Ultrasonic Thickness Gauge
Your Professional Ultrasonic Thickness Gauge Supplier
Chongqing Leeb lnstrument Co.Ltd, located at High-tech industrial Development Zone of Chongqing, China. We specialize in manufacturing, researching and sale of NDT and Precision Testing Instruments over twenty years, including various kinds of Hardness Tester, Microscope, Surface testing device, Ultrasonic equipment and online Automatic testing systems.
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Portable Ultrasonic Thickness Measurement GaugeIntegrated with a 4mm calibration block.read more
Two display units: mm and inch.
With coupling state indication.
Measuring sound velocity: according to the known thickness of... -
Ultrasonic Wall Thickness Measurement MachineHigh quality metal sheel.read more
Two display units: mm and inch.
With coupling state indication.
Measuring sound velocity: according to the known thickness of the object, sound... -
Metal Case UT Wall Thickness Inspection TesterIntegrated with a 4mm calibration block.read more
Super high resolution: 0.001mm.
Two display units: mm and inch.
With coupling state indication. -
Digital Ultrasonic Pipe Wall Thickness Tester with PrinterHigh stability and precision.read more
Available software for PC connection, data transmission & analysis, and printing measurement reports.
With built-in thermal printer. ... -
High-precision with PC Software Ultrasonic Thickness TeserHigh stability and precision.read more
With 2 probes (Standard probe and Angle probe)
Integrated with a 4mm calibration block.
Two display units: mm and inch.
With... -
Metal Shell Ultrasonic Thickness Teser for PipelineHigh quality metal shell.read more
Precise measuring performance.
With 2 probes (Standard probe and Angle probe).
Integrated with a 4mm calibration block.
Two display... -
Printer Ultrasonic Plate Thickness TesterHigh quality and precision.read more
Built-in thermal printer.
With 2 probes (Standard probe and Angle probe) and 4 steps calibration block.
Rechargeable Li-ion battery, available for... -
Color Screen EE A Bcan Ultrasonic Thickness GaugeHigh Precise measuring performance.read more
Two ways of measuring: PE-testing and EE-testing.
EE-test function (Echo to Echo), measuring the thickness of workpiece through the coating on... -
PE EE Ultrasonic Thickness Tester for Through CoatingPE EE Ultrasonic thickness tester for through coating.read more
High Precise measuring on Ultra-thin parts.
Two ways of measuring: IE-testing and EE-testing.
EE-test function... -
IE EE Test Ultrasonic Thickness Teser Through PaintingIE EE test Ultrasonic Thickness teser through painting.read more
Measuring range 0.15~300mm in steel.
Both single crystal and dual crystal probes are available.
Special for...
Why Choose Us
Certifications
We are a professional factory certified to ISO 9001 standards. Our products are tested using high-quality equipment and meet CE, FCC, and RoHS certification requirements.
Sales Market
In addition to meeting the needs of customers in mainland China, our products are also exported to advanced manufacturing countries such as Israel, the United States, Canada, Germany, France, Italy, Spain, and South Korea.
Our Services
We offer fast shipping with delivery in just 7 business days. All products come with a warranty of one to three years.We also provide free technical support and training.
Ultrasonic Thickness Gauge
The ultrasonic thickness gauge adopts the principle of ultrasonic measurement, and is suitable for measuring the thickness of various kinds of ultrasonic benign conductor materials. This instrument can measure the thickness of all kinds of materials and monitor the thinning degree of various pipes and pressure vessels in the production process. It can be widely used in petroleum, chemical, metallurgy, shipbuilding, aviation, aerospace and other fields.
Technical Specification
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Model |
Leeb 330 |
Leeb 331 |
Leeb 332 |
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Measuring range (mm) |
0.7~300 |
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Resolution (mm) |
0.1 |
0.01 |
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Accuracy (mm) |
±(1%H+0.1) H refers to the thickness of testing piece |
±(0.5%H+0.01) H refers to the thickness of testing piece |
|
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Velocity range (m/s) |
5920 |
1000~9999 |
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Velocity measurement |
√ |
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Storage |
N |
1000 Groups |
|
|
Shell |
Metal |
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Operating temperature |
-10°C~60°C |
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Dampness |
20%~90% |
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Dimensions |
130×70×25mm |
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Power supply |
2 AAA alkaline batteries |
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Weight |
420g |
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Standard Configuration
|
Name |
Quantity |
Name |
Quantity |
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Main unit |
1 |
Coupling agent |
1 |
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Standard probe (5P Ø10) |
1 |
AAA alkaline battery |
2 |
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Users' Manual |
1 |
Packing list |
1 |
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Qualified Certificate |
1 |
Warranty card |
1 |
Main Functions

1. Suitable for measuring the thickness of metals (such as steel, cast iron, aluminum, copper, etc.), plastics, ceramics, glass, glass fiber and any other good conductors of ultrasonic waves.
2. Can be equipped with a variety of probes with different frequencies and different chip sizes.
3. Knowing the thickness can be used to measure the sound velocity to improve the measurement accuracy.
4. It has the function of prompting the coupling status.
5. It has an EL backlight display, which is convenient for use in dimly lit environments.
6. It has a remaining power indicator function, which can display the remaining battery power in real time.
7. It has energy-saving functions such as automatic sleep and automatic shutdown.
8. The sealed all-aluminum alloy metal housing is suitable for harsh operating environments and is resistant to vibration, shock and electromagnetic interference.
9. There are two shutdown modes: manual shutdown and automatic shutdown.
10. Powered by a lithium battery, it has a battery life of up to 200 hours (without backlight).
Select the sound velocity setting
Set by material
Select the sound velocity corresponding to the same material as the metal material to be tested for measurement. This method is suitable for statistics of the sound velocity of the known metal or metal material in the instrument.
Set by thickness
Select a sample of the same material as the metal to be tested with a known thickness, apply coupling agent on the surface of the sample, press the probe tightly on the surface of the sample, and then adjust the actual thickness of the sample by pressing the up and down keys. After saving the sound velocity, press the probe tightly on the surface of the sample. The thickness of the metal surface to be tested can be measured. This method is suitable for measuring the sound velocity of unknown materials.
Manual imput
For the sound velocity of known materials, you can directly input the sound velocity and save it, then directly measure the metal material to be tested to get an accurate value. This method is suitable for the sound velocity of the metal material to be tested is known or the sound velocity of the metal to be tested has been calculated in the way of setting the sound velocity with a known thickness.
How Does an Ultrasonic Thickness Gauge Work?
The principle behind ultrasonic thickness gauges is sound wave reflection. Here’s a simplified explanation:

Transducer
The gauge uses a transducer (probe with piezoelectric crystals) to emit ultrasonic sound waves into the material.
Sound Waves Travel
These sound waves pass through the material and reflect back when they hit the far side or an internal defect like corrosion.


Reflection
The reflected waves return to the transducer. The time it takes for the waves to return determines the thickness of the material.
Calculation
The gauge calculates the material’s thickness based on the time of flight and the velocity of sound in the material.

There are various types of ultrasonic thickness gauges mentioned below
Pulse-echo ultrasonic thickness gauges
These gauges emit ultrasonic pulses into a material and then measure the time it takes for the echoes to return. They are typically used to measure thicker materials, such as metal or plastic.
Continuous-wave ultrasonic thickness gauges
These gauges emit a steady stream of ultrasonic waves into a material and then measure the time it takes for the echoes to return. They are typically used to measure thinner materials, such as glass or plastic.
Doppler ultrasonic thickness gauges
These gauges use ultrasound to measure changes in frequency (Doppler shifts) caused by the motion of the material as it passes by the transducer. The frequency shift is proportional to the moving material’s thickness.

Commonly Tested Materials
Many Metals
1
>>
Nickel
2
>>
Aluminum
3
>>
Lead
4
>>
Many Ceramics
5
>>
Glass
6
Common Applications
Material Thickness
01
Coating Thickness
02
Lining Thickness
03
Wall Measurements
04
Corrosion Loss
05
Considerations for Correct Usage on Ultrasonic Thickness Gauge
To use the ultrasonic thickness gauge efficiently, you must satisfy certain criteria. Here are some of these criteria below.




Select the Correct Transducer: In selecting the right transducer to be deployed for testing, there are other factors still to be considered, and they include the type of material to be tested, the surrounding physical limitations in the environment, the temperature of the material, and other technical factors around the test object such as the uniformity of the surface or if there exists a bend.
Choose the right couplant: A couplant represents a fluid that guarantees that there’s no gap between the test instrument, which is the transducer, and the test material, which is the object being measured. A little quantity should be administered on the surface before you can accurately calculate. Consequently, failure to verify a sufficient seal will translate to irregular results.
Make Calibration: This is necessary when implementing piping or tubing tests, as the diameter of the pipe ascertains what kind of testing technique is to be applied. For example, the testing could require either perpendicular or parallel testing. Bigger diameters with ten centimeters and above require the measurement with the transducer perpendicular to the lengthy axis. It would be best to take a perpendicular measurement and an additional parallel one for smaller diameters. But the lower measurement is the recorded measurement.
Prepare the Surface: When the surface of the tested object is uneven or rough, the reliability of the results is shortened. Therefore, it is advisable to clear any scale, rust, or debris found on the surface of the test material either with sanders, grinders, or a wire brush.
Take care of Temperature Fluctuations: It is a fact that sound waves are slower on hot material. Therefore, it is also advisable to utilize transducers suitable for such temperatures to have an accurate result and avoid expansion on the test object’s surface. It must also be kept on the surface only for the time required to perform the test.
Certifications


FAQ
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