Multi-Echo Ultrasonic Thickness Gauge Multi-Echo Ultrasonic Thickness Gauge

Multi-Echo Ultrasonic Thickness Gauge

The LM series ultrasonic thickness gauge can measure the thickness of metal materials, high-temperature pipelines, pipes, plates (steel plates, aluminum plates), plastics, iron pipes, PVC pipes, glass and other materials. Can be applied to the detection fields of manufacturing industry, metal processing industry, chemical industry, commodity inspection industry and the like, can also monitor various pipelines and pressure vessels in production equipment and monitor the thinning degree of the pipelines and pressure vessels after being corroded in the use process, and is a corresponding instrument for material protection.
  • BrandLABOAO
  • ModelLM-3
  • PortAny port in China
  • PackagePlywood case package
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Our company has introduced a hand-held precision ultrasonic thickness gauge LUM-3 using single crystal delay line probe, which uses single crystal delay probe and uses multiple echoes to improve accuracy, so that the resolution can reach 0.001mm and the lower limit of measurement can reach 0.30 mm. LM-3 has two working modes: normal and precise. The common mode adopts the interface wave-echo method, and the measuring range is 1.5 mm ~ 20 mm; The precision mode adopts echo-echo method, and the measurement range is 0.30mm ~ 10 mm. 

Suitable for measuring flat sheet steel parts.


1. High precision, 0.001mm resolution 

2. Suitable for measuring thin materials, can accurately and reliably measure 0.25mm flat thin steel plate material 

3. Can penetrate through the coating, such as paint layer on the material, without polishing, can directly measure the thickness of the substrate





128× 64 Dot Matrix LCD Display   (EL Backlight)

Working principle

Interface wave-echo mode (normal   mode)

echo-echo mode (precision mode)

Measuring range

1.5~20mm (Normal mode) 0.3~10mm (Precision   mode)

Unit and Display Resolution

 Millimeter-0.001,0.01,0.1   inch-0.0001,0.001,0.01

Indication error

±0.01 mm (below 3mm) ;±0.05 mm (below   20 mm)

 Calibration mode

One-point calibration, two-point   calibration

The measurement update rate

For routine measurement: 4Hz;

 scanning the minimum value:25 Hz

The sound speed range of the   material

10009999m/s or 0.03940.3937in/us

The storage function

divided into 5 arrays, which can   store 500 thickness values.

Sound speed storage

store the sound speed of 5   different materials.


Chinese or English

Power supply

two 1.5V AA batteries. When the   power is insufficient, there will be a low voltage prompt.

Operating time

alkaline battery can be used for   200 hours (no backlight)

Automatically shut down

after 5 minutes without   operation

Working temperature

-10 ~+50, with special   requirements up to -20




200g (including battery)

Standard configuration

LM-3 thickness gauge, single crystal probe, instrument   box, two alkaline batteries, coupling agent, operation manual, certificate of   approval and packing list

Optional accessories



Contact   diameter





Configuration list



Coupling agent






Packing document


Instrument seal box


Note: If send it by air, not   including batteries, it’s an empty bottle for   Coupling agent.

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