NI PXIe-1065 PXI 机箱

　　感应线圈中的交流电会产生变化的磁场。该场在目标中感应出电流——涡流。交变涡流产生自己的磁场，与感应线圈的磁场相反，从而改变感应线圈的阻抗。阻抗变化量取决于目标与探头中的感应线圈之间的距离。感应线圈中的电流与阻抗相关，经过处理以产生输出电压，该电压指示目标相对于探头的位置。

　　温度补偿

　　由于 Micro-Epsilon 提供多种不同的涡流传感器设计，工程师可以为其特定应用选择传感器。例如，如果需要高精度测量，则需要主动温度补偿。随着温度的变化，有两个因素会影响测量信号：机械变化，其中传感器和目标的几何尺寸以传感器和目标的伸展或收缩的形式发生变化。由于电磁特性的变化，电气效应比机械效应具有更大的影响。

　　例如，eddyNCDT 3001 系列专为传统电感式位移传感器经常达到其性能极限的应用而设计。它们尺寸紧凑，提供 M12 和 M18 外壳，测量范围从 2mm 到 8mm。它们的防护等级达到 IP67，因此适用于自动化、机器制造和设计。此外，它们的温度补偿可达 70 °C。它们具有高测量精度和线性度以及 5 kHz 的频率响应率，并且针对铁磁和非铁磁物体（例如铝和钢）进行了工厂校准。

　　静压轴承

　　涡流位移传感器的一种应用是大型机械，例如石磨或伸缩装置，这些机械通常与静压轴承配合使用。这些轴承系统通过外部压力源连续供应液体润滑剂。润滑剂被压在轴承表面之间，因此它们通过一层薄的润滑剂膜连续地彼此隔开。轴承表面不会受到摩擦，因此无磨损运行。这实现了亚微米位置控制。然而，液压系统中的任何干扰或压力下降都可能产生灾难性的后果。这可能导致轴承损坏并最终导致系统故障，从而导致高昂的维护和维修成本。因此，静压轴承中的油隙需要持续可靠的检查。对于这种应用，传感器水平安装在轴承座上，因此不会直接暴露在油压下。它通过油膜测量到相对的轴承表面上。

　　凭借过硬的技术实力和稳定的产品质量，ABB钢铁及有色金属部携旗下型的完整电气自动化系统解决方案参与到北方铜业股份有限公司（以下简称北方铜业）的森德威四立柱式高性能压延铜带箔二十辊可逆铜箔轧机项目中。该项目作为北方铜业母公司山西省属中条山集团“十三五”发展规划重点项目、山西省运城市2020年“1311”重点建设工程，建成后将成为年产5万吨高性能压延铜带箔的一流现代化铜带箔生产线，其主导产品铜带、铜箔定位于国家重点发展的铜基新材料，将广泛应用于航空航天、5G通讯产业、新能源、智能制造等领域，拥有广阔的市场前景。

　　以下是我司【主营产品】，有需要可以发来帮您对比下价格哦!

　　主营：世界品牌的PLC 、DCS 系统备件 模块

　　①Allen-Bradley(美国AB)系列产品》

　　②Schneider(施耐德电气)系列产品》

　　③General electric(通用电气)系列产品》

　　④Westinghouse(美国西屋)系列产品》

　　⑤SIEMENS(西门子系列产品)》

　　⑥销售ABB Robots. FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、Panasonic Robots、MOTOMAN Robots。

　　⑦estinghouse(西屋)： OVATION系统、WDPF系统、MAX1000系统备件。

　　⑧Invensys Foxboro(福克斯波罗)：I/A Series系统，FBM(现场输入/输出模块)顺序控制、梯形逻辑控制、事故追忆处理、数模转换、输入/输出信号处理、数据通信及处理等。Invensys Triconex: 冗余容错控制系统、基于三重模件冗余(TMR)结构的现代化的容错控制器。

　　⑨Siemens(西门子)：Siemens MOORE， Siemens Simatic C1，Siemens数控系统等。

　　⑩Bosch Rexroth(博世力士乐)：Indramat，I/O模块,PLC控制器,驱动模块等。

　　◆Motorola(摩托)：MVME 162、MVME 167、MVME1772、MVME177等系列。

　　PLC模块，可编程控制器，CPU模块，IO模块，DO模块，AI模块，DI模块，网通信模块，

　　以太网模块，运动控制模块，模拟量输入模块，模拟量输出模块，数字输入模块，数字输出

　　模块，冗余模块，电源模块，继电器输出模块，继电器输入模块，处理器模块。

　　我们的优势是：全新原装，，供给一年质保!本公司所有产品都经过严格检测，欢迎询价，收购。只需您有诚心，本公司将会给你供给一个比同行优势的价格，共同拿下单子。

　　An alternating current in the sensing coil produces a changing magnetic field. This field induces a current in the target — the eddy current. The alternating eddy current produces its own magnetic field, which opposes the sensing coil’s field, thus changing the impedance of the sensing coil. The amount of impedance change is dependent on the distance between the target and the sensing coil in the probe. Current flow in the sensing coil, which is impedance dependent, is processed to produce the output voltage, which is an indication of the position of the target relative to the probe.

　　TEMPERATURE COMPENSATION

　　Since several different eddy current sensor designs are available from Micro-Epsilon, engineers can select the optimal sensor for their particular application. For example, active temperature compensation is necessary if highly precise measurements are required. With varying temperatures there are two factors that can influence the measurement signal: mechanical changes, where the geometric dimensions of the sensor and the target change in the form of extension or contraction of the sensor and the target. And electrical effects have an even greater impact than mechanical because of changing electromagnetic characteristics.

　　For example, the eddyNCDT 3001 series is specially designed for applications where conventional inductive displacement sensors have often reached their performance limits. They have compact dimensions and are available in M12 and M18 housings, covering measuring ranges from to 2mm to 8mm. They are protected to IP67, and so are applicable in automation, machine building, and design. Furthermore, they are temperature-compensated up to 70 °C. They have high measurement accuracy and linearity as well as a 5-kHz frequency response rate and are factory-calibrated for ferromagnetic and non-ferromagnetic objects such as aluminum and steel.

　　HYDROSTATIC BEARINGS

　　One application for eddy current displacement sensors is in large machinery such as stone mills or telescopic installations, which often work with hydrostatic bearings. These bearing systems are continuously supplied with liquid lubricant via an external pressure supply. The lubricant is pressed between the bearing surfaces, which are therefore continuously separated from one another by a thin lubricant film. The bearing surfaces are not exposed to friction and hence operate wear-free. This enables sub-micrometer position control. Any disturbances in the hydraulics, or drops in pressure, however, can have disastrous consequences. This could result in damage to the bearings and ultimately system failure, causing high maintenance and repair costs. The oil gap in hydrostatic bearings, therefore, requires continuous reliable inspection. For this application, the sensor is mounted horizontally to the bearing shoe, so it is not directly exposed to the oil pressure. It measures through the oil film onto the opposing bearing surface.