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Understanding Accuracy in DRO Systems: Not All Numbers Are Created Equal

Posted on Apr 17, 2024 By

Choosing a DRO system can be confusing, especially when it comes to accuracy. Forget vague terms like "extremely accurate." Here's what you need to know:

Accuracy vs. Resolution: Accuracy tells you how close the DRO's readings are to the actual measurement. Resolution refers to the smallest value the display can show. High resolution doesn't guarantee high accuracy!

System Accuracy: This combines both encoder accuracy (how precise the measuring component is) and DRO resolution. Modern, high-resolution DROs might be misleading if the encoder itself isn't equally accurate.

Repeatability: This describes how consistent the DRO is in giving the same reading for the same measurement. However, factors like machine condition can affect repeatability, not just the DRO itself.

Matching Accuracy to Application: Don't get hung up on the highest accuracy number. Consider the machine you're using and the level of precision actually needed. A high-accuracy DRO won't fix inherent machine tool inaccuracies.

Remember: Understanding these terms will help you choose the right DRO system and avoid being misled by flashy numbers.

We are agents for Newall Measurement Systems, if you are in the market for a new DRO reach out to us with machine details and travels required and we will quote you accordingly.