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How to use avometer
From;    Author:Stand originally
The note of the use of avometer
(1) before using avometer, should undertake first " mechanical zero " , was not being measured namely when n, make avometer finger points to in 0 voltage or of 0 electric current locally.
(2) in using avometer process, cannot contact the metallic part that expresses a pen with the hand, what can assure to measure on one hand so is accurate, also can make sure person is safe on the other hand.
(3) when measuring some n, cannot measuring while shift gear, when measuring tall voltage or big electric current especially, should notice more. Otherwise, can make avometer is destroyed. If need shift gears, should disconnect first watch pen, shift gears hind is measured again.
(4) when avometer is being used, must the level is placed, lest cause an error. In the meantime, notice even avoid the effect of outside magnetic field to avometer.
(5) avometer is used end, should alternating voltage of transfer switch park the biggest block. If be not used for a long time, still answer to take the battery of avometer interior, lest batteries corrodes parts of an apparatus of the other inside the watch.
The use </STRONG that <STRONG> ohm blocks>
One, the fold with right choice. When ohmmeter measures resistance, should choose proper fold, make directive of pressing with a finger is near median. Had better not use scale left the part of 1/3, this part scale is concentrated very poor.
2, zero wants before using.
3, cannot electrified measure.
4, the resistor that be measured cannot have shunt-wound spur track.
5, measure transistor, electroanalysis when the capacitance equivalent resistance that has polarity element, must notice the polarity of two pens.
6, with avometer the ohm of different times is blocked measure nonlinear when the equivalent resistor of component, measuring a resistance is not identical. Because each are blocked,this is median resistor and spend what each not same place causes electric current completely, in rigid list, general fold is smaller, measure the block that give the value is less.
When avometer measures dc
One, undertake mechanical zero.
2, the span archives with right choice.
3, use avometer electric current is blocked when measuring electric current, in answering to measure avometer series connection circuit in the quilt, the electric current that because string together join only,just can make had shed ammeter and be measured spur track electric current is identical. When measuring, should disconnect to be measured spur track, avometer pen of red, black list is strung together receive be in two when be disconnected. Should notice ammeter particularly cannot paralell connection is received circuit is measured in the quilt in, such doing is very dangerous, make extremely easily burn down of 10 thousand watches.
4, notice polarity of the n that be measured.
5, use scale and reading correctly.
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