| Products > Test Equipment |
| Sanwa PM300 Pocket Multimeter Review Teardown |
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| Lightages:
It isn't a matter of anyone lying, it is about proper confirmation with testing to show the design and construction does actually perform to the standard claimed. Without evidence of any real testing being done to confirm performance, it is an open question as to whether it will actually meet the claims. |
| Rbastler:
--- Quote from: Lightages on September 14, 2017, 07:11:04 am ---It isn't a matter of anyone lying, it is about proper confirmation with testing to show the design and construction does actually perform to the standard claimed. Without evidence of any real testing being done to confirm performance, it is an open question as to whether it will actually meet the claims. --- End quote --- I think Dave mentioned Sanwa tests it according to some ISO standart. That would be the evidence. |
| Fungus:
--- Quote from: Rbastler on September 14, 2017, 07:13:51 am --- --- Quote from: Lightages on September 14, 2017, 07:11:04 am ---It isn't a matter of anyone lying, it is about proper confirmation with testing to show the design and construction does actually perform to the standard claimed. Without evidence of any real testing being done to confirm performance, it is an open question as to whether it will actually meet the claims. --- End quote --- I think Dave mentioned Sanwa tests it according to some ISO standart. That would be the evidence. --- End quote --- ISO 61010 is where the CAT ratings come from. (no, you won't find a copy online, you have to pay to read it) CAT IV 300V is a lot lower than (eg.) a Fluke 87V's CAT IV 600V. It's not an "industrial electrician" rating, you can't use it on three-phase supplies or anything like that. There's no low impedance path through the meter, it has plenty of input protection, there's obviously huge gaps between the tracks on the PCB, etc. I wouldn't put any money at all on it not meeting the claimed rating. --- Quote from: Lightages on September 14, 2017, 07:11:04 am ---It isn't a matter of anyone lying, it is about proper confirmation with testing to show the design and construction does actually perform to the standard claimed. Without evidence of any real testing being done to confirm performance, it is an open question as to whether it will actually meet the claims. --- End quote --- Why should a Japanese company who doesn't sell this meter outside of Japan use a western standard of "conformance"? |
| Fungus:
--- Quote from: Muttley Snickers on September 13, 2017, 11:37:17 pm --- --- Quote from: Fungus on September 13, 2017, 03:17:17 pm ---PS: Could barely hear the buzzer on the video. --- End quote --- I played the video back a few times on two separate devices and could not hear the continuity beeper at all --- End quote --- It's definitely there. :-// --- Quote from: Muttley Snickers on September 13, 2017, 11:37:17 pm ---I initially thought there must be some type of filter enabled muting that particular audible frequency or something. :-// ??? --- End quote --- Not particularly high pitch, either. |
| EEVblog:
--- Quote from: Lightages on September 14, 2017, 07:11:04 am ---It isn't a matter of anyone lying, it is about proper confirmation with testing to show the design and construction does actually perform to the standard claimed. Without evidence of any real testing being done to confirm performance, it is an open question as to whether it will actually meet the claims. --- End quote --- The meter was tested by SGS-CSTC Standards Technical Services Co., Ltd. I have the 80 page test report. |
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