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Hacking the Siglent SDM3055 Bench DMM

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rolfdegen:
It seems similar to Noctua.. Should it be here!? I would take PR-1.

KungFuJosh:

--- Quote from: rolfdegen on May 12, 2024, 08:36:02 am ---It seems similar to Noctua.. Should it be here!? I would take PR-1.

--- End quote ---

PR-1 is insufficient if you're matching the flow of the stock fan. The PR-2 would be the correct choice, but performance/noise isn't any better than the Noctua. That said, they both look great on paper.

Inovet:
There is something in the technical characteristics. But at that time, I bought this one.
Noctua might have been better.

CFM by press... The pressure should be better. The air flow is also better. In terms of noise level, it is necessary to compare it in practice.

On my Rigol DP832 the fan was replaced, sorry - a little offtopic by Noctua NF-R8 redux-1800. It's much quieter with the same performance. But even greater silence was created by replacing the standard grille with an ordinary wire one. It turned out a little ugly - I was afraid of iron filings. Without completely disassembling the device.

Inovet:
I measured the temperature inside the multimeter case. Without fan, with standard fan, with new NB1. With new fan - temperature were like the standard ones. Without a fan - high.

And everything would be fine if the multimeter did not freeze at the start one day. Thanks to our member tautech for the quick help. There was only a problem with calibrations, but it was relatively solved.

And, recently -2 weeks ago end of April 2024, it froze again. stopped. It’s good that the homemade calibration files were saved this time on comp and cloud.

In our Siberia, in my apartment the temperature in both winter and summer is +28 Celsius. This is almost the upper limit; it is difficult to reduce the decrease and it is not necessary. I do a little amateur electronics out of old memory.

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