Laboratory equipment during the test
The multimeter can be checked by the value resistance and your own power supply. If (such as: power 12V, quasi multimeter shows 12V can use this data, if there are differences, it shows a problem, need to introduce third instruments, set the table times according to the 2 instruments using range, set up some more measurement points, such as 1V, 2V, 5V, 10V......)
During the verification methods can be divided into 5 categories: (1) to participate in interlaboratory comparison; (2) the use of certified reference material; (3) with the same accuracy grade of another device or several devices in the value comparison; (4) to be measured the stable value of re determination (i.e. use verification the standard during verification); (5) in resources permitting, self calibration can be of high grade.
Verification is a verification, and period verification is a period check. The general requirements for laboratory ability shall be subject to the period verification during the 1 test cycles, that is to say, verification must be carried out, but also to be checked during the period.
