LS212 Ultrasonic Thickness Gauge

Non-destructive for metal, glass, ceramics and plastics

Measure 0.8-350mm material, resolution up to 0.001mm
Two measurement modes: QC Mode/Statistics Mode
Four types of probes applicable, measuring various materials
Automatic Gain switchable

Request A Quote User Manual

LS212 ultrasonic thickness gauge is easy to operate and uses the principle of ultrasonic pulse reflection to test the thickness of materials. The instrument can be equipped with four types of probes: standard probe, micro-diameter probe, coarse crystal probe and high temperature probe, and is professionally used for thickness measurement of metals (such as steel, aluminum, copper, etc.), plastics, ceramics, glass, fiberglass and other materials that can transmit ultrasonic waves. The instrument adopts professional chip design of timing, resolution up to 0.001mm.


In many industries, It is essential to mesure the wall thickness to confirm the condition of the material for the normal running of the items or structure safety. LS212 ultrasonic thickness gauge can be widely used in testing the thickness of various accessories or metallic structure to check them whether to be repaired or changed such as ships, tanks, pipes or steel structure. The gauge is applicable for petroleum, chemical, metallurgical, shipbuilding, aviation and aerospace various fields.


Probe Standard Probe Micro-diameter Probe Coarse Crystal Probe High Temperature Probe
Probe Model 5MHZφ10 7MHZ PT-06 2MHZ ZT-12 5MHZ GT-12
Minimum measuring area   φ10mm φ6mm  φ12mm φ12mm
Probe size φ18*26mm φ15*25mm φ18*28mm φ43*48mm
Measuring   Range(45#steel) 0.8-350mm 0.75-80mm 3-200mm 3-200mm
(H is the standard value)
Pipe measurement lower limit
(45# steel)
φ20*3mm φ20*2mm φ30*4mm φ30*4mm
Exposure temperature -10~60℃ -10~60℃ -10~60℃ -10~500℃
Application Measure conventional workpieces Measure surfaces and small workpieces Cast iron and some materials with large crystal particles Measure high temperature workpieces
Parameters Values
Resolution 0.8-10mm:0.001mm
Sound Velocity Range 1000~9999m/s
Probe 5MHz φ10 double-crystal probe
Display 240 * 160 dot matrix LCD
Unit mm/inch
Power Supply 2pcs of 1.5V AAA alkaline battery
Host Size 142 * 72 * 28 mm
Weight About 230g
Operation Temperature Range -10~60℃,0~85%RH(No condensation)
Storage Temperature Range -10~60℃,0~85%RH(No condensation)


Ultrasonic double crystal probe

The gauge probe employs a double crystal transducer consisted of two independent crystals separated by an acoustic barrier. One crystal sends ultrasonic pulses, and another is responsible for receiving them. The probe is highly sensitive and can effectively reduce clutter, and the probe housing is made of stainless steel, which is hard and durable

Matching four types of probes, intelligent identification probes

The instrument can be matched with four types of probes: standard probe, micro-diameter probe, coarse crystal probe and high-temperature probe, with intelligent identification of the probe model, and the instrument adapts to the display interface according to the probe type

Automatic Gain switchable

Some materials are good conductors of sound and some are not. For the latter, the meter can switch the Gain freely which is to amplify the ultrasonic signal so that the emitted pulse is accurately captured by the transducer as it propagates, and obtains accurate data

Excellent Timer chips provide fast, accurate readings

LS212 ultrasonic thickness gauge calculates the material thickness by sound velocity and the time taken between the emitted pulse and the detected echo, a precision timing chip can bring the user the accurate time to get the accurate data

High precision, high resolution

The accuracy of the tester can reach ±0.05mm to ensure that it can pass the Chinese national authoritative metrology institute testing. And when testing the thickness of 0.8mm-10mm material, its resolution is 0.001mm

Various materials can be measured

The gauge is used to measure the thickness of metallic materials (steel, iron, aluminum, copper), non-metallic objects (ceramics, plastics and glass) and any other ultrasonic good conductors, where the other surface of the material must be parallel or coaxial to the measured surface during the test.When measuring on curved surfaces, the split surface of the probe should be measured perpendicular to the axis of the surface.

Measurement mode with penetration coating

When there is a coating or paint layer on the surface of the workpiece, it will make the measurement results inaccurate. The standard probe with penetration coating measurement mode can accurately measure the actual thickness of the substrate under the workpiece coating without removing the coating from the workpiece surface.

Equipped with Bluetooth APP

Instrument is equipped with Bluetooth communication module, which can be connected to cell phone APP to achieve multi-group data storage and measurement data sharing.

QC Mode and Statistics Mode

LS212 ultrasonic thickness gage sets up two measurement mode: QC mode and statistics mode. The former is allowed to set upper and lower limits to check the problem areas by prompting NG or PASS. It will count maximum, minimum and average values of data in statistics mode.

Provide sound velocity of multiple materials

LS212 already contains the velocities of several common metallic (such as iron, copper, aluminum) and non-metallic materials (plastics, ceramics, plexiglass) as well as other objects and the user are not required to find them separately

Sound velocity can be measured with the thickness in turn

The tester can reverse the sound velocity of the material based on the known thickness and measurement results. And the instrument can test irregular materials of the same components as the materail whose thickness can be measured

Comfortable grip with non-slip silicone keys

LS212 ultrasonic thickness gauge housed in ABS plastic shell with non-slip silicone keys, has a comfortable grip and easy to operate

Evident keypad, Simple using methods for quick menu navigation

Selectable display languages

Inch/mm switchable

Qualifications and Standards

LS212 conforms to the following standards: 

JJF 1126-2044 Calibration Specification for Ultrasonic Thickness Instruments

The certificate of LS212 ultrasonic thickness gauge
The certificate of LS212 ultrasonic thickness gauge

Software Download

The LS212 Ultrasonic Thickness Gauge is equipped with an APP that supports Android OS version 7.0 and higher. It can be installed through the following ways:

1) Scan the QR code on the instrument with your mobile browser, follow the instructions to download and install.

2) Click the link to install the APP.

3) Search for "UT and HL" (not case sensitive) in the APP Store/Google Play to install the application.


App operation video

Ultrasonic thickness gauge measured the thickness of this stainless steel pipe

LS212 ultrasonic thickness gauge actually measures the thickness of mold steel

Ultrasonic thickness gauge measures glass bottle bottom thickness

Ultrasonic thickness gauge with coarse crystal probe measures cast iron rods



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