ANENG goes crazy with new meters

[ElectricPower]

Then, they will learn...

[Fungus]

I have an ANeng AN870. It has hanged on a screw on the wall in almost 6 mounth without use. For couple of weeks ago i noticed the display (the glass forran the screen) was missing. I found it on the floor....

That's happened to a lot of people with the 870, including me.

I never had a problem with any other Anengs though.

[ElectricPower]

I think Aneng has some good multimeters for the price. Off curse no Fluke or Brymen killer, men a good number two meter for low voltage measurements.

[Fungus]

I think Aneng has some good multimeters for the price.

I think Aneng has some good multimeters, period.

(and also some bad ones)

[rsjsouza]

We haven't had a new Aneng meter for ages, I hope they're OK.

Aneng has been active, but releasing a lot of products that are not as interesting as the AN8008/8009 with its 10000 counts at dirt cheap prices (the first time I recall they were put on the world's map). About a year ago I got an M118A for evaluation and it was not a good meter. I see they have also diversified a bit with clamps, cellphone-style, electrical testers, measuring devices, etc. Not to mention meters with features such as voice activation, rechargeable batteries, bluetooth, etc.

[tooki]

They are suprisingly accurate for DC measurements.

It’s not hard to make a multimeter that is quite accurate. The difficulty is making one that is just as accurate 30 years later, without any recalibration. (This is something Fluke is exceptionally good at.)

A great "number two" meter to have, and wery sheap too.

Totally agree. I have an 8008 and it’s a great little meter for low-energy circuits.

[LeonR]

Aneng just dropped a new model: SZ20, with 25K counts, dual readings and some nice features like AC+DC mode:



https://www.aliexpress.com/item/1005005128640327.html

[Fungus]

Aneng just dropped a new model: SZ20, with 25K counts, dual readings and some nice features like AC+DC mode

Speak of the devil... 

I was just thinking they need to make a solid, no-nonsense meter. Maybe this is the one.

Seems to have all the features, plus bar graph. I wonder if it's a true high-update bar graph or if it goes in steps of 4 at the same update rate as the numbers like some of their other meters.

If it's a real bar graph then this could be a meter to watch. 

I don't see it on the Zotek page, I wonder who the OEM is...

The official store has a cheezy video: https://www.aliexpress.com/item/1005004427038388.html

Edit: I wonder what the "DONT INPUT VOLTAGE" segments on the screen are for...

Edit: Accuracy seems very low for a 25000 count meter - only 0.2% on DC voltage. 

[Fungus]

Hang on, I see two more new meters on the store!

There's a "SZ19" 6000 count manual range meter that looks like that other one: https://www.aliexpress.com/item/1005004427038388.html

Also a new "V9" meter that goes up to 2000 volts, in the style of their 'chunky range of meters.

https://www.aliexpress.com/item/1005005076792395.html

[wasedadoc]

That link two posts above is for the SZ19 which appears to be the non-auto ranging version.  The SZ20 pictured a few posts above has the slightly different "Voltage input forbidden".  Maybe comes on when switched to modes other than voltage/frequency etc.

[Fungus]

This "M20" doesn't ring any bells either:

https://www.aliexpress.com/item/33011591232.html

It's physically a lot smaller than those others...

[rsjsouza]

These new ones are very similar to Mestek's style, but I don't see them in their page as well...

http://www.mestek-tools.com/

I'll keep looking...

[floobydust]

The Zoyi ZT-Y2 review video in post #189,
I thought the LCD contrast appears not very good, I wish they'd dump the stupid (grouped segments) bargraph for a lower mux factor. Even with higher 4.5V power available, perhaps VDD is 3.6V... it has even worse contrast now.
I have a Mestek with negative contrast LCD, it is quite readable.

[pavlik222]

Hello. This multimeter has a decent temperature drift. The highest accuracy is observed at a temperature of 18 degrees Celsius. The RM219 does not have this - it can be "boiled", but there will be no drift.

[rsjsouza]

The Zoyi ZT-Y2 review video in post #189,
I thought the LCD contrast appears not very good, I wish they'd dump the stupid (grouped segments) bargraph for a lower mux factor. Even with higher 4.5V power available, perhaps VDD is 3.6V... it has even worse contrast now.
I have a Mestek with negative contrast LCD, it is quite readable.

I just did a thorough evaluation of the ZT-Y2 on my channel and indeed the LCD is really not great.

However, one interesting point about this guy is that the protection components and the slots are much better placed on the board (when compared to the ZT-Y), protecting the switch and physically far from the main IC. On my moderate voltage tests the meter survived without trouble, but obviously not CAT III 600V as printed on its fascia. The ceramic fuses are hollow as well, thus fake.

[pavlik222]

Overview of the clone Zoyi ZT-225: https://mysku.club/blog/aliexpress/94958.html

[shapirus]

Overview of the clone Zoyi ZT-225: https://mysku.club/blog/aliexpress/94958.html

Not really a clone, I think. It looks like it's the same meter, manufactured at the same factory and branded individually for whoever is willing to pay for their branding.

[pavlik222]

Overview of the clone Zoyi ZT-225: https://mysku.club/blog/aliexpress/94958.html

Not really a clone, I think. It looks like it's the same meter, manufactured at the same factory and branded individually for whoever is willing to pay for their branding.

Yes, rather Aneng SZ20 is a clone of Zoyi (ZT-225, this is the original from OEM manufacturer Zoyi). The electronic board of my Richmeters RM219 is labeled ZT219.

[pavlik222]

Some more photos of Aneng SZ20 giblets.

[pavlik222]

More.

[floobydust]

That's a FAIL - the MOV's and PTC are on the wrong side of the board! So the PCB trace seeing HV has a long trip across the board and surely arcs to something else.
This is why we TEST the boards to 61010, to catch these mistakes.
It's too bad their PCB designer does not understand high voltage design, and they are the only person in china doing the layout on all of these multimeters. They all have the same mistakes over and over and over.

[exe]

That's a FAIL - the MOV's and PTC are on the wrong side of the board!

Ha-ha, for a moment I thought you meant they should have been mounted on the bottom side of pcb 

[floobydust]

That's a FAIL - the MOV's and PTC are on the wrong side of the board!

Ha-ha, for a moment I thought you meant they should have been mounted on the bottom side of pcb 

Yeah I was meaning left vs right. You can flip it and look at the other side (LCD, rotary switch) and I'll bet it's a disaster following the input jack trace over to the MOV/PTC/MELF's. Could not find board pics of that.
If only they could reverse-engineer a Fluke or Brymen, minus the dyslexia. They should try some real 61010 testing to educate their PCB layout guy.

ZT-Y2 has the extra 4-digit (temperature&freq) display compared to ZT-Y, so I would expect poorer contrast even though it's 3xAAA 4.5V power. The bar graph is grouped so around 20 segments looking like 100 lol. Another waste of mux ratio. More more more but less less less performance.
I'd rather have less information on the LCD and greater contrast. How useful is staring at "0020"? Oh and I know my line frequency DUH.

[Fungus]

Overview of the clone Zoyi ZT-225: https://mysku.club/blog/aliexpress/94958.html

Not really a clone, I think. It looks like it's the same meter, manufactured at the same factory and branded individually for whoever is willing to pay for their branding.

Zoyi are the OEM for these meters. Everybody else is the rebrander.

See how many you recognize: https://zotektools.com/products/

[pavlik222]

See how many you recognize: https://zotektools.com/products/

I wrote about it. Only I don’t understand why there is no ZT-225 multimeter on the official ZOTEK website?