Amprobe ULD-300 Ultrasonic Leak Detector

  • Tests the “air-tightness” of weather seals, tanks, ovens, refrigerators, etc.
  • Locating leaks in duct work
  • Finds the ends of buried PVC pipes
  • Detects any pressurized gas leak regardless of type CFC’s, HFC’s, Nitrogen, etc. (unaffected by contaminants)
SKU: 2734431 Category:


When leaks occur they often generate an ultrasonic frequency that is beyond human hearing. Amprobe’s ULD-300 converts these sounds into an audible range for easy detection. The ULD-300 tests pressurized air lines, refrigeration systems, and steam lines for leaks.


UT-300 Receiver
Operating Temperature 32 °F to 100 °F
Storage Temperature -40 °F to 150 °F
Weight 6.3 oz with battery
Dimensions 7.3 x 2.5 x 1 in
Frequency Response 35 kHz to 45 kHz + 6 db
Power Consumption 22 mA at 9 Volts DC
Battery Life 33 hours (9 V alkaline battery)
Performance Meets the ASTM Standard: ASTM E1211-07
Battery Test LED color indicator (Green-Good; Red-Replace)

What’s Included

  • UT-300 Receiver
  • Flexible tubing adapter
  • Tubular extension
  • Carrying case
  • Power parabola
  • Headphones
  • Batteries (installed)


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