An ultrasonic thickness gauge is a device used to measure the thickness of materials using ultrasonic waves. It is a non-destructive testing (NDT) tool that provides fast and accurate thickness measurements without the need for direct contact with the material being measured.
Here’s an overview of a typical ultrasonic thickness gauge:
- Measurement Principle: Ultrasonic thickness gauges use the principle of ultrasonic sound waves. The gauge emits high-frequency sound waves (typically in the range of 1 ke 20 MHz) into the material being measured. These sound waves travel through the material and reflect back from the opposite side or from a back wall. The gauge measures the time taken for the sound waves to travel and calculates the thickness based on the known velocity of sound in the material.
- Transducer: The ultrasonic thickness gauge consists of a handheld unit with a transducer or probe. The transducer generates the ultrasonic sound waves and also acts as a receiver to detect the reflected waves. The transducer is placed on the surface of the material being measured, and the gauge displays the thickness measurement on its screen.
- Display and Readout: The gauge has a digital display screen that shows the measured thickness in real-time. The display may provide additional information such as statistical data, measurement units (e.g., millimeters or inches), and calibration status. Some gauges also offer graphical displays for visualizing the thickness measurements.
- Measurement Range and Resolution: Ultrasonic thickness gauges come in various models with different measurement ranges and resolutions. The measurement range determines the maximum and minimum thickness values that the gauge can accurately measure, while the resolution determines the smallest incremental change in thickness that the gauge can detect.
- Calibration: To ensure accurate measurements, ultrasonic thickness gauges require calibration. Calibration involves setting the gauge to a known reference standard or a material with a known thickness and adjusting the gauge accordingly. Some gauges have built-in calibration functions, while others require periodic calibration by a certified calibration laboratory.
- Applications: Ultrasonic thickness gauges are widely used in industries such as manufacturing, metal fabrication, minyak dan gas, petrokimia, pembangkit listrik, and maritime. They are used to measure the thickness of pipes, tank, vessels, piring, and other structures made of various materials, termasuk logam, plastik, komposit, and glass. The gauge helps assess the structural integrity, monitor corrosion, detect thinning of materials, and ensure compliance with safety and quality standards.
Additional features found in some ultrasonic thickness gauges include data logging, data transfer capabilities, multiple measurement modes, adjustable sound velocity settings for different materials, and compatibility with computer software for further analysis and reporting.
Saat memilih pengukur ketebalan ultrasonik, it’s important to consider factors such as the material being measured, required measurement accuracy, jarak pengukuran, resolusi, and any specific industry standards or regulations that need to be met.
