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 series of measurements for accuracy, i.e. comparing a measurement of known, verified magnitude or correctness on one device with another similar measurement on a second device. The definition of BIPM is that "Operation which, under specified conditions, in a first phase, 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 instrument calibrated or secondary sample) and, in a second step, uses this information to establish a relationship to obtain a measurement result from an indication.” Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original Essay Calibration Processes: Calibration is the process of comparing measurements. Measurements are taken on two devices: the first measurement is one of known magnitude or correctness, and the second is a similar measurement on another device. The device that maintains the known magnitude or correctness is called "standard". The second device is commonly known as a test unit or test instrument.Modern Calibration Processes: Predicting the future, one can predict the need for precision that is already known and the need for consistency and comparable standards. at an international level it has led to the creation of national laboratories. Additionally, in many countries there will be a national metrology institute that will support primary measurement standards. and can be used to ensure traceability of the customer's instrument through the calibration process. Purpose and Scope: Instrument failure can occur due to a variety of factors: drift, environment, power supply, addition of components to the output circuit, 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 should be able to "hold a calibration" during the calibration interval. In other words, the design must be capable of making measurements that are within the “engineering tolerance” range when performed within established environmental conditions for a reasonable period of time. Having a design with these characteristics increases the likelihood that real measurement instruments will work as expected. Basically, the purpose of calibration is to maintain measurement quality and ensure the correct functioning of a particular instrument. Manual and Automatic Calibrations: Calibration methods for modern devices can be either manual or automatic, depending on the type of device being used. calibrated. Manual Calibration: It is the calibration process which is done by ourselves instead of just programming in any kind of machine or something we need to take all the readings of the instrument and compare those readings with the standard measurement. However, the accuracy in the manual calibration process is low compared to the automatic calibration process. The procedure is complex, but overall involves the following: (I) depressurize the system and rotate the screw, if necessary, to ensure that the needle indicates zero, (II) fully pressurize the system and ensure that the needle indicates.