There are many different objects around us, including appliances. Some of them are designed for everyday life, some for production, and some are laboratory equipment that allows scientists to move science forward. What unites these devices is that they have specific characteristics, knowing which, a person can visualize the functionality of the device. The nominal value is one of the types of values that can be used with equipment.
Nominal value of measurement parameters
You need to understand: in order to collect reliable data, you need to focus on long measurements and experiments. Whereas the nominal value is primarily the attributed value, that is, the theoretical one. It is possible to rely on it only when choosing the most suitable equipment for obtainingmore accurate data reflecting reality. In some cases, the device itself is subject to calibration, during which the nominal value of the parameter is compared with the real, actual value.
As a rule, the nominal value is expressed in certain units and is issued by a reading device with a scale and pointer. It is the data indicated on the scale that can be fully called the nominal data on the device.
For an example: kitchen mechanical scales have a scale with divisions and a pointer in the form of an arrow. The division is the space between two scale marks, which has the so-called division price - this is the difference between the values of adjacent scale marks.
Different devices may have several scales with different characteristics and specifying different indicators.
Actual value
The actual value of a particular equipment parameter is determined by the calibration method. To do this, use the so-called reference device - a device with already measured values of the desired indicator. With his testimony and compare the testimony of the calibrated equipment. As a result, after a successful calibration, the correspondence between the nominal and actual value of the equipment is determined.
In production and in scientific laboratories, equipment is calibrated without fail in accordance with regulatory documentation. Whereas in everyday life, most often, you can freely rely on the values \u200b\u200bspecified by the manufacturer and not double-check them. However, if, for example, the nomin althe power value of a household appliance deviates greatly from the actual one, this may be the reason for contacting the service. Therefore, sometimes it is necessary, albeit by eye, to determine the approximate correspondence of a household appliance to the declared parameters.
How they are determined
As already mentioned, the nominal value is, first of all, indicated by the manufacturer and set during the production of the device. Even at the development stage, engineers calculate what values of the characteristics need to be obtained, and in the process of assembling the finished thing, the compliance of the design data with the result is controlled. Therefore, the consumer can be sure that the nominal values are the complete analogue of the actually issued ones.
Why you need to know both values
The main function of manufacturer-specified data is, of course, to simplify orientation in many types of equipment for the end user. It is according to the characteristics that most people choose their kitchen appliances, gadgets and household appliances. And the purchase of production or laboratory equipment is always associated with an exact knowledge of what and how the purchased will be used. In this case, the control of all indicators is standardized by documents and regularly checked by special bodies.
