An electrician can be found at night. You can find the property first. Usually they have an electrician's phone number. If they don't have one, you can also go to the nearby water and electricity equipment store for consultation. Electrician refers to the science and technology that studies the objective laws and applications in the electromagnetic field, as well as the two industrial production systems of electric power production and electrical manufacturing. The basic working principle of the electrician indicating instrument is to convert the measured electric quantity or non electric quantity into the deflection angular displacement of the active part of the indicating instrument. The measured value cannot be directly added to the measuring mechanism, and it is generally necessary to convert the measured value into the transition value that can be measured by the measuring mechanism. The component that changes the measured device into the transition quantity is called the measuring line. The mechanism that converts the transition value into deflection angle according to a certain relationship is called measuring mechanism. The measuring mechanism consists of a movable part and a fixed part, which is the core of the instrument. Electrician indicating instrument generally consists of measuring circuit and measuring mechanism.
