Профілактичний Заходи для Згинання Мультиметра Пойнтер і Горіння З Метра Головка
1) До вимірювання, оцінка розмір of the об'єкт to be measured, and turn the range switch to the appropriate range.
Примітка що коли вимірювання a великий об'єкт with a small range, it is very like to bend the pointer.
2) When measuring resistance, the circuit under test must be cut off from the power supply.
3) Коли тестування висока напруга або високий струм, it is заборонений to обертання діапазон перемикач. in order to prevent the contacts from arcing and damage the switch.
4) When measuring the electrolytic capacitor, it should be short-circuited and discharged before measuring.
5) When the multimeter is used incorrectly, the meter head may be burned.
The провідність напруга of the кремній діод is generally greater than {{0}}}.5V, and the forward resistance of the silicon diode is very large below 0.5V, which has little effect on the original internal resistance of the meter and can basly be ignored.
Коли the error is measured, the voltage rise will reduce the forward resistance of the silicon diode, and most of the current will be shunted by the diode to protect the meter.
The процес of встановлення щітка ручка і шестерня положення of мультиметр
1. Take out the пружина and steel ball, put them in vaseline oil, put the spring with lubricating oil into the small hole of the brush knob, and the steel ball will stick to the top of the spring. Don't lose it.
2. The brush knob installation part on the back of the observation panel is composed of 3 brush knob fixing clips, 2 brush rotation steel positioning arcs, 1 steel ball installation groove and 1 petal-shaped steel ball rolling groove.
3. Put the brush knob flat on the panel, and pay attention to the direction in which the brush is placed. Use a screwdriver to gentlely push the steel ball into the petal groove, обережно roll it off, and evenly force the brush knob into the fixed card with with your fingers.
4. Turn the panel to the front, gently set the gear switch knob on the small handle protruding from the round hole, turn the knob slowly to check whether the brush knob is installed correctly, you can hear "click", "click" Click" positioning sound.
If you can't hear it, it means that the steel ball is missing or has fallen into the gap between the brush knob and the panel, and the gear switch cannot be positioned and need to be removed and reinstalled.
5. Обережно видалити шестерня перемикач ручка ручка 2c обережно натискання ручка в в маленький отвір з ваш рука, і ат те той самий час м'яко м'яко витягнути 3 позиціонування карти один один он на протилежний сторона, сила муш бути світло і евен, so as not to break the позиціонування карта, be обережно The steel ball cannot roll off.
