Working Principle: It utilizes an optical sensor to read the encoding information on the scale. Gratings or optical marks on the scale are detected by the sensor, and position is measured based on changes in these optical patterns.
Advantages: Provides high resolution and accuracy. Due to the absence of a closed housing, it is often easier to integrate into various systems.
Disadvantages: Sensitive to environmental contamination and vibrations, as its operation relies on the precise reading of the optical scale by the optical sensor.
Working Principle: In a closed system, there is typically a protective housing to shield the scale from environmental factors like dust, moisture, and other contaminants. Internal sensors read the encoding information through a window in the closed housing.
Advantages: Compared to open optical encoders, closed linear scales are more resistant to environmental interference and less sensitive to contamination and vibrations.
Disadvantages: Generally, closed linear scales may have lower resolution compared to open optical encoders because the closed structure can limit the sensor’s ability to read fine details on the scale.
The choice between these types of measurement devices often depends on specific application requirements. If the environment is clean and high precision is needed, an open optical encoder might be chosen. In harsher environments where robustness to interference is crucial, a closed linear scale could be a better option.
Post time: Nov-10-2023
