Calibration

Caltech Engineering Services, Mumbai India is a ISO 9001 Certified firm. We provide calibration services required for various types of instruments typically manufactured and supplied by us.

Majority of instruments calibrated and repaired by us used to determine measurements to be made and accuracy required. We Select an appropriate measurement instrument capable of measurement accuracy and precision. Identify and define measurement instrument for calibration.

Do you need calibration?

Following are commonly known reasons of calibration.

  1. Restoring the accuracy of the instrument
  2. Adjusting or repairing an instrument which is out of calibration
  3. Minimizing uncertainty or error
  4. Ensuring the reliability and consistency of the instrument
  5. Keeping measurements within specification limits
  6. Building trust, confidence and reliability in measurements

Establishing traceability of the measurement to a National / International Standard, which is a mandatory requirement for most standards.

Remember that don’t get confuse between qualitative gauges and measuring instruments.

There are many gauges manufacturer, who manufactures gauges to check qualitative testing which do not requires high quality, but certified by manufacturer. These gauges can be used without any calibration as long as they are not damaged, quality is intact. In case of doubt, it is better to replace these gauges.

What is calibration?

Basically, calibration is a comparison between a known measurement (the standard) and the measurement using your instrument. Typically, the accuracy of the standard should be five to ten times the accuracy of the measuring device being tested. However, an accuracy ratio of 3:1 is acceptable by most standards organizations.

Calibration of your measuring instruments has two objectives: it checks the accuracy of the instrument and it determines the traceability of the measurement. In practice, calibration also includes repair of the device if it is out of calibration. A report is provided by the calibration expert, which shows the error in measurements with the measuring device before and after the calibration.

Why calibration is important?

The accuracy of all measuring devices degrades over time. This is typically caused by normal wear and tear. However, changes in accuracy can also be caused by many reasons like high temperature, abrasion, wear, electric or mechanical shock or a hazardous manufacturing environment. Depending on the type of instrument and the environment in which it is being used, it may degrade very quickly or over a long period of time. The bottom line is that calibration improves the accuracy of the measuring device. Accurate measuring devices improve product quality.

When should you calibrate your measuring device?

A measuring device should be calibrated in according to the recommendation of the manufacturer or any doubt, errors observed in measurements.

Frequency of calibration:

  1. In-house or external calibration program
  2. Usage of the instrument
  3. Behavior of the instrument – frequent out-of-tolerance results
  4. Accuracy and precision requirements
  5. Environmental conditions
  6. Calibration program and policy
  7. Instrument manufacturer recommended calibration interval
  8. Unscheduled calibration due to accidental dropping, or mishandling that leads to non-conforming results

ISO 9001 is a quality standard that requires certified companies to calibrate their measurement equipment, plus document the processes and procedures involved. ISO/IEC 17025 is the quality standard that calibration laboratories use to ensure they produce valid results. ISO/IEC 17025 is the quality standard that calibration laboratories use to ensure they produce valid results

We calibrate majority of paint, coating, specialized testing instruments at our place.

For any further information, please contact us.

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