This device adopts ultrasonic measurement principles and is suitable for measuring the thickness of various materials that allow ultrasonic waves to propagate at a constant speed and reflect from the back surface.
It can be used to measure various plates and processed parts. Another important application is monitoring the thinning of pipelines and pressure vessels in production equipment due to corrosion over time. It is widely used in industries such as petroleum, chemical, metallurgy, shipbuilding, aviation, and aerospace.
Basic Principle:
The principle of ultrasonic thickness measurement is similar to that of optical wave measurement. The probe emits ultrasonic pulses that travel through the measured object. When the waves reach the material’s boundary surface, they are reflected back to the probe. By measuring the time taken for ultrasonic waves to propagate through the material, the thickness of the material can be determined.
Features:
- Can measure the sound velocity of unknown materials if thickness is known.
- Upper and lower tolerance limits can be set, with an automatic alarm if exceeded.
- Bilingual (Chinese and English) operation menu with status prompt function.
- Suitable for measuring the thickness of metals (such as steel, cast iron, aluminum, copper, etc.), plastics, ceramics, glass, fiberglass, and other good ultrasonic conductors.
- Features probe zero calibration and automatic system error correction.
- Coupling status indication function.
- High-brightness LED backlight display for use in dim lighting conditions.
- Battery level indicator to show remaining battery power.
- Power-saving functions, including automatic sleep and auto power-off.
- Compact, portable, highly reliable, and resistant to vibration, impact, and electromagnetic interference. Supports both metric and imperial units.
Technical Specifications:
Model: Dor Yang 321
- Measurement Range:
0.75~350mm (steel, depending on the probe). Standard probe measurement range: 1-250mm. - Display Resolution: 0.1mm
- Sound Velocity Range: 1000~9999m/s
- Surface Temperature: -10~60℃
- Measurement Error: ±(1%H+0.1)mm (H = actual thickness of the measured object)
- Power Supply: 2 × AAA alkaline batteries
- Operating Time: Approximately 200 hours
- Dimensions: 130×70×25mm
- Weight: Approx. 0.2kg (main unit)
Standard Accessories:
- Main unit
- L51 probe
- AAA alkaline batteries
- Coupling agent
Optional Accessories:
- Additional probes
- Coupling agents
Available Probes:
| Name | Model | Frequency (MHz) | Probe Diameter | Measurement Range (Steel) | Min. Pipe Diameter | Features |
|---|---|---|---|---|---|---|
| Standard Probe | L51 | 5 | 10mm | 1.0mm – 250.0mm | Φ20mm×3.0mm | For general use at normal temperatures (<60℃) |
| Small Diameter Probe | L77 | 7 | 6mm | 0.75mm – 50.0mm | Φ15mm×2.0mm | Suitable for thin walls and small curved surfaces, normal temperature (<60℃) |
| Coarse Grain Probe | LZ2 | 2 | 22mm | 2.5mm – 350mm | 20 | For coarse-grained materials like cast iron, normal temperature (<60℃) |
| High-Temperature Probe | LG5 | 5 | 14mm | 2.0 – 100mm | 30 | For measuring materials with temperatures below 300℃ |
Reviews
There are no reviews yet.