20litre markings

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20litre markings

Unread postby Jackson » Tue Mar 03, 2015 1:02 am

Ive been using my 20litre BM for a few months now and just cannot seem to nail my final volumes. Im now down to weighing water and (finally) trusting the tie road markings. Ive looked all over and cannot seem to locate a definite outline of what the 4 markings are on the 20 litre model. Are they 10, 15, 20 and 25 litres or 15, 20, 25 and 30?

My plan is to start filling to the markings then weighing out the extra 1-4 litres.

Thanks for the help.
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Re: 20litre markings

Unread postby Nesto » Tue Mar 03, 2015 1:31 am

I think there should be just 3 markings for 15l, 20l and 25l on the BM20. But to be really accurate, you should probably do your own calibration with a known volume - like a 2 or 5 liter flask or something.
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Re: 20litre markings

Unread postby red ice » Tue Mar 03, 2015 4:59 am

On my brand new bm20. The markings are at 12l, 15l, 20l and 25l. I weighed out water and found the 12l mark slightly out but the rest were spot on.
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Re: 20litre markings

Unread postby Erick » Tue Mar 03, 2015 7:50 am

The manual of my 20lBM states on page 11:

The markings on the tie rod indicate the filling level of 15l, 20l and 25l/

Could it be that different models use different markers? :?
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Re: 20litre markings

Unread postby red ice » Tue Mar 03, 2015 9:02 am

Maybe across years built.

Page 12 of my manual under the title 'mashing in' states according to my interpretation at the translation is poor

10l : 8, 10,12
20l: 12 15 20 25 ( confirmed on my 2015 model)
50l: is unclear but does include 45 50 and 55
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Re: 20litre markings

Unread postby dinnerstick » Tue Mar 03, 2015 10:51 am

yeah the older 20L models have only 15, 20, 25. I have also measured, at room temp the marking are spot on.
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Re: 20litre markings

Unread postby janox » Tue Mar 03, 2015 12:28 pm

12,15,20,25 is indeed the measurements on the 2015 model of the 20L
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Re: 20litre markings

Unread postby Jackson » Tue Mar 03, 2015 9:59 pm

Thanks. Mines the older model but 12,15,20 and 25 looks right to me. I weighed out and extra 1.6 litres over the 26 mark on sunday and ended up draining 5 in a panic because it looked way more water than I expected. I'll trust the markings 100% from now on
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Re: 20litre markings

Unread postby Soay4731 » Mon Mar 09, 2015 3:49 pm

Mine is an older model with the three ring lines. Weight measured they are 16L, 21L and 26L. The important thing to remember is 1cm equals 1 litre. So for me 14cm from the top of the spindle means I have 26litres in the tub.
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Re: 20litre markings

Unread postby Avispartner » Mon Mar 09, 2015 8:10 pm

Jackson wrote:Thanks. Mines the older model but 12,15,20 and 25 looks right to me. I weighed out and extra 1.6 litres over the 26 mark on sunday and ended up draining 5 in a panic because it looked way more water than I expected. I'll trust the markings 100% from now on

Bought mine in December 2014, the centre rod has 4 etched markers, the top one being 25 so I assume the lower three will be 20, 15 and 12 (not verified yet).
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Re: 20litre markings

Unread postby Cervantes » Thu Mar 12, 2015 4:10 pm

I'd guess that the addition of the 12 litre mark is to accommodate use of the new 10 litre malt pipe.
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Re: 20litre markings

Unread postby stevodevo » Fri Mar 13, 2015 10:25 am

Cervantes wrote:I'd guess that the addition of the 12 litre mark is to accommodate use of the new 10 litre malt pipe.


+1

That's my guess too. I don't recall where, but I'm sure I read that's the recommended fill level for the 10L malt pipe.
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Re: 20litre markings

Unread postby Dicko » Fri Mar 13, 2015 9:18 pm

I found or actually it was pointed out to me by a fellow brewer on here that weighing is the only accurate way to determine the volume of water.

I was using a 5 litre calibrated and marked measuring jug that was supposed to be accurate.
When we weighed the water it was easily proven that the markings on the jug were quite inaccurate.

The marks on the 20 litre BM are extremely close to the weighed volume.
My machine is an earlier model with the 15, 20 and 25 litre marks

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