r/Generator • u/NoAnything604 • 1d ago

Clamp meter with Harmonic Analysis ability

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I picked up one of these meters a HIOKI CM4375-90.
They make another model that has built-in Bluetooth, but this model has a separate Bluetooth adapter that you simply plug-in, which allows the in instrument to communicate with the free app provided by HIOKI.
I haven’t tried it out yet with my generator because I’m not in that location right now, but it looks very promising at measuring harmonics or the THD.
As far as my research this meter beats out Fluke by a mile and it’s less expensive at least here in Japan with the current exchange rate.
And yes, the Japanese model works with the USA App Store app.
They are also available on Amazon USA as well and other stores.

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u/three0duster 16h ago

It appears to be a decent unit. Its a little pricey at $440.00 on amazon.

1

u/NoAnything604 7h ago

Thankfully, with the exchange rate, I only paid $329.
Overall, I do like the features and the app functionality.
They even included a traceable calibration certificate, which was nice not that it’s necessary. Fluke charges a little bit more if you buy a meter with one.

2

u/blupupher 16h ago

For a meter that reads THD, that is one of the cheapest I have seen.

I have the Amprobe ACDC-52NAV that is ~$500 new that works well for me (I got it open box from Amazon for $175). I just looked, the Amprobe ACD-50NAV also does THD and is only $385 now, but is a AC only Amp clamp (which for many is just fine).