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division of BIOLAB |
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UE
Systems Ultrasonic Detection Equipment
Heat Exchangers, Boilers, Condensers
DESCRIPTION
Leak Detection of heat exchangers, boilers and condensers most often involves
inspection of three generic areas: tubes, tube sheets and housings. The
Ultraprobe can be used to detect leaks three ways: pressure leaks, vacuum leaks
or by utilizing a unique Ultratone™
Ultrasonic Tone transmission method.
While it may be necessary to take a unit off-line to inspect for leaks, with ultrasound, it is often possible to perform an inspection while on-line or at partial load.
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How Ultrasonic Leak Detection Works |
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Leak Detection Method
Most often leak detection is concerned with tube leaks. In heat exchangers and
condensers, there are situation where the end plates (headers) are removed or
water boxes are isolated while the unit is still on-line or at partial load. The
tube sheet are scanned while listening for a distinct "hissing" or
"rushing" sound of a leak. By adjusting the sensitivity of the
instrument to help discriminate direction, move in the direction of the tube
with the loudest sound.
Should the unit require off-line inspection, it is possible to use the Ultratone™ Ultrasonic Tone transmission method. Using ultrasonic transmitters such as UE Systems' patented Warble Tone Generators, the heat exchanger is flooded with intense ultrasonic sound waves on the shell side and the tube sheet is scanned for a distinct high pitched warbling sound coming from the leak. As above, adjust the sensitivity to discriminate direction and follow the sound to the loudest point which will be the leaking tube.
While under pressure or vacuum, fittings and casings may also be checked for leakage in a similar manner.
Recommended Accessories:
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