Review of a UNI-T UT8805E 5 ½ Digit Bench Multimeter

[@keyspost]

Thank you for such a detailed review of the UNI-T UT8805E bench multimeter, very professional and useful!

[@kevkabluebird1032]

Boot-up time, ye can agree with its importance. I use my old HP bench DMMs or even some sovjet-bench DMMs (all digital) quite often, as they have like no boot-up time at all (or just a sec) :D

[@Mtaalas]

for 400€ or so, that's amazing performance... it's crazy the world we live in these days. Yeah i'm old... :D

[@kuro68000]

Thanks, I was considering one of these. The fan noise though... And it doesn't seem to be temperature dependent.

[@KerryWongBlog]

Yeah, the fan is unfortunately on the noisy side and is constantly on.

[@jurgenkruger3932]

It should present ESR measurements and inductor measuring, too.

[@piotrburnos1004]

Hi! I appreciate your reviews. I also do reviews on Polish YT channel (Metrology). But I lacked information: what are the mathematical functions? What are the display modes? What is the actual measurement frequency (VM comp output)? How can you trigger a multimeter? Accuracy is not everything...

[@KerryWongBlog]

I tried to cover as much as I could in this video. If there are interests in these features I can demonstrate in a separate video.

[@TechProbe]

good measurement considering its price. at 15m22s, 0.020nF=20 pico Farad ??

[@jorggradert1854]

Yes 0.020nF is 20pF and not 20ųF. I am shure the creator know as well and did speak out wrong. This happen to me also once in a while.

[@TechProbe]

@jorggradert1854 I thought so.

[@ChrisJackson-js8rd]

is the input impedance also why the display on my hp 3457a jumps around when not being used? i always wondered why it did that. the manual said it was normal but didn't get into the why.

[@originalmianos]

Stray electro magnetic fields, radio and all sorts things can induce voltage differentially in leads. Specially when there is a near open circuit at the meter. If you short the leads it will be dissipated as it has a path to balance it out. I have a 3478 myself with a very high input resistance/impedance and see the same.

[@jurgenkruger3932]

Earth magnetic field, and other electro-magnetic disturbances, which surrounds us. Even if a vehicle passes your house, you can measure that. 😂

[@jspencerg]

Did you verify the input impedance? I think you would have shown what a mediocre instrument this is if you'd compared it's performance to the ut-61e+.

[@rda6468]

teardown! thanks

[@paulcohen1555]

They forgot to type one 0 (zero) in the AC BW spec.

[@za_ozero]

Is this device floating?

[@KerryWongBlog]

The inputs are isolated if that's what you were asking.

[@za_ozero]

@@KerryWongBlog im asking if the device's negative input lead is at mains ground potential like most of oscilloscopes are. The device is mains powered so there's a difference to battery powered multimeter, unless there is a small isolation transformer inside the device to power it or something like that

[@KerryWongBlog]

@@za_ozero Unlike oscilloscopes, bench multimeter's inputs are all isolated. The multimeter common input can be floated to +-500Vpp on this meter according to the spec and labeling on the front panel.

[@za_ozero]

@@KerryWongBlog thanks

[@abzaman77]

Teardown please!

[@KerryWongBlog]

It's coming!

[@francoperrot9933]

Durante la visualizzazione dei grafici, quando la memoria è piena il multimetro si inchioda e bisogna spegnerlo per sbloccarlo, che schifo. La gestione della reimpostazione manuale delle soglie di un grafico è orribile, non compratelo se dovete visualizzare grafici. L'autoscaling non esiste, quello manuale non funziona se la memoria è piena, che schifo. L'istogramma lo trovo inutilizzabile.