| Products > Test Equipment |
| Accuracy of LCR meter? |
| (1/6) > >> |
| Faringdon:
Hi, Do you agree this LCR meter cannot realistically measure 37uH or so?...because its accuracy is stated as 2% of 2mH = 40uH. LCR meter https://www.farnell.com/datasheets/1955257.pdf |
| rs20:
Yeah, I suspect it'd be fairly useless for that, but I think your reasoning is wrong. 37uH would get rendered as "0.037" mH, except it would it would be off by up to (2% of 37 uH (negligible; ~ 1uH) PLUS 8 counts (where the least significant digit here is uH, so ~ 8uH)), so anywhere from "0.028" to "0.046" mH would be reported in the case of a nominal 37uH inductor. In other words, about +/- 25% error on the inductance value. So pretty hopeless. |
| Martin72:
Hi, --- Quote ---because its accuracy is stated as 2% of 2mH --- End quote --- According to the sheet you´ve linked, there is no remark that the 2mH range got 2%. It´s only stated, the BEST accuracy will be 2%, not on which range. Apart from this, 2mH as lowest range makes it useless. It should have 200µH range at least: https://www.amazon.de/Kapazit%C3%A4ts-Induktivit%C3%A4ts-Pr%C3%BCfvorrichtung-Meter-Selbstentladung-Strecken-Anzeige/dp/B07BR2N7GB/ref=asc_df_B07BR2N7GB/?tag=googshopde-21&linkCode=df0&hvadid=266451026830&hvpos=&hvnetw=g&hvrand=7066970650968613726&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9043666&hvtargid=pla-444110103102&th=1 My recommendation : Save a little bit more money and buy a DER DE5000. Starting at appx 100 bucks, depending on the accessoires, there´s no better choice for the money, imho. |
| bd139:
Buy Peak LCR45 from CPC. That will measure reliably down to 0.3uH which is outside it’s specified capability. I’ve tested one against a fixture with a signal generator and scope and a 6.5uH inductor was measure at 6.6uH. I wouldn’t buy the DER. There’s no warranty service or calibration options unlike the Peak. |
| Martin72:
Warranty: Who cares about it, when buying ultra-lowcost stuff like DER or peak. Calibration: It´s the same, open and shorted probes. We got LCR40 and LCR45 at work for quick checking, can do a comparison between them and the DER, if it´s interesting for anyone. |
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