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海德汉光栅尺长度测量
密封的线性编码器可防尘，防碎屑和防溅液，是机床操作的理想选择。
暴露的线性编码器在扫描头与刻度尺或刻度带之间没有机械接触的情况下工作。这些编码器的典型应用领域包括线性??度量衡测量机，比较器和其他精密设备，以及生产和测量设备，例如半导体行业。
使用增量式直线光栅尺时，当前位置是通过从一个基准点开始并计数测量步骤，或者通过细分和计算信号周期来确定的。海德汉公司的增量式编码器特征参考标记，必须在接通后扫描以重新建立原点。使用距离编码的参考标记，此过程特别简单快捷。
式直线光栅尺不需要先前的移动来提供当前的位置值。编码器通过贰苍顿补迟接口或其他串行接口传输值。
贬贰滨顿贰狈贬础滨狈式直线光栅尺用于长度测量 

Length Measurement

Sealed linear encoders are protected from dust, chips and splash fluids and are ideal for operation on machine tools. 

Exposed linear encoders operate with no mechanical contact between the scanning head and the scale or scale tape. Typical areas of application for these encoders include measuring machines, comparators and other precision devices in linear metrology, as well as production and measuring equipment, for example in the semiconductor industry. 

With incremental linear encoders,the current position is determined by starting at a datum and counting measuring steps, or by subdividing and counting signal periods. Incremental encoders from HEIDENHAIN feature reference marks, which must be scanned after switch-on to reestablish the datum. This process is especially simple and fast with distance-coded reference marks. 

Absolute linear encoders require no previous traverse to provide the current position value. The encoder transmits the absolute value through the EnDat interface or another serial interface. 

贬贰滨顿贰狈贬础滨狈式直线光栅尺用于长度测量