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| What's the cheapest 0.02% accuracy handheld meter |
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| MiroS:
--- Quote from: CosteC on July 13, 2023, 08:13:38 am ---I do not say it does not work. It works. But will it work next year? Probably. --- End quote --- My AN870 died by laying on the shel. |
| Fungus:
--- Quote from: AVGresponding on July 13, 2023, 08:16:21 am ---FWIW, my own philosophy is not to buy the cheapest I can find, but to buy the best I can afford... --- End quote --- But then you have to define "best" - an impossible task! That path doesn't lead to happiness. |
| AVGresponding:
--- Quote from: Fungus on July 13, 2023, 08:24:01 am --- --- Quote from: AVGresponding on July 13, 2023, 08:16:21 am ---FWIW, my own philosophy is not to buy the cheapest I can find, but to buy the best I can afford... --- End quote --- But then you have to define "best" - an impossible task! That path doesn't lead to happiness. --- End quote --- Not at all, it merely leads to a large collection of TE! :-DD In context, it means the best quality (in terms of performance, construction and warranty) in a device that meets the task criteria. |
| Fungus:
--- Quote from: AVGresponding on July 13, 2023, 11:16:15 am ---In context, it means the best quality (in terms of performance, construction and warranty) in a device that meets the task criteria. --- End quote --- So now you have to define "the task". |
| bdunham7:
--- Quote from: J-R on July 13, 2023, 06:37:28 am ---The data is literal proof in print that a "meter actually reads to 10X its spec". Also, it has the temperature at which the calibration data was taken, so you can match that environment. --- End quote --- The data is proof that the meter did read certain, specific values on that day, under the specific conditions stated and to within the uncertainty of the test stimulus, provided that is provided and traceable. That calibration data, combined with the manufacturers stated specifications and calibration interval, gives you a certain level of assurance (perhaps 95% or 99%) that the same meter will read all values within its range of measurement to within the stated uncertainties under all conditions listed (the typical +/-5C being most important, but others like RH, EF and altitude may matter some too) for the duration of the calibration interval. Those are two very different statements. I can take a Richmeter or Aneng and connect it to a standard or calibrator and verify that it reads 10.000V exactly for a 10V reference. I can even write down the temperature and make a little chart. But if I take it for a 50-mile drive out in the mountains and while testing some equipment (indoors, room temperature) I take a measurement of 7.492V, what is my confidence level that this reading is accurate to within a certain amount, say 6 counts? The answer is that while there is a good chance it might be right, you don't really know since the manufacturer 'specs' don't give you any idea. |
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