What is an optical comparator used for?

Optical comparators are used to check for both dimensional accuracy and surface defects, such as scratches and indentations. In short, they allow for non-contact measurement and observation, minimizing handling while still allowing for close inspection.

What is a digital optical comparator?

An optical based inspection system that is capable of measuring hundreds of critical dimensions in seconds. The unit houses built in automated reporting providing operators real-time information in regards to their QA processes.

What is difference between mechanical and optical comparators?

Mechanical-Optical Comparators are same as the Optical comparators but the Plunger in mechanical-Optical comparator will be replaced with the Pivoted levers. The Plunger is replaced with the lever mechanism.

What are the limitations of comparators?

The amplitude of the input signal is usually much larger than the linear range of the input amplifier stages. In this way a limitation of signals for the individual amplifier stages occurs. This amplitude limitation results in variations of the delay times of the zero crossings of the differential stages.

What is the accuracy of an optical comparator?

As stated before, the accuracy of an optical comparator is approximately 0.0005” while a vision systems capabilities are double that at approximately 0.0002”.

What can be measured with an optical comparator?

An optical comparator with a computerized calculation function, you can obtain various measurement results such as width, diameter, and angle by taking measurement points while moving the stage.

What are the two types of comparator?

Types of Comparators

  • Mechanical Comparator.
  • Mechanical-Optical Comparator.
  • Reed Type Comparator.
  • Electrical-Electronic Comparator.
  • Pneumatic Comparator.

What are the advantages of comparator?

Advantages of Electrical Comparator:

  • Vibrations are reduced due to least weight of mechanical.
  • It consists of less moving parts.
  • By AC supply the friction errors are reduced.
  • For measuring units the indicating instrument can be held at remote locations.