The calibration could be of different types, such as five-point calibration that gives great results. Besides this, one-point and three-point calibration are also popular. These are the calibration done on the device, which does not show fluctuated from their results. Any devices that have a larger error in their result are considered to give a five-point calibration. Usually, 5 point calibration gives a very accurate reading.
Apart from this, the calibration range is another important thing that must not be ignored when calibrating your device. If the range of the calibration and your device is matched, it could give optimum results to your measurement. Calibration of measuring instruments (สอบเทียบเครื่องมือวัด) is done in the field in the field, whereas some go for an in-shop calibration, also known as bench calibration. Here we are discussing some important types of calibration for a measuring device.
- Field Calibration
When a field calibration is done, the instrument is kept on its process during the calibration. In a field calibration, the device gives the live result and also changes their error live. The field devices can be disconnected through an isolating valve, which is usually in every field device. Once it is disconnected from the process, it is kept in the air before calibrating. Once it gets in touch with the atmosphere, the field calibration signals are applied.
- In Shop Calibration
In-shop calibration, usually known as bench calibration, is not done in a field area. Instead, the device is brought to a shop and then kept on a bench where it needs to be calibrated. The bench is known as a calibration bench with many instruments attached to it to make the calibration process easy and simple. Once the instrument is kept on the bench, it is detached from the process and cleaned completely. Once it is cleaned, it is kept on the calibration bench to carry out its calibration process.
- Bench Tester
For carrying out the bench calibration of a device, the bench tester is used. An instrument that is calibrated through a bench tester gives a very accurate measurement. The bench tester also contains a pressure source that helps produce a test pressure necessary for testing the instrument. You will find that most of the bench testers are fabricated, whereas some are also kept open. Most of the bench testers consist of pumps that are labeled for different kinds of uses.
- Calibration Records
Before calibrating a device, complete documentation of the device is done to prevent its historical records. All the records mentioned in the device are noted down on paper before starting the calibration process. Usually, the calibration records contain the data found in the device, the date of calibration date of final calibration, the name of the technician who carried out the calibration process, and the date of the next calibration.
These are the different types of calibration that a person could get the entire device. Remember, it is important to get a calibration record before starting the calibration process to prevent the loss of any important specification.