The accuracy level is calculated by dividing the minimum resolution by the range. Grade 0.5 means 0.5%, which can be achieved by a general multimeter.
General handheld multimeter such as FLUKE 15B, 17B accuracy is three and a half, 0.1% is 0.1 grade;
The desktop multimeter is generally five and a half start, there are seven and a half, eight and a half;
Select the gear, in addition to the first significant number there are several, such as 0.00001mV, the decimal point after the significant number has 5, that is, five and a half; The measured value, for example, 001.0002V, is six and a half digits except that the first significant digit is 6 digits;
The accuracy level is 0.5.
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At present, the chip scheme of the clamp digital multimeter is the same as that of the ordinary digital multimeter, so the accuracy level is also the same.
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The 3-bit semi-1999 word digital multimeter has been popularized, and the error range can reach 0.5%, that is, the accuracy level is 0.5. Many models of clamp-on digital multimeters are 4000 words or 6000 words, and the accuracy is higher, so there is no problem to reach 0.5.