Special smart ultrasonic thickness gauge and portable ultrasonic thickness gauge

Special Smart Ultrasonic Thickness Gauge Portable Ultrasonic Thickness Gauge Model: JJ-160
1 Overview
JJ-160 intelligent ultrasonic thickness gauge, using the latest high-performance, low-power microprocessor technology, based on the principle of ultrasonic measurement, can measure the thickness of metal and other materials, and can measure the sound speed of the material. Various pipelines and pressure vessels in production facilities can be monitored, their degree of thinning after corrosion during use can be monitored, and various plates and various processed parts can be accurately measured. The instrument can be widely used in petroleum, chemical, metallurgy, shipbuilding, aviation, aerospace and other fields.
2 JJ-160 Intelligent Ultrasonic Thickness Gauge Technical Parameters
l Display method: high-contrast segment code LCD display, high-brightness EL backlight;
l Measurement range: 0.75 ~ 300mm (in steel), metric and imperial options;
l Sound speed range: 1000~9999 m/s:
l Resolution: 0.1/0.01mm (optional)
l Accuracy: ±(0.5%H+0.04)mm H is the actual thickness of the measured object
l Measurement period: 4 times per second for single-point measurement and 10 times per second for scan mode;
l Storage capacity: It can store 20 groups (up to 99 measurements in each group) of thickness measurement data, which can be connected with micro-printers or PCs to achieve mass storage.
l Operating voltage: 3V (2 AA alkaline batteries in series)
l Continuous working time: about 100 hours (without backlight)
l Communication interface standard: RS232, can connect with micro printer or PC
l Dimensions: 150×74×32 mm
l Total weight: 245g
3 JJ-160 Intelligent Ultrasonic Thickness Gauge Main Function
l Suitable for measuring the thickness of good conductors of metal (such as steel, cast iron, aluminum, copper, etc.), plastics, ceramics, glass, glass fiber and any other ultrasonic wave;
l can be equipped with a variety of different frequencies, different wafer size dual crystal probe use;
l Zero calibration of the probe and two-point calibration function, which can automatically correct the system error;
l The known thickness can be used to measure the speed of sound in reverse to improve the measurement accuracy;
l has a coupling state prompt function;
l EL backlight display, easy to use in dimly lit environments;
l Remaining battery indicator function, which can display the remaining battery power in real time;
l With automatic sleep, automatic shutdown and other power-saving features;
l Small, portable, high reliability, suitable for harsh operating environment, resistant to vibration, shock and electromagnetic interference;
4 JJ-160 Intelligent Ultrasonic Thickness Gauge Working Principle The thickness of the ultrasonic thickness gauge is measured by the ultrasonic pulse generated by the probe through the coupling agent to the measured body, part of the ultrasonic signal is reflected by the bottom surface of the object, and the probe is received by the tested The echoes reflected from the bottom surface of the body are used to accurately calculate the round trip time of the ultrasonic wave, and the thickness value is calculated according to the following formula, and then the calculation result is displayed.

In the formula: H-measure thickness;
V-material speed of sound;
t - the time for the ultrasonic wave to travel back and forth in the test piece.

Curved Platelike Johnson Screen is a kind of platelike Johnson screen. It is made up of several support rods and wedge shaped surface wire. The size of slot opening is controllable.