An optical measuring instrument is a precision device. Proper maintenance ensures sustained performance, higher measurement accuracy, and a longer service life. Below are recommended maintenance steps organized by routine frequency, and some key precautions to keep in mind.
Daily Maintenance
- Clean the stage glass using ethanol.
- Wipe down the non-metal parts of the instrument’s exterior with ethanol.
- Apply anti-rust oil to metal components and screws to prevent corrosion.
- Use a soft cleaning cloth to gently clean optical glass or screens; avoid using hard tools that might scratch the surface.
- Keep the working environment tidy: ensure the floor is clean and free of dust or debris that might affect the instrument’s performance.
Weekly Maintenance
- Perform routine accuracy adjustments, such as edge-finder or screen calibration.
- Wipe down all parts of the instrument’s stage/workbench.
- Clean all panels with ethanol to remove smudges or residues.
Quarterly Maintenance
- Conduct full-range precision adjustments, including edge-finder and screen calibration across the full travel.
- Level the stage glass, making sure it is perfectly horizontal.
- Clean secondary lenses (for example, 2× lenses) with ethanol.
Important Precautions
- Move the work stage smoothly; avoid jerky or uneven movement to prevent mechanical stress or damage.
- When using edge-finders, calibrate first using gauge blocks, then proceed with measurements.
- Avoid magnetic interference: keep ferrous or magnetic materials away from screens or computers which are part of the system.
- Use fine crosshairs; thick lines can affect measurement accuracy.
- Do not modify or move cable harnesses or connections yourself—incorrect handling may damage the instrument.
- Control the environment: maintain temperature around 20°C (68°F) and relative humidity around 55%. If possible, use air conditioning and dehumidifiers to stabilize conditions, protecting the electronics.