Digital Ultrasonic Thickness Gauge for Industrial Pipe & Vessel Monitoring, 0.65-508mm Range
Designed for manufacturing, metal processing, chemical, and commodity inspection sectors, the ultrasonic thickness gauge accurately measures diverse materials—from metal and high-temperature pipelines to plastics, glass, and pipes—while monitoring corrosion-induced thinning of industrial pipes and pressure vessels.
- modelLM-4/LM-4D/LM-4DL
- brandLABEKS
- min. order1 pcs
- packageplywood case package
description
The LM-4 series represents a new generation of ultrasonic thickness gauges, delivering enhanced performance at a cost-competitive price point compared to prior models. Boasting superior measurement stability and repeatability, these gauges are widely utilized for wall thickness testing of pipelines, pressure vessels, and storage tanks across petrochemical, power generation, maritime, and manufacturing industries.
features
3. Breakthrough Zero-Crossing Measurement Technology
Powered by all-digital architecture and zero-crossing measurement technology, thickness readings remain unaffected by echo intensity, material attenuation coefficients, gain levels, or gate height, ensuring exceptional measurement stability and reliability.
2. Innovative A-Scan Snapshot Function
As a leading offering in its price class, the LM-4 series introduces visual A-scan waveform display. This eliminates the abstract nature of ultrasonic signals, allowing users to directly verify thickness readings on-screen, analyze anomalies, and troubleshoot measurement issues effectively.
4. Coating Penetration Function
(1) No-zero calibration required;
(2) High stability with readings immune to probe pressure, coupling layer thickness, and surface dust or contaminants;
(3) Zero-drift resistant design.
5. Versatile Practical Functions
(1) Gain adjustment: Selectable high, medium, and low settings;
(2) Alarm mode: Dynamic color change of thickness readings during alarm activation;
(3) Difference/Reduction Rate: Displays the variance between measured and preset thickness values, or calculates the percentage of thickness reduction—ideal for assessing metal thinning from bending or corrosion;
(4) Maximum/Minimum Capture: Simultaneously shows current, minimum, and maximum thickness values on the display.
1. Cost-Effective Fully Digital Thickness Gauge
Leveraging all-digital technology, this gauge converts analog ultrasonic signals into digital data to enable high-performance thickness measurement. Key capabilities including A-scan snapshot functionality, zero-crossing measurement technology, and high resolution are all built on this digital foundation.
specifications
Model | LM-4 | LM-4D | LM-4DL | |
|---|---|---|---|---|
Measuring range | 0.65-508 mm (0.025 – 20.00inches) depends on the probe used, the material to be tested, and the surfacecondition. | |||
Penetration coating function | NO | YES | ||
Working principle | Ultrasonic Pulse Echo Method Using Double Crystal Probe | |||
Lower limit of pipe measurement(steel) | φ 20 mm * 3.0 mm (PT08 probe); φ15 mm * 2.0 mm (small diameter tube probe) | |||
Measurement resolution | 0.01 or 0.1mm (0.001 or 0.01in) | |||
Unit | Millimeters or inches | |||
Display | 2.4QVGA (320×240) color OLEDscreen with contrast ratio of 10000:1 | |||
Repeatability | ±0.05mm | |||
Probe calibration | One-point calibration, two-pointcalibration | |||
Measurement error | 0.05 mm (less than 10 mm) (0.5%h+0.01) (more than 10 mm) Note: h is the thickness of the measured object | |||
The measurement update rate | 4HZ, 8HZ and 16HZ per second areoptional. | |||
The sound speed range of the material | 500-9999m/s，0.0179-0.3937in/us | |||
Storage function | / | Store100,000 thickness values | ||
Alarm function | The maximum/minimum alarm, alarmdynamically change the thickness reading color | |||
Gain | High, Medium and Low GearAdjustable | |||
Display mode | Thickness value mode,minimum/maximum capture mode, difference/reduction rate mode | |||
V path correction | Automatic A-range correction tocompensate nonlinearity of bimorph probe | |||
Language | Chinese, English, Japanese,German and French are available | |||
Power supply | two AA batteries | |||
Operating time | Two AA batteries for more than35 hours | |||
Automatically shut down | Optional 5, 10, 20 minutes afterno operation automatically shut down, or only manually shut down | |||
Working temperature | -10℃~+50℃, with special requirementsup to -20℃ | |||
Size | 153*76*37mm | |||
Weight | 280g (including battery) | |||
Standard configuration | Thickness gauge host, standardprobe, instrument box, two alkaline batteries, coupling agent, operationmanual, certificate of approval and packing list | |||
Optional accessories | Rubber jacket; A variety ofselectable probes; Step test block for calibration; Coupling agent and hightemperature coupling agent | |||
Configuration list | |
|---|---|
Mainframe | 1 |
Coupling agent | 1 |
Probe | 1 |
Battery | 2 |
Packing document | 1 |
Instrument seal box | 1 |
Data line | 1(only LM-4DL) |
Communication software | 1(only LM-4DL) |
Note: If send it by air, notincluding batteries, it’s an empty bottle for Coupling agent. | |
why choose us
Premium Quality with CE & ISO
We conduct 100% performance testing on every unit, ensuring its stable operation and superior performance in your application.
24/7 Expert Technical Support
Our senior engineers are on standby 24/7, ready to provide expert solutions at any time to minimize your operational downtime.
20+ Years R&D & Production
Our deep technical expertise is your solid guarantee for professional and reliable OEM/ODM services.
Trusted in 80+ Countries
Industry leaders and research institutions in over 80 countries and regions rely on our equipment for stable operation.
True Manufacturer, Factory-Direct Price
Bypass the middlemen to get our factory pricing and speak directly with our core engineers.
Rapid & Reliable Delivery
Our extensive in-stock inventory provides a solid guarantee for rapid and reliable global delivery.
Our Factory
20 Years
58 Experts
20000 m²
7X24 Hours
