+86 371-61653992 sales@laboao.com
Multi-Echo Ultrasonic Thickness Gauge Multi-Echo Ultrasonic Thickness Gauge
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.
  • ModelLM-3
  • BrandLABOAO
  • PortAny port in China
  • PackagePlywood case package
Request QuotationChat Now
  • Whatsapp

    WhatsApp Chat

  • WeChat

    WeChat Chat



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.


  1. Factory direct sales with competitive price.
  2. Premium quality with CE & ISO certification.
  3. Strong product OEM & ODM customization capability.
  4. Promise production & on-time delivery.
  5. Perfect after-sales service, free product accessories.
  6. 15 years of experience in R&D and production of ultrasonic thickness gauge machine.
laboao certification


We have a standard production workshop and a complete production team. They always produce a serious and responsible attitude to produce each product. Our R&D team is made up of multi-aspects professional engineers such as design engineer,technology specialist ,qualified specialist and process control manager, etc. Our qualified specialists strictly realize the process comprehensive supervision based on our quality process control system, which contains products design, research and development, test, production, quality inspection and packaging.

laboao factory


Our product packaging has been proven over the long term and we usually have plywood boxes or cartons with trays. We will arrange the appropriate packaging according to the weight and size of the goods. Of course, you can also choose the packaging form.

laboao packaging and shipping


Our laboratory instruments and equipment are used in many scientific laboratories, scientific research institutions, universities, hospitals, centers for disease control and other institutions, and are combined with many well-known biopharmaceuticals, new energy, electronics companies, food processing, environmental protection, etc. Enterprise cooperation, our stable and reliable products are exported to more than 120 countries around the world, and have been highly recognized by them, believe LABOAO, we grow together!

laboao customer cases


Authenticity GuaranteedWe assure you purchase our products are 100% certified products.
24*7Hours ServiceProvide 7*24 hours service telephone & support email to help you solve problems quickly.
Technical SupportProvide equipment installation, adjustment, operation training, etc.
1 Year WarrantyFree maintenance and accessories within warranty period(not caused by human factors).


Get Factory Price in 1 Hour?