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New EEVblog BM786 Multimeter

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Wytnucls:

--- Quote from: EEVblog on February 23, 2021, 02:03:19 pm ---
--- Quote from: Wytnucls on February 23, 2021, 12:57:08 pm ---Interesting video, but it still doesn't answer the question of why Brymen installed an underrated SIBA 400mA fuse instead of a more appropriate 630mA one, in their 600mA range multimeter?

--- End quote ---

Fluke and Keysight use a 440mA fuse on the 600mA range, better ask them too.

--- End quote ---

That's been addressed in an earlier post.
Bussmann doesn't make a 600mA fuse for multimeters and thus Fluke and Keysight limit their range to 400mA, with some allowance above for a stated limited time.

The Fluke 87 V has a a range of 400mA only, with a specified limit of 400mA continuous and overload 600mA for 18 hours.
The Fluke 179 has a range of 400mA only, with a specified limit of 600 mA overload for 2 minutes maximum, 10 minutes rest.

The Brymen 786 should have a limited mA range of 400mA, not 600mA, to avoid heat damage to the meter.

Keysight: Current can be measured at 440 mA continuously, and > 440 mA to 600 mA for 20 hours maximum.
To avoid blowing the multimeter’s 440 mA fuse, use the terminal only if you are sure the current is less than 440 mA.

joeqsmith:
Enjoyed the video on the black art of fuses.   

AVGresponding:

--- Quote from: EEVblog on February 23, 2021, 11:51:32 am ---
--- Quote from: Brumby on February 23, 2021, 11:13:26 am ---
--- Quote from: MK14 on February 23, 2021, 11:06:00 am ---It seems the Australians, have accepted it, and don't consider it swearing.

--- End quote ---

In 99% of situations, it wouldn't even raise an eyebrow.

--- End quote ---

Only with the bloody poms, Canadians and Singaporeans.
https://en.wikipedia.org/wiki/So_where_the_bloody_hell_are_you%3F

--- End quote ---

As far as we poms go, it's only really the knitted cardie brigade that gets upset by swearing these days.

I listen to a lot of BBC Radio 4 and it's quite common to hear much stronger language than that in the 6:30 pm comedy slot.

I guess MK14 hasn't heard Dave telling the camera to focus yet, that one always makes me chuckle... and he should definitely avoid AvE's channel. He's Canadian btw...



On topic, it would seem to make sense as Wytnucls suggests for Brymen to rate the meter for 400mA continuous and 600mA peak.

Algoma:
BM786 Arrived today, bit of a quirk on the Ohms Auto Range and Diode Check.. Flickers around kohms and Mohms then settles on 1Mohms with or without leads attached, after a while finally goes to OL after quite a while. Low Ohms (Continuity check, and Diode check both beep randomly).

joeqsmith:

--- Quote from: Algoma on February 23, 2021, 07:02:19 pm ---BM786 Arrived today, bit of a quirk on the Ohms Auto Range and Diode Check.. Flickers around kohms and Mohms then settles on 1Mohms with or without leads attached, after a while finally goes to OL after quite a while. Low Ohms (Continuity check, and Diode check both beep randomly).

--- End quote ---

That doesn't seem right.  I wonder what "quite a while" means.

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