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Ultrasonic Leak Detector 20-100kHz (GS-5800) with Case

Model #: GS-5800

UPC: 0810106421193

Condition: New

Regular Price: $279.95 $199.00

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Lutron Ultrasonic Leak Detector is designed to locate the source of the ultrasonic emissions created during small air or gas leaks.

The ultrasonic leak detector picks up the noise which is generated by gas or air leaks, as well as high pressure liquid leaks. The leakage level is displayed by a Bargraph LED Display Panel, and converted to an audible sound by either internal buzzer or with an external earphone (optional). By detecting the ultrasonic sound created by turbulence and friction in industrial equipment, this instrument can help pinpoint compressed air leaks, refrigerant leaks, vacuum leaks, worn bearings, and internal leaks through valves and steam traps.

  • Leakage Indicator with a Bar Graph LED display panel and an audible tone.
  • Creates an audible tone by dividing the ultrasonic sound by 32.
  • Time and convenience are also improved with ultrasonic detection since equipment may be tested while on-line.
  • The LED display indicator of the detector is a relative measurement only.
  • Frequency response: 20kHz to 100kHz.
  • Power supply: (1) 9v alkaline battery or equivalent.
  • Power consumption: Approx. 17mA DC.
  • Operating temperature: 32° to 122°F (0° to 50° C).
  • Operating humidity: less than 80% RH, non-condensing.
  • Earphone jack.
  • Dimensions: 10 x 2.8 x 1.1 inches (255x70x28mm) HxWxD.
  • Weight: approx. 0.57 LB (including battery).

Supplied with:

Optional High Frequency Transmitter GS-400

Lutron High Frequency Transmitter


  • The human ear can hear sound frequency up to 18 kHz. The sound frequency above 20 kHz is categorized as ultrasonic sound which is not audible.
  • Ultrasonic sound is very directional in nature. We can utilize this nature to pinpoint the exact origin of the sound source &/or where the leak is located.
  • Physics tells us that the gas always flows from the higher pressure region to the lower one. When the pressure difference is only a small opening, the turbulence created by the gas through that small hole then generates an ultrasonic sound.
  • When any gas flows through a small opening at a rate greater than 10 F-5 atmospheric ml/sec(milliliter per second), the gas is then generally viewed in the viscous flow dominion. As you know, the bigger the pressure difference across an opening, the faster the velocity. As the velocity increases, the frequency of the emitted ultrasonic sound will become higher too. The overall spectra of the emitted ultrasonic sound is generally called "white noise".
  • The velocity and volume of a leaking gas are affected by the viscosity of the gas. The higher viscosity of the gas, the velocity is slower and the volume is lower through the opening.
  • The Lutron ULTRASONIC GAS LEAKAGE DETECTOR was designed based on above principals.

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