Leak-Detect LDT-1

Reduces the operating costs of compressed-air systems

For pinpointing leakages, especially in loud ambiance, where the leak is not hearable by ear as well for locating untight places in compressed-air systems where compressed-air escapes in a noiseless frequency.

The noise, which is created by air escaping from a leak, is detected by an ultrasonic receiver and converted in hearable noise and an optical indication.

CE mark

Special Features

for pinpointing leakages in compressed-air systems, pneumatic systems, valves, fittings, steam pipelines, oxygen sockets in hospitals as well as checking internal sealing of e. g. cockpits, pressure chambers etc.

For leakages with more than Ø 0.1 mm. Pressure of 1 bar is recommended. For leakages with a diameter smaller than 0.1 mm, a higher pressure is recommended (e. g. 8 bar)

Measuring principle: Locating leakages by ultrasonic receiver

Leak-detect LDT-1 signal indication over headset and LED indicator

For leakages at hard to reach places a gooseneck (260 mm) or a ultrasonic parabolic reflector (up to distance of 20 m) are optional available

Manufacturer calibration certificate is optional available

Standard Features

Easy to use

Rugged, handy plastic housing

Leak-detect for battery supplied operation

Available Models

ModelMeasuring Range
LDT-1Leakages with diameter bigger than 0.1 mm

Field of application:For leakages with diameter more than 0.1 mm and 1 bar pressure
Display:LED and acoustical
Power supply:9 V battery or rechargeable battery
Housing:Plastic (ABS)
Dimensions:180 x 90 x 70 mm
Weight:Device with probe 250 g / head phone 220 g
complete with carrying case: 1800 g

Specifications subject to change without notice!


Switch the leak-detect on by turning the potentiometer “Volume” clockwise until a light noise can be heard. The first yellow LED is on.
Move the unit with the sensor into the direction of the tubes or pipes which are to be controlled. The leakage is located when the sound has increased and the red LED`s are illuminated.

Handhabung Leckage-Suchgerät LDT-1

Accessories (optional)

  1. 55001H - Probe

    Sensor mit Schwanenhals für Leckage-Suchgerät LDT-1

    With gooseneck, Length 260 mm
    Order number: 55001H

  2. 55003H - Ultrasonic Transmitter

    Ultraschallsensor für Leckage-Suchgerät LDT-1

    For leakage-check of cabins of cars, cockpits or refrigerators etc.
    Order number: 55003H

  3. 55006H - Ultrasonic Parabolic Reflector

    Ultraschall-Parabolspiegel für Leckage-Suchgerät LDT-1

    with laser pointer
    for pinpointing a leakage at a distance from 5 – 20 m
    Order number: 55006H

  4. 55004H - Charger

    With 9 V rechargeable battery
    Order number: 55004H


Flowing gas from a leakage is a typical ultrasonic acoustic source with defined frequency, which cannot be heard by men.

Delivery Includes

Lieferumfang Leckage-Suchgerät LDT-1
Leak-Detect LDT-1 with carrying case, 1 probe 110 mm, 1 headphone, 1 detection probe for small leakages < 0.1 mm, 1 battery, manufacturer`s calibration report and operating instruction in German or English (as requested)

If you want to get a quote or want to place an order please contact us.

+49 (0)8638 9410-0

+49 (0)8638 4825