Definition: Calibration can be defined as a test in which known values ​​of the measurand are applied to the transducer and the corresponding output readings are recorded under specific conditions. Calibration is the process of comparing sets of measurements for accuracy, that is, comparing a measurement of known verified magnitude or accuracy on one device with another similar measurement on a second device. The BIPM definition is “Operation which, under specified conditions, initially establishes a relationship between the values ​​of the quantities with the measurement uncertainties provided by the measurement standards and the corresponding indications with the associated measurement uncertainties (of the calibrated instrument or the secondary standard) and, secondly, uses this information to establish a relationship making it possible to obtain a measurement result from an indication. »Say no to plagiarism. Get a tailor-made essay on “Why Violent Video Games Should Not Be Banned”? Get the original test Calibration Process: Calibration is the process of comparing measurements. The measurements are taken on two devices: the first measurement being that of a known quantity or accuracy and the second being a similar measurement on another device. The device holding the known magnitude or accuracy is called a “standard”. The second device is commonly called a test unit or test instrument. Modern calibration processes: By predicting the future, one can foresee that the need for accuracy is already known and the need for consistency and comparable standards. on an international scale led to the creation of national laboratories. Furthermore, in many countries there will be a national metrology institute which will ensure compliance with primary measurement standards. and can be used to ensure traceability of customer's instrument through calibration process. Purpose and Scope: Instrument error can occur due to various factors: drift, environment, power supply, adding components to the output loop, process changes, etc. Since a calibration is performed by comparing or applying a known signal to the instrument under test, errors are detected by performing a calibration. The calibration process begins with the design of the measuring instrument that is to be calibrated. The design must be capable of “maintaining calibration” during the calibration interval. In other words, the design must be capable of performing measurements that are within the "engineering tolerance" range when performed under the stated environmental conditions over a reasonable period of time. Having a design with these characteristics increases the likelihood that actual measuring instruments will perform as intended. Basically, the purpose of calibration is to maintain the quality of the measurement as well as to ensure the proper functioning of a particular instrument. Manual and automatic calibrations: Calibration methods for modern devices can be both manual and automatic, depending on the type of device used. calibrated.Manual Calibration: It is the calibration process which is done by ourselves rather than just programming in any type of machine or something we need to take all the readings from the instrument and compare these readings with the standard measurement. However, the accuracy of the manual calibration process is low compared to the automatic calibration process. The procedure is complex, but it broadly involves the following: (I) depressurize the system and turn the screw, if necessary, to ensure that the needle points to zero, (II) completely put the system under pressure..