product description:
The 41M / VB-Z9800 series eddy current displacement sensor can measure the relative position of the measured object (metal conductor) and the end face of the probe. Because of its long-term work reliability, high temperature resistance, high sensitivity, and strong anti-interference ability, non-contact measurement is used, the response speed is fast, and the detection is not affected by oil, steam, and other media, so it is often used to face large rotating machinery. Long-term real-time monitoring of displacement, expansion difference, shaft vibration, shaft speed and other parameters can analyze the working conditions of equipment and early prediction of failures, effectively protect equipment and perform predictive maintenance.
Working principle The eddy current displacement sensor is a non-contact displacement sensor based on the principle of high frequency eddy current effect. The high-frequency oscillating current generated in the preambler flows into the probe coil through the coaxial cable, and the coil will generate a high-frequency electromagnetic field. When the measured metal body is close to the coil, due to the effect of the high-frequency electromagnetic field, an induced current, ie eddy current, is generated on the metal surface. The current generates an alternating magnetic field, the direction of which is opposite to the direction of the magnetic field of the coil. The superposition of these two magnetic fields changes the impedance of the original coil. Therefore, the change of the distance between the probe and the surface of the measured metal body can be measured by the change of the probe coil impedance. The preamplifier outputs a DC voltage proportional to the distance according to the change of the probe coil impedance.
Remarks:
1. Probe diameter 8mm, measuring range 2mm, frequency response: 0-5KHZ
2. Including probe, pre-probe, extension cable
Mobile Flipchart Round Base,Magnetic Dry Erase Surface,Flip Chart Round Base,Dry Erase Surface Flipchart
Dongguan Aoxing Audio Visual Equipment CO.,Ltd , https://www.aoxing.net