How to buy a multimeter you are satisfied with
There are hundreds of models of digital multimeters. Selecting the right digital multimeter can be a difficult task. The question is how to find the right digital multimeter at the right price with the right performance for your needs.
Before choosing the first to determine the need to measure the value of what. Do you do precision metrology work? Do you really use the 7th or 8th digit to make measurements? If so, you should purchase a highly accurate benchtop digital multimeter because it is very stable. If you want to use in a custom system can choose 6 1/2 f-bit can be compatible with PXI and VXI digital multi-meter Generally speaking, there are many digital multimeter accuracy and resolution is very high, but the required measurement results do not necessarily need to have such a high degree of accuracy and resolution. While resolution is a design feature, achieving a high level of accuracy depends on the strength of the measurement technique. For example, with 8 1/2 digital multimeter to do the measurement, must be very careful and experienced, otherwise just have ** digital multi-meter may not be able to measure good results. On the other hand, there are many low-grade digital multimeter may also be the right choice. If you only need to measure the accuracy is 5%, measurement function and not much, then buy a low-grade digital multimeter. Digital multimeters are capable of measuring the basic quantities: AC and DC voltages, current and resistance. Some people's measurement needs are in between these two extremes. It is difficult to make a decision about what kind of digital multimeter to choose. Because they require high measurement accuracy and resolution, but also cheap. To make the * best choice, they are advised to read the manual and related footnotes carefully. Read the footnotes in small print There are a variety of highly accurate benchtop digital multimeters and low-grade handheld digital multimeters. However, there is a lack of consistency in the expression of the specifications of the various digital multimeters. For example, the accuracy of DC voltage is expressed as % of reading plus % of range. Some express it as % of reading plus a few more counts, while others express it as % of reading plus a few volts. For a particular digital multimeter, if you know how many counts correspond to its full scale value, you can convert one expression to another. All three of these expressions are often seen.
