LBTJ-180 Plus Handheld High-Precision Ultrasonic Thickness Gauge
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Description
Product Introduction:
Handheld high-precision ultrasonic thickness gauge with digital display and A/B-scan functionality. It employs the pulse‑echo ultrasonic thickness‑measurement principle and is suitable for measuring the thickness of materials in which ultrasonic waves propagate at a constant speed and can be reflected from the back side. Measurement resolution reaches 0.001 mm, with a measurement range as thin as 0.11 mm (steel), and it can effectively penetrate coating interference.
This product is applicable across a wide range of industries, including petroleum, chemical processing, metallurgy, shipbuilding, aerospace, and energy. It is suitable for measuring the thickness of metals (such as steel, cast iron, aluminum, copper, etc.), plastics, ceramics, glass, fiberglass, fibers, and other materials that are excellent ultrasonic conductors.
Complies with the standard “Calibration Specification for Ultrasonic Thickness Gauges” JJF 1126-2004.
Main Features
● Wide measurement range: minimum measurable thickness 0.11 mm (steel), maximum measurable thickness 1800 mm (range depends on the probe);
● High-precision thickness measurement, with a maximum measurement resolution of 0.001 mm and a repeatability of ±0.002 mm;
● A-scan mode, B-scan mode, and numerical display mode;
● Features penetration through coatings and echo‑to‑echo measurement, enabling the measurement of materials with paint or coating layers on their surfaces;
● Depending on the material’s acoustic velocity, it can detect coatings and paint layers on certain composite materials; it can simultaneously measure the thicknesses of more than ten layers in multilayer materials, with the ability to switch between displaying the thickness values of each layer under the same echo.
● Multiple measurement modes: MB‑E, I‑E, E‑E, and ME‑E are designed for measuring standard‑thickness workpieces, while the THIN mode is intended for thin‑section measurements.
● The numerical modes include the conventional thickness value mode, the difference/reduction ratio mode, and the extremum mode;
● Gain mode: Automatic gain / Manual gain;
● Supports both manual and automatic shutdown, with an energy-saving feature;
● Supports a variety of probe types, including dual‑crystal and single‑crystal probes, with maximum compatibility for 20 MHz high‑frequency probes.
● Supports large-capacity storage, capable of simultaneously storing 100,000 thickness readings, 500 A-scan waveforms, and 500 B-scan waveforms.
● Offers multiple calibration methods, supporting single-point calibration, multi-point calibration, and manual calibration modes; it can simultaneously calibrate sound velocity and probe zero offset. It also supports V‑path calibration.
● Imperial–metric conversion: switch between millimeters and inches;
● Display in Chinese and English.
Technical Specifications:
| Project | LBTJ-180 Plus |
| Probe Type | Single crystal/double crystal |
| Measurement range (45# steel) | 0.11 mm – 1800 mm (range depends on the probe) |
| Measurement frequency | 4 Hz, 8 Hz, 16 Hz |
| Resolution | 0.1 mm, 0.01 mm, 0.001 mm (0.01 inch, 0.001 inch, 0.0001 inch) |
| Pulse generator | Negative square-wave excitation; pulse width and voltage are automatically matched to the probe. |
| Sound speed range | 400-19999m/s |
| Calibration test block | 4mm (steel) |
| Automatic shutdown | You can choose 5 minutes, 10 minutes, 20 minutes, or manual shutdown. |
| Probe calibration | One-point calibration, two-point calibration, manual calibration |
| Gain | Automatic Gain, Manual Gain |
| Gain range | 0~80dB |
| Detection method | Radio Frequency RF, Positive Half-Wave POS, Negative Half-Wave NEG, Full-Wave FULL |
| Measurement Mode | (1) MB-E: From the leading edge of the transmit pulse to the first echo; (2) I-E: From the interface wave to the first echo; (3) E-E: Through-coating measurement, with the option to select any Em–En echo; (4) ME-E: Multi-echo measurement mode; (5) THIN: Thin-wall measurement mode. |
| Numerical model | Thickness value mode, difference/reduction ratio mode, maximum/minimum value mode |
| A-scan mode | Support |
| B-scan mode | Support |
| Coupling Indicator | Support |
| Battery indicator | Support |
| Language | Chinese/English (English) |
| Unit | Millimeters/Inches (mm/inch) |
| Menu Operations | Support |
| Software Features | Dynamic gate settings, blanking settings (Blank), echo blanking settings (E-Blank), return… |
| Echo freezing, echo translation, and scaling | |
| Storage function | It also supports 100,000 thicknesses (100 groups, with 1,000 thicknesses per group), and 500 A-scan sets. |
| Waveform display and 500 sets of B-scan waveforms | |
| Host Program Upgrade | Supports host program upgrades |
| Display screen | 3.5-inch true-color display |
| Data transmission | Supports USB communication for data transfer to a computer (optional) |
| Operating temperature | -10℃ to +50℃ |
| Operating voltage | Three No. 5 lithium-ion batteries; a low-voltage indicator alerts when the battery is low. |
| External dimensions | 184 x 85 x 32 (mm) |
| Overall machine weight | 250 g (without battery) |
| Standard configuration | 1 host, 3 No. 5 batteries, 1 charger, and documentation. |
| 1 set, 1 ABS shockproof and waterproof instrument box |
Table of Maximum Permissible Indication Errors
| Resolving power | Repeatability | Maximum permissible indication error | |
| Measurement range lower limit: 10 mm | 10 mm to the upper limit of the measurement range | ||
| 0.1 | 0.1 | ±0.1 | ±(0.1+H/100) |
| 0.01 | 0.01 | ±0.05 | ±(0.01 + H/200) |
| 0.001 | 0.002 | ±0.005 | ±(0.005 + H/300) |
| Note: In the table, H represents the nominal value of the standard thickness block. | |||
Optional probe:
| Probe model | Type | Probe frequency (MHz) | Probe diameter (mm) | Measurement range (mm) |
| TS400 | Twin crystal | 10 | 5 | 0.5-50 |
| TS500 | 5 | 5 | 1.0-65 | |
| TS510 | 5 | 10 | 1.0-500 | |
GS510 (High-temperature probe) |
5 | 10 | 1-500 (Temperature range: -20 to 500°C) |
|
| DTM15 | Single crystal | 15 | 6 | 0.11-22.5 |
| DTM7.5 | 7.5 | 6 | 0.5-22.5 | |
| DTM10 | 10 | 6 | 0.3-22.5 | |
| DTM5 | 5 | 6 | 1.0-22.5 | |
| BD1010 | 10 | 10 | 0.5-1000 | |
| BD510 | 5 | 10 | 1-1000 | |
| BD212 | 2 | 12 | 4-1800 | |
| Pen-type probe | 15 | 2 | 0.3-12 |
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