Products > Test Equipment
Brymen BM869(867) alternative software.
raptor1956:
--- Quote from: retiredcaps on September 28, 2016, 08:06:27 pm ---
--- Quote from: raptor1956 on September 28, 2016, 06:58:40 pm ---I have not bought a DMM in many years and still own a Fluke 85 that's over 25 years old and a Fluke 27 that's over 30 years old, but I think I may add the BM869 in the near future. Neither of my Fluke's have more than 3200 counts
--- End quote ---
Just some corrections.
Your Fluke 85 is a 4000 count meter.
--- Quote ---And at 0.02% it's better than the 0.05% of the Fluke 87V.
--- End quote ---
The Brymen BM869 is (wrt to DCV)
http://www.brymen.com.tw/product-html/cata860/Bm860L4.htm
0.02% +/- 2d at 5V range and below
0.03% +/- 2d at 50V range
0.04% +/- 2d at 500V range
0.15% +/-2d at 1000V range
Fluke 87V is 0.05% +/- 1d in all ranges.
I say it too close to call between the 87V and BM869 depending on the range and when you consider the +/- 1d vs 2d without doing a spreadsheet or calculation.
--- End quote ---
Well, if you stay below 500V you are still better off with the BM869 than the Fluke 87V and in the voltage range where I'm more likely to be, below 50V, quite a bit better. But, beyond that, the resolution makes for better relative measurements. All in all the BM869 is the better choice IF you have other DMM's you can use that have the Fluke safety and reputation -- I have two such Flukes.
I've done some experiments recently where I used my Rigol as one of the DMM's but the Fluke's were a couple digits behind -- it would have been nice to have at least one more digit and even better two more and the DM869 gives you that.
The Brymen listing with 2d is 2d of a much higher resolution unit to begin with so you can't really make an apples to apples comparison just on the 2d versus 1d thing -- the Brymen is much higher resolution so the 2d at 500,000 counts is less than 1d at 19,999 counts.
Brian
IanB:
--- Quote from: raptor1956 on September 29, 2016, 06:29:57 am ---Well, if you stay below 500V you are still better off with the BM869 than the Fluke 87V and in the voltage range where I'm more likely to be, below 50V, quite a bit better. But, beyond that, the resolution makes for better relative measurements. All in all the BM869 is the better choice IF you have other DMM's you can use that have the Fluke safety and reputation -- I have two such Flukes.
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In Joe's multimeter destructive testing here, the BM869S withstood much more abuse than the 87V before failing. In fact the 87V failed surprisingly early.
evava:
--- Quote from: raptor1956 on September 29, 2016, 06:29:57 am --- the Brymen is much higher resolution so the 2d at 500,000 counts is less than 1d at 19,999 counts.
Brian
--- End quote ---
But, Brymen 2d is valid only for 50,000 count, so...
87V is better! ;)
2N3055:
It has 500000 hi res mode...
JackM:
This thread is going quite off topic now...
It's supposed to be about the custom Brymen serial comms software, not about the Fluke vs Brymen debate.
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