Środki ostrożności do uniknąć uszkodzenia do multimetr
1. W większość przypadki, uszkodzenie z cyfrowy multimetr jest spowodowany przez zły pomiar pozycja. Dla przykład, kiedy pomiar mierzący the AC sieciowo-2c the measurement position is selected to be placed in the electric block. In this case, once the test pen touches the mains, it be be caused instantly. The internal components of the multimeter are damaged. Therefore, before use the multimeter to measure, be sure to check hether the measurement gear is correct. After use, set the measurement option to AC 750V or DC 1000V, so that no matter what parameter is mismeasured in the next measurement, it will not cause damage to the digital multimeter.
2. Some digital multimeters are damaged because the measured voltage and current exceed the range. For example, if the mains is measured at the AC 20V gear, it is easy to cause damage to the AC amplifier circuit of the digital multimeter, and the multimeter loses the AC measurement function. When measuring DC voltage, if the measured voltage exceeds the measurement range, it is also easy to cause circuit failure in the meter. When measuring the current, if the actual current value exceeds the range, generally only the fuse in the multimeter will be blown, and no other damage will be caused. Therefore, when measuring voltage parameters, if you do not know the approximate range of the measured voltage, you should first set the measurement gear to the highest gear, and then change gears to measure after measuring its value to obtain more accurate values. If the voltage value to be measured is far beyond the maximum range that the multimeter can measure, it should be equipped with a high-resistance measuring probe.
3. The upper range of the DC voltage of most digital multimeters is 1000V, and the upper range of the AC voltage is 750V. Therefore, the highest measured voltage value is below the upper range of the multimeter, and general the multimeter will not be damaged. if the upper range of the multimeter is exceeded, it is likely to cause damage to the multimeter.
4. Do not measure voltage in the current file, resistance file, diode file and buzzer file. When the meter is being tested, the function switch cannot be rotated, especially when the voltage is high and the current is high.
5. Jeśli ty używasz a multimetr do sprawdzaj jakość z komponentów lub mierzy rezystancja z komponentów w obwód, obwód jest nie dozwolony do być naładowany, ponieważ multimetr używa wewnętrzny bateria z multimetr do praca. Jeśli obwód jest naładowany, it jest łatwy do uszkodzenie the internal battery of the multimeter. It will impact the accuracy of the measurement. Jeżeli multimetr jest zablokowany przez ubezpieczenie, it jest łatwe to uszkodzenie ekwiwalent opór z elektryczny bloku.
6. Kiedy bateria symbol pojawia się na ekran, it oznacza że bateria jest niska i bateria powinna być wymieniona. po każdy pomiar, licznik should be turned off. Regardless of use or storage, wilgoć and woda są surowo zabronione.
