品名:模块是否加工定制:否原产地:美国用途:工业自动化、农业现代化、 工程、**技术、机器人技术、资源探测、海洋开发、环境监测、用于:安全保卫、诊断、家用电器
Bentley Bently's focus on inspection and control technology covers a wide range of industries and applications, including nondestructive testing (NDT), sensing, asset condition monitoring, control and instrumentation and radiation measurement. We are constantly establishing best practices and exploring future solutions, all in an effort to ensure our customers enjoy first-class quality, safety, service and productivity.
BENTLY Bentley sensors are installed inside or on the surface of the machine to measure vibration, displacement, speed, pressure, torque, and energy. Bentley Nevada offers a wide range of sensors to meet the requirements of industrial environments, some of which can be installed in hazardous areas with intrinsic safety barriers, electromagnetic insulation and other methods. If your needs are not in our standard product range, we can also modify existing products, or develop new products to meet your needs.
本特利传感器在应用中,其分辨率代表它能探测到的输入量变化的Z小值。比如一把直尺,它的Z小刻度为1mn,那么它是无法分辨出两个长度相差小于1m的物体的区别的。有些采用离散计数方式工作的传感器,例如光栅尺、旋转编码器等,它们的工作原理就决定了其分辨率的大小。有些采用模拟量变化原理工作的传感器,例如热电偶、倾角传感器等,它们内部集成了A/D功能,可以直接输出数字信号,因此其A/D的分辨率也就限制了传感器的分辨率。
本特利传感器有些采用模拟量变化的工作原理,例如电流传感器、电涡流位移传感器等,其输出为模拟信号,从理论上来讲它们的分辨率为无限小。但实际上,当被测量的变化值小到一定程度时,其输出量的变化值和噪声是处于同一水平的。在传感器的输入量恒为零的情况下,传感器的输出值仍然会有一定程度的小幅变化, 这就是零点漂移。引起零点漂移的原因有较多,比如传感器内敏感元件的特性随时间而变化、应力释放、元件老化、电荷泄露、环境温度变化等。其中 ,环境温度变化引起的零点漂移较多。
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