What are basic error and additional error?
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What are basic error and additional error?
The basic error of a meter refers to the maximum error of that meter under specified reference operating conditions; it is also the error allowed for the meter under standard operating conditions. In general, the basic error of a meter is equivalent to its allowable error. Additional errors are those that arise when the instrument is used under non-specified reference operating conditions, such as errors caused by power supply fluctuations and temperature effects.
The basic error, also known as systematic error, is caused by factors such as the materials used in the instrument or experimental setup, the quality of manufacturing and the manufacturing processes, as well as the external environment. This type of error is usually a constant value, and it does not affect the performance of the instrument as long as it operates within its allowable range. Additional errors are usually caused by external factors such as installation, maintenance, or the competence of the users; they are generally related to human factors and are variable.
To put it simply, the basic error represents the acceptable accuracy level of the instrument, while the additional error is the discrepancy that arises from installing the instrument on a certain device, due to the structure or manufacturing processes of that device
To put it simply, the basic error represents the acceptable accuracy level of the instrument, while the additional error is the discrepancy that arises from installing the instrument on a certain device, due to the structure or manufacturing processes of that device
The basic error is the allowable error under specified conditions, while the additional error is the error caused by deviations of operating conditions from those specified.
The impact of the basic error on production requirements is acceptable; the additional errors are mainly caused by external factors, such as human errors or variations in various external conditions like temperature and humidity
In simple terms, the basic error is the error that results from the instrument’s own design and principles, while the additional error is the error that occurs during actual use due to various external factors.