Операція процедури і запобіжні заходи для використання а мультиметр
Оперування процедури
1. Before use, one should be familiar with the various functions of the multimeter, and correct select the gear, range, and probe socket based on the measured object.
2. When the size of the measured data is unknown, the range switch should be set to the maximum value first, and then switched from a small range, so that the instrument pointer indicates more than half of the full scale.
3. Коли вимірювання опір, після вибору відповідного збільшення діапазон, touch the two probes to make the pointer point at the zero position. If the pointer deviates from the zero position, the "zero adjustment" knob should be adjusted to reset the pointer to zero to ensure accurate measurement results. If zero adjust is not possible or the digital display meter emits a low voltage alarm, it should be checked in in a своєчасний спосіб.
4. Коли вимірювання опір of a certain circuit, the power supply of the tested circuit must be cut off and live measurement is not allowed.
5. Коли використання a мультиметр для вимірювання, увага повинен бути платним до безпеки персоналу та приладів обладнання. під час the test, it is not allowed to touch the metal part of the probe with hands, and it is not allowed to switch gears with electricity to ensure accurate measurement and avoid avoid steas uch as electric shock and burning of the instrument.
Запобіжні заходи для використання
1. Before using a multimeter, it is required to perform a "mechanical zero adjustment", which means that when there is no measured electricity, the multimeter pointer should be positioned at zero voltage or zero current.
2. Під час the the use of a multimeter, do not touch the metal part of the probe with your hands. This забезпечує точність вимірювання та особиста безпека.
3. Коли вимірювання a certain amount of electricity, it is not advisable to shift gears simultaneously, особливо when measuring high voltage or high current. Інакше, it may cause damage to the multimeter. If you need to shift gears, you should first disconnect the probe and then take measurements after shift gears.
4. When using a multimeter, it must be placed horizontally to avoid errors. At the same time, attention should also be paid to voiding the influence of external magnetic fields on the multimeter.
5. After using the multimeter, the transfer switch should be set to the maximum AC voltage. If not in use for a long time, the battery inside the multimeter should also be removed to prevent the battery from corroing other components inside the meter.
