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Brymen 257S lost calibration data

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tooki:

--- Quote from: Lightages on December 31, 2015, 01:49:22 am ---Now that the information has been made public, I can confirm that this is the correct procedure for entering calibration mode. You need only press the "Select" and "Hold" buttons long enough for the display to initiate. You must turn the selector to OHMS while holding these keys. Holding them longer is not a problem and the meter should enter calibration mode even if you hold them till all zeros show.

--- End quote ---
Which procedure is correct? From the two videos we've got, it certainly looks as though holding the buttons until zeros doesn't work. Maybe it depends on the exact model, but it certainly appears that switching to ohms and releasing the buttons must happen within one second.

Sjokolade:
Holding "Select" and "Hold" buttons and turning the selector to ohms and when display initiate count to one and release buttons works just as fine as holding "Select" and "Hold" buttons and turning the selector to ohms and holding buttons longer - both options will take you to calibration mode - I was looking for display to show 250.00ohms as mjlorton meter does but the 257s should show 000.0ohm in calibration mode.

Sjokolade:
I sent my meter back to Biall Sp. z o.o in january and they calibrated it and had it delivered to my door 10 days later - thats fast turnaround time. I payed 15$ to ship it to them and they paid for postage to me.

I have been using it for a few months now and it's like a new meter, look at these measurements.


Thanks to Wojciech at Biall Sp. z o.o and Gary Wang at Brymen for helping me out.  :-+

If it matters to anyone I never heard anything back from Tme.

dav:

--- Quote from: Sjokolade on November 20, 2015, 04:48:41 pm ---Turned on my 257s today and noticed the low battery warning, the meter turned itself on/off a few times so I replaced the both batteries.
Display now shows a 'C_Er' error for a second or two every time I turn meter on.

--- End quote ---

--- Quote from: Sjokolade on November 21, 2015, 12:44:22 pm ---...
Forgot to say that the low battery warning was flickering on/off for about 3-5 seconds before the meter turned itself on/off a few times.

--- End quote ---

Same happened to me a few days ago.
I tried to remove the "C_Er" startup message without success (I can enter calibration mode, but turning off and then on, the multimeter still shows that message).
Moreover, I also have "C_Er" message when entering in calibration mode.

ru_tash:
May be someone knows procedure to calibrate "Resistance measurement" function? Device always adding +2 or +3 last digits to all (except 000.0 Ohm and 00.00 MOhm) ranges of resistance measurements, it is quite annoying. I know this fit to the specs but I believe my BM252s can do better.

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