Products > Test Equipment
DMM safety
Traceless:
Does anyone know which safety standard guarantuees that a meter is not going to blow up (given it is used in the specified environment, but accounting for hazards like transients), reglardless of the mode selected? (Or in other words how do I know that a meter behaves like the fluke in the video below and not like the little CEN-Tech. [Time-Stamp 5:57])
I guess it would be covered one of the IEC/EN61010-XXXX norms? Is there some way to find out if the meter has actually been tested against said standard and is not falsely advertised with specs it does not meet?
https://youtu.be/OEoazQ1zuUM?t=357
bdunham7:
--- Quote from: Traceless on December 01, 2022, 10:13:03 pm --- Is there some way to find out if the meter has actually been tested against said standard and is not falsely advertised with specs it does not meet?
--- End quote ---
From a previous discussion:
https://www.eevblog.com/forum/testgear/hear-kitty-kitty-kitty-nope-not-that-kind-of-cat/msg3714598/#msg3714598
One of the problems is that even if the company or seller submits a sample to a certification lab for testing, there's no guarantee that the meter you receive will actually be manufactured the same way as the sample. So even if you verified that the claimed certification is valid and appropriate, you still have no way of knowing if what you buy is compliant and safe. So who do you trust?
ogden:
--- Quote from: bdunham7 on December 01, 2022, 10:35:08 pm ---One of the problems is that even if the company or seller submits a sample to a certification lab for testing, there's no guarantee that the meter you receive will actually be manufactured the same way as the sample.
--- End quote ---
Reputable manufacturers usually do not go route of changing standards because in case of many safety incidents whole existence of company may be at risk. So, simple rule - do not buy safety-related equipment from disposable companies.
Martin72:
--- Quote ---One of the problems is that even if the company or seller submits a sample to a certification lab for testing, there's no guarantee that the meter you receive will actually be manufactured the same way as the sample. So even if you verified that the claimed certification is valid and appropriate, you still have no way of knowing if what you buy is compliant and safe. So who do you trust?
--- End quote ---
Serious known brands and the prices.
A Meter which meets the safety standards couldn“t cost under 100 bucks (only example given), otherwise it will be a lie.
Traceless:
--- Quote from: bdunham7 on December 01, 2022, 10:35:08 pm ---From a previous discussion:
https://www.eevblog.com/forum/testgear/hear-kitty-kitty-kitty-nope-not-that-kind-of-cat/msg3714598/#msg3714598
One of the problems is that even if the company or seller submits a sample to a certification lab for testing, there's no guarantee that the meter you receive will actually be manufactured the same way as the sample. So even if you verified that the claimed certification is valid and appropriate, you still have no way of knowing if what you buy is compliant and safe. So who do you trust?
--- End quote ---
I do see your point - and of course I can not know that what I buy is compliant and safe but what I can at least try to do is to filter our stuff, that is at best questionable due to a missing or non-genuine certification. If an independent, reputable certification lab tests a product against a safety standard at least someone has put the product to test and verified that it meets that standard. Also the vendor was at least willing to spend money for that certification process. If they wanted to maximize profit no matter the costs they could have slapped the china export mark on the meter and called it a day. Of course a company could have made a modified product for certification and sell cost reduced ones with less protection but still slap the label on them.
@bdunham7, @ogden, @Martin72
At that point the question indeed is who should I trust? Fluke because everyone on the internet says so and they have the most expensive meters? Maybe Brymen, but then again their BM235 costs under 100$ so it can't be safe? I mean certification is by far not perfect but do you really think reputation/cost is a better indicator for safety?
Navigation
[0] Message Index
[#] Next page
Go to full version