Explosion-proof multimeter is one of the common electronic measuring instruments in the field of electronic measurement, mainly used for measuring voltage, current, resistance and other basic parameters, has a very important role in industrial production. But with the growth of use time, explosion-proof multimeter will gradually aging, service life will gradually shorten, this is also need to pay attention to. So, how long is the service life of the explosion-proof multimeter? Let's find out

(1) The use of a multimeter to develop a good habit, is to take a look before each measurement gear placement is correct. Formed such a habit, the pro

Principle of digital multimeter: high sensitivity magneto-electric DC current correction (microammeter) as the head use. When a small current passes t

Usage of multimeter and matters needing attention:1. When using a multimeter, we must pay attention to the gear position first, distinguish the resistance file, AC or DC file, voltage or current file, etc.2. After determining the gear position, if there is no concept of the size to be measured, first detect from the highest gear position;3. After use, adjust the gear to the high level of AC voltage.Use method and precautions of dial meter:1. Before using the dial, ensure that there is no voltage on the measured element;2, before use, the marker short circuit test and open circuit test to ensure that the instrument is easy to use;3, after the measurement to the measured component full discharge;4. Two people should be used to test the insulation of high voltage equipment with a dial.

a, before use, should carefully read the relevant instructions, familiar with the power switch, range switch, jack, special jack function.b. Put the p

The working principle of the clamp meter ammeter: The clamp meter is mainly composed of the current transformer, clamp wrench and a commutating magnet