The correct use of multimeters and basic maintenance measures
Multimeter is widely used in the teaching of experimental practice as well as the maintenance of instruments and meters, this paper introduces the correct use of the multimeter and requirements, as well as in the use of precautions and so on.
There are many structural forms of multimeter, and the knobs and switches on the panel have different layouts, so before using the multimeter, you should carefully understand and be familiar with the roles of each component, and also distinguish the t's of the measurement t corresponding to each scale on the disc.
Special attention should be paid to the correct use of the multimeter, because the majority of multimeter failure is caused by improper operation and use. Therefore, the correct use of the multimeter is actually the best maintenance of the multimeter.
In addition, only the correct use of the multimeter. In order to make the measurement of t error is reduced to a minimum. Multimeter should be placed horizontally before use, and check whether the pointer is in zero position, if not in zero position, should be adjusted in the middle of the multimeter mechanical zero adjustment screw, so that the needle points to zero position. Connect the connecting wire of the red test rod to the red terminal or the jack marked with "+", and the connecting wire of the black test rod to the black terminal or the jack marked with "I".
According to the object to be measured t will switch to the desired position. For example, when measuring AC voltage, the switch should be rotated to the corresponding interval. Some multimeter disc type selection knob and t limit change knob set up separately. When using. You should first rotate the type selector knob to the corresponding measured, the required gear, and then rotate the t-limit change knob to the corresponding gear, the appropriate t-limit. Special attention should be paid to the choice of species, otherwise it may cause serious consequences.
