The calibrator That You choose for the Occupation Needs to have these qualities:

Its specifications must be four times greater than the specification of this DMM it's analyzing.

China Digital Multimeters is works will need to pay for the functions of this DMM that it calibrates. DMMs have five or more purposes, with several ranges per purpose. The calibration process should affirm the DMM Digital Multimeter is appropriate to use by means of this complete assortment of capabilities.

Frequently the DMM's guide will urge functions and minimal specifications required to calibrate the DMM correctly. The manufacturer should supply all of the test points and pass/fail limitations as evaluated against their own specification. By way of instance,"EURAMET cg-15: Strategies for Calibration of DMMs" provides tips on language, processes, measurement uncertainty, and calibration certificates.