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William loh
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I was wondering what are the uses of 200mV scale in voltmeter? I mean isn't it too small for most applications? but it seems to me every meter has such small scale ,so I was wondering what is their actual usage?
Following proceedure 5 in the multimeter handbook minimum closed circuit voltage at thermocouple is 8 mV
The 200mV scale on a voltmeter is used to measure small voltage values, typically in the range of 0-200 millivolts. This scale is important for accurately measuring low voltage signals, such as those produced by sensors or electronic components.
The 200mV scale is different from other scales on a voltmeter in that it has the smallest range, allowing for more precise measurements of low voltage signals. Other scales on a voltmeter may have a larger range, such as 0-10V or 0-100V, which are used for measuring higher voltage signals.
The 200mV scale should be used when you need to measure a low voltage signal, such as those produced by sensors or electronic components. It is also useful for measuring small changes in voltage, as the smaller range allows for more accurate readings.
No, the 200mV scale is only suitable for measuring low voltage signals. If you need to measure higher voltage signals, you will need to use a different scale on the voltmeter with a larger range. It is important to select the appropriate scale for the voltage you are trying to measure in order to get an accurate reading.
Some potential errors when using the 200mV scale on a voltmeter include inaccuracies due to the precision of the scale, as well as potential noise interference from external sources. It is important to calibrate the voltmeter regularly and take precautions to minimize external interference to ensure accurate readings.