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techtalk:ref:tools159 [2018/12/16 18:00] hippysmack [Multimeter] |
techtalk:ref:tools159 [2018/12/16 18:21] hippysmack [Multimeter] |
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[[:techtalk:menu|{{ :techtalk:gototechnicalmenu.jpg|}}]] | [[:techtalk:menu|{{ :techtalk:gototechnicalmenu.jpg|}}]] | ||
====== REF: Tools - 159 ====== | ====== REF: Tools - 159 ====== | ||
- | ====== Multimeter ====== | + | ====== Multimeter (VOM) ====== |
+ | See also, [[techtalk:evo:elec01#evoelectrical_system|Electrical Basics]] in the Sportsterpedia. \\ | ||
- | Multimeters are extremely useful and are pretty hardy. \\ | + | A multimeter or a multitester, also known as a VOM (volt-ohm-milliammeter), is an electronic measuring instrument that combines several measurement functions in one unit. ((https://en.wikipedia.org/wiki/Multimeter)) \\ |
+ | A typical multimeter can measure voltage, current, and resistance. \\ | ||
+ | Analog multimeters use a microammeter with a moving pointer to display readings. \\ | ||
+ | Digital multimeters (DMM, DVOM) have a numeric display, and may also show a graphical bar representing the measured value. \\ | ||
+ | Digital multimeters are now far more common due to their cost and precision, but analog multimeters are still preferable in some cases, for example when monitoring a rapidly varying value. \\ | ||
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+ | A multimeter can be a hand-held device useful for basic fault finding and field service work, or a bench instrument which can measure to a very high degree of accuracy. ((https://en.wikipedia.org/wiki/Multimeter)) \\ | ||
+ | They can be used to troubleshoot electrical problems in a wide array of industrial and household devices such as electronic equipment, motor controls, domestic appliances, power supplies, and wiring systems. \\ | ||
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+ | Multimeters are available in a wide range of features and prices. ((https://en.wikipedia.org/wiki/Multimeter)) \\ | ||
+ | Cheap multimeters can cost less than US$10, while laboratory-grade models with certified calibration can cost more than US$5,000. | ||
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+ | Multimeters are extremely useful and are pretty hardy. ((sifty of the XLFORUM http://xlforum.net/forums/showthread.php?t=1592463&page=42)) \\ | ||
But using the wrong setting, wrong scale, or performing the wrong type of measurement will at best give meaningless results, and at worst smoke the meter. \\ | But using the wrong setting, wrong scale, or performing the wrong type of measurement will at best give meaningless results, and at worst smoke the meter. \\ | ||
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* Make a good contact with the probes when trying to read the display. | * Make a good contact with the probes when trying to read the display. | ||
* The values may move a little, but generally they will fluctuate around a meaningful value if the contact point is solid. | * The values may move a little, but generally they will fluctuate around a meaningful value if the contact point is solid. | ||
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+ | | [[techtalk:ref:trouble07#reftroubleshooting_-_07|Testing an oil pressure switch]] | | ||
+ | |{{:techtalk:ref:trouble:testing_the_oil_pressure_switch_7_by_hippysmack.jpg?direct&300|}}| | ||