]

6. Gas detector - Wikipedia

   en.wikipedia.org/wiki/Gas_detector

   Gas leak detection is the process of identifying potentially hazardous gas leaks by sensors. Additionally a visual identification can be done using a thermal camera These sensors usually employ an audible alarm to alert people when a dangerous gas has been detected.

7. Sulfur sticks - Wikipedia

   en.wikipedia.org/wiki/Sulfur_sticks

   The sulfur stick is lit and burns with an open flame, [1] and the color of the sulfur smoke is used to find the leak. When there is no ammonia present, the smoke is colorless, but the combination of sulfur and ammonia vapors produce a white fog. [2] [3]