Description
The eddy-current axis displacement sensor provides a simple and low-cost way to monitor the axis displacement of rotating machinery rotors directly with DCS and PLC interface. Real-time monitoring of shaft displacement of main engine and auxiliary equipment, such as steam turbine, compressor, fan, pump, motor, etc., can really protect such equipment. It is accurate in measurement, stable and reliable, and has strong anti-interference performance. ◆ Power supply: +24Vdc, maximum working current is less than 20mA. ◆ Input: HZ-891 series eddy current sensor probe. ◆ Spirit sensitivity: 8mA/mm. ◆ Accuracy: ≤1%. ◆ Transmission output: 4 ~ 20mA, maximum load resistance 500Ω. ◆ Output ripple: ≤20mV. ◆ Frequency response: 0 ~ 10KHz. ◆ Temperature bleaching: ≤0.1%℃. ◆ Overall size: 90mm(W)×35mm(L)×70mm(H). ◆ Installation size: base plate installation, 51mm×51mm, using four M4× 12GB29-76 bolts installation; Rail mounting, can be easily installed on the standard 35mm rail. ◆ Wiring mode: SpringLoc terminal is used, with automatic fastening function, and can be connected without installation tools, because it does not need bolts to be fixed, it will not loose. ◆ Operating temperature: -30℃ ~ 80℃.
Advantages of eddy current sensors 1, eddy current sensor is a non-contact linearization measurement tool, can be static and dynamic non-contact, high linearity, high resolution measurement of the measured metal conductor distance from the probe surface. The measurement accuracy of eddy current sensor will be affected in the process of measurement. 2, when the sensor characteristics and the conductivity of the measured body, due to the coexistence of eddy current effect and magnetic effect, the magnetic effect reacts on the eddy current effect, making the eddy current effect weakened, that is, the sensitivity of the sensor is reduced. When the measured body is a weak magnetic permeability material (such as copper, aluminum, alloy steel, etc.), due to the weak magnetic effect, the eddy current effect is relatively strong, so the sensor sensitivity is high.
3. The irregular surface of the measured body will bring additional errors to the actual measurement, so the surface of the measured body should be smooth and smooth, and there should be no defects such as bumps, holes, nicks, grooves and so on. In general, the measured surface roughness of vibration measurement is required to be between 0.4um and 0.8um; For displacement measurement, the measured surface roughness is required to be between 0.4um and 1.6um.
4, the eddy current effect is mainly concentrated on the surface of the tested body, if the residual magnetic effect is formed during the processing, and the uneven quenching, uneven hardness, uneven metallographic organization, and uneven crystalline structure will affect the characteristics of the sensor. During vibration measurement, if the residual magnetic effect on the surface of the measured body is too large, the measurement waveform will be distorted.
Main brands include: ABB, Bailey, GE, FOXBORO, Invensys TRICONEX, Bentley BENTLY, A-B Rockwell, EMERSON EMERSON, B&R, MOTOROLA, FUANC, REXROTH, KUKA, HONEYWELL, NI, DEIF, Yokogawa, WOODWARD WOODWARD, Ryan, SCHNEIDER SCHNEIDER, Yaskawa, MOOG, EPRO, PROSOFT and other major brands
The company focuses on DCS, PLC, robot, large servo four systems
The main products are various modules/cards, controllers, touch screens, servo drivers
Company advantage: Supply imported original products, professional production of spare parts
One year warranty, fast delivery time, complete supply !！！
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