Author Topic: GW Instek Bench Multimeter — is it 'ok'?  (Read 4586 times)

0 Members and 1 Guest are viewing this topic.

Offline 001Topic starter

  • Super Contributor
  • ***
  • Posts: 1170
  • Country: aq
GW Instek Bench Multimeter — is it 'ok'?
« on: November 11, 2016, 06:28:31 pm »
Hi!
Anyone have GW Instek gdm-8245 http://www.gwinstek.com/en-global/products/Digital_Meters/Benchtop_Digital_Multimeters/GDM-8245 ?
It`s not 'hi tech' anyway but extra cheap (new $300 and used ~$50).

Is it good for craft bench?
 

Offline saturation

  • Super Contributor
  • ***
  • Posts: 4787
  • Country: us
  • Doveryai, no proveryai
    • NIST
Re: GW Instek Bench Multimeter — is it 'ok'?
« Reply #1 on: November 11, 2016, 06:46:34 pm »
Its a good DMM for $50 as a measuring instrument and GW is reputable, but it will be overpriced at $300.  It has many similar features to a HH meter but it has no safety certification beyond CE and no portability, and meters from Brymen can do as much as be portable and could be cheaper even in the EU.
Best Wishes,

 Saturation
 
The following users thanked this post: 001

Offline nctnico

  • Super Contributor
  • ***
  • Posts: 26906
  • Country: nl
    • NCT Developments
Re: GW Instek Bench Multimeter — is it 'ok'?
« Reply #2 on: November 11, 2016, 06:56:21 pm »
Still when looking for a mains powered 4.5 digit bench DMM the Vici 8145 (around $170 new) is hard to beat. I hate using handheld DMMs for bench work because they clutter the workspace too much, shut down automatically and always need new batteries at the most inconvenient times.
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 
The following users thanked this post: 001

Offline nctnico

  • Super Contributor
  • ***
  • Posts: 26906
  • Country: nl
    • NCT Developments
Re: GW Instek Bench Multimeter — is it 'ok'?
« Reply #3 on: November 11, 2016, 09:31:14 pm »
I forgot to mention: if you are going to measure mains or similar voltages you really need a DMM with safety aprovals for your own personal safety.
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 

Offline saturation

  • Super Contributor
  • ***
  • Posts: 4787
  • Country: us
  • Doveryai, no proveryai
    • NIST
Re: GW Instek Bench Multimeter — is it 'ok'?
« Reply #4 on: November 11, 2016, 11:53:53 pm »
That is a steal at $50 and if you don't need safety certification as GW instek is reputed to make quality devices.  A good 50,000 count DMM is > $250, new.  As for the relay, its an older model so it has a reputation.  I have not seen one complaint of damage to date.

Yes! I`m looking for bench meter
And I can pick gdm-8245  for $50 now
Portability and CE-sertification doesn`t metter since my bench in Russia
But 50000 Counts and expecially bright LED display looks good
What about 0.03 acuracy and REAL AC+DC voltage measurment via AD636?
Is relay switching durable system?
Best Wishes,

 Saturation
 

Offline EEVblog

  • Administrator
  • *****
  • Posts: 37734
  • Country: au
    • EEVblog
Re: GW Instek Bench Multimeter — is it 'ok'?
« Reply #5 on: November 12, 2016, 03:55:48 am »
Yes! I`m looking for bench meter
And I can pick gdm-8245  for $50 now

Bargain for $50, buy it.
Current spec is 0.2% (not 0.02% on the website!), 0.03% for voltage , dual display, great for $50.
« Last Edit: November 12, 2016, 03:57:55 am by EEVblog »
 
The following users thanked this post: 001

Offline Fungus

  • Super Contributor
  • ***
  • Posts: 16646
  • Country: 00
Re: GW Instek Bench Multimeter — is it 'ok'?
« Reply #6 on: November 12, 2016, 12:38:52 pm »
It has many similar features to a HH meter but it has no portability...

Really?   :-DD


it has no safety certification beyond CE

I forgot to mention: if you are going to measure mains or similar voltages you really need a DMM with safety aprovals for your own personal safety.

Bench meters probably don't measure mains voltage very often. Even if they do, it's unlikely to be CAT III/IV mains voltage - for the reason stated above.

Even if you do use it for that you probably won't be holding the meter in your hand and it has a steel case to contain the explosion. I'm sure you can invent a scenario where this in itself is dangerous but a bench meter doesn't need to be as robust as a handheld meter IMHO.

« Last Edit: November 12, 2016, 12:47:13 pm by Fungus »
 
The following users thanked this post: 001

Offline Fungus

  • Super Contributor
  • ***
  • Posts: 16646
  • Country: 00
Re: GW Instek Bench Multimeter — is it 'ok'?
« Reply #7 on: November 12, 2016, 12:54:05 pm »
I hate using handheld DMMs for bench work because they clutter the workspace too much, shut down automatically and always need new batteries at the most inconvenient times.
I just picked up a nice Fluke 37 for $20. It's basically a Fluke 27 in bench format with a 9V power socket. I can leave it switched on all day long.   :)

It's probably worthy of a teardown video for historical purposes.

I wonder why they don't make a version of (eg) the Fluke 87 in this format. It's a really good idea.
« Last Edit: November 12, 2016, 01:01:03 pm by Fungus »
 
The following users thanked this post: 001

Offline nctnico

  • Super Contributor
  • ***
  • Posts: 26906
  • Country: nl
    • NCT Developments
Re: GW Instek Bench Multimeter — is it 'ok'?
« Reply #8 on: November 12, 2016, 01:22:25 pm »
But why forum members does not use Instek multimeters ?
Is it local model (GW is common in russian state plants) or it is not so good for private use?
GW Instek isn't a very common brand but that is mostly due to lack of marketing.
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf