Q1: What is an ultrasonic thickness gauge?
The ultrasonic thickness gauge is improved based on the principle of ultrasonic measurement. It can measure the thickness of metals and other materials and can measure the sound speed of the material. The sisco ultrasonic thickness gauge is a portable thickness meter that can measure the thickness of various pipes and pressure vessels in production equipment, as well as accurately measure various sheets and machined parts.
Q2: How does an ultrasonic thickness gauge work?
sisco ultrasonic thickness gauge offers through-coating thickness measuring capability. It measures the thickness of an object by precisely calculating the times the probe sends an ultrasonic pulse to the object and passes through the object until the probe receives the reflection from the boundary. The ultrasonic pipe thickness gauge adopts the most advanced microprocessor and ultrasonic technology and has the characteristics of zero drift, reliable and stable reading, and no need for zero calibration. You can now test painted objects without removing paint or correcting paint thickness.
Q3: 4 Measurement methods of ultrasound thickness gauge
- Single-point measurement method: It means that the ultrasound thickness gauge is used to measure any point of the measured material with a probe, and the display value is the thickness value.
- Two-point measurement method: The ultrasound thickness meter is used to make two measurements at the same point of the measured material with a probe. In the second measurement, the probe's split surface is 90 degrees, and the smaller value in the two measurements is the thickness value.
- Multi-point measurement method: When the measurement value is unstable, take a measuring point as the center and make multiple measurements in a circle with a diameter of about 30 mm. The minimum value is the thickness value.
- Continuous measurement method: It uses a single-point measurement method to measure continuously along a designated line with an interval of not less than 5 mm. The minimum value is the thickness value.
Tips: Why are calibration blocks used for ultrasonic thickness gauges?
The ultrasonic thickness gauge is used to accurately measure the thickness of different materials under different conditions. In order to meet the requirements of the maximum accuracy measurement, a set of reference test blocks or calibration block will be very important. The closer the material of the calibration block is to the material to be tested, the more accurate the measurement. The ideal reference test block is a set of test pieces of different thicknesses of the material to be tested. The calibration block can offer the UT instrument compensation correction factors.
In most cases, using one calibration block can obtain satisfactory measurement accuracy. This reference test block should have the same material and similar thickness as the tested material.
For thin materials, when its thickness is close to the lower limit of probe measurement, the calibration block can be used to determine the exact lower limit. Do not measure materials below the lower limit of thickness. If a thickness range can be estimated, the upper limit should be chosen for the thickness of the calibration block.
As for the thick material to be tested, especially for alloys with complex internal structures, the one among the reference block that is close to the tested material should be selected, so as to facilitate calibration.
