Calibrating instruments is an inevitable part of your manufacturing and production process as it guarantees accuracy and consistency in results. A regular error check of your instrument minimizes error and reduces the need for maintenance in between scheduled maintenance and calibration checks. Being the leading service provider of calibration services in Chennai, we carry out standardization of various measurement devices including gauges, indicators, analyzers, controllers, power supplies etc. In this blog, we will educate you about calibration services and how they are performed to make your devices error-free.
What is a calibration service?
Calibration service aims at detecting the uncertainty and inaccuracy in measuring instruments and equipments. The erratic device or DUT (Device under Test) is compared to a reference of known value to determine the deviation from the true value. Next, the DUT is adjusted to get accurate measurements by adjusting or trimming to get the true value. Nagman calibration services ensures standardization for consistent performance, accuracy and repeatability.
How is calibration service performed?
At Nagman Instruments, we follow the below mentioned procedure to fine tune instruments:
Using an instrument of higher accuracy
- Using the difference in measurement calculation in DUT and calibratinmg equipment
- Using the DUT and calibrating equipment to measure the samples unde3r same test condition.
- Repeating the above until the number of data points by the calibration procedure is satisfied.
- Finally the calibrated data is interpreted
Using a source or a Certified Reference Material (CRM)
- First the DUT is used to measure the output of the CRM
- The difference between measurement by DUT is calculated
- The same steps are repeated until the required number of data points are satisfied.
- Interpretation of the calibrated data
Points to remember:
- While comparison of data, if the measurement error is within acceptance range, the measuring instrument don’t need any adjustments. Or in other words DUT has passed the calibration.
- If the measurement crosses the acceptance benchmark, DUT failed the calibration and measuring instrument needs some calibration corrections and adjustment.
- Test Accuracy Ration (TAR) and Test Uncertainty Ratio (TUR) are the two common metrics while calibrating instrument. At nagman calibration, we consider a TAR or TUR of 4:1 which means the reference standard is four times more accurate than the DUT.
Known as one of the leading calibration test bench manufacturers, Nagman Instruments carry a legacy of more than five decades in calibration testing and corrective maintenance. Our NABL accreditation guarantees the technical competence of our engineers in providing accurate and reliable correction services. Reach out to us to mitigate your operational risk today.
