Share volume measurements...

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Share volume measurements...

Unread postby redwing_al » Wed Dec 31, 2014 1:16 pm

I'm wondering if anyone has made a dipstick marking off the litres of water in the 20l BM, if so, would you share the measurements that you have with me? Also, the marking rings on the center rod, what volumes do they indicate? I saw a nice drawing here for the 50L, but I've not found anything specific to the 20l. Maybe I"m just missing it.

thank you
Eagle & Schmitt Brewing
Keg 1:
Keg 2:
Keg 3:
Keg 4:
FastFermenting Vessel 1: ~
FastFermenting Vessel 2: ~
Next Up: Don't Wheaty, Be Hoppy (Wheat IPA)

Total BM Brews: 10
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Re: Share volume measurements...

Unread postby Lindh » Wed Dec 31, 2014 3:48 pm

I have the 50l but did an exact measurement of the rod measures and they were spot on. "Ze germans...", gotta love their precision.
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Re: Share volume measurements...

Unread postby dinnerstick » Wed Dec 31, 2014 4:05 pm

same here with the 20. love 'em, fear 'em, whatever, got to admit they are accurate!
(is that racist?)
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Re: Share volume measurements...

Unread postby redwing_al » Wed Dec 31, 2014 4:39 pm

dinnerstick wrote:same here with the 20. love 'em, fear 'em, whatever, got to admit they are accurate!
(is that racist?)


what are the measurements on the 20l?
Eagle & Schmitt Brewing
Keg 1:
Keg 2:
Keg 3:
Keg 4:
FastFermenting Vessel 1: ~
FastFermenting Vessel 2: ~
Next Up: Don't Wheaty, Be Hoppy (Wheat IPA)

Total BM Brews: 10
redwing_al
 
Posts: 144
Joined: Thu Nov 06, 2014 12:08 am
Location: Michigan, USA

Re: Share volume measurements...

Unread postby dinnerstick » Wed Dec 31, 2014 6:02 pm

i don't have access at the moment, but the three stripes on the center post are exactly 15, 20, 25L. as measured carefully by me and other skeptics... measure the distance between two of them. it scales linearly. (ie. divide by 5 and that's your 1L dipstick interval)
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Re: Share volume measurements...

Unread postby Lindh » Wed Dec 31, 2014 6:07 pm

dinnerstick wrote:(is that racist?)


No, not racism. Germans love precision and accuracy is perfection. Racism we'll leave to other forums. Speidel are good at what they do and their goods delivers accuracy and efficiancy. Love it!
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Re: Share volume measurements...

Unread postby redwing_al » Wed Dec 31, 2014 7:22 pm

dinnerstick wrote:i don't have access at the moment, but the three stripes on the center post are exactly 15, 20, 25L. as measured carefully by me and other skeptics... measure the distance between two of them. it scales linearly. (ie. divide by 5 and that's your 1L dipstick interval)


thanks!
Eagle & Schmitt Brewing
Keg 1:
Keg 2:
Keg 3:
Keg 4:
FastFermenting Vessel 1: ~
FastFermenting Vessel 2: ~
Next Up: Don't Wheaty, Be Hoppy (Wheat IPA)

Total BM Brews: 10
redwing_al
 
Posts: 144
Joined: Thu Nov 06, 2014 12:08 am
Location: Michigan, USA

Re: Share volume measurements...

Unread postby we5ty » Wed Dec 31, 2014 11:26 pm

Hi all,
I did my first brew yesterday arvo after spending the morning measuring and remeasuring my new BM 20. I got the same results twice, but they seemed really odd. I will measure again before next brewday to see if they correlate. I measured on my flat garage floor and weighed in the water using a digital scale. The markings were taken using a ruler held vertical against the heating element in front of the side weld.
My results (in mm):
1L= 11
2L= 23
3L= 34
4L= 44
5L= 54
6L= 66
7L= 72 (i assume this number is slightly less due to the element/tap filling but not really sure)
8L= 88
9L= 98
10L= 109
11L= 119
12L= 129 The 4th line is between 12-13L
13L= 139
14L= 149
15L= 159 The 3rd line is between 15-16L
16L= 169
17L= 179
18L= 189
19L= 204 (same result on 2 measurements - not sure why as there is no reason for why it is different)
20L= 214 The 2nd line is between 20-21L
21L= 224
22L= 234
23L= 244
24L= 254
25L= 265 The 1st line is between 25-26L. I added 0.5L to my 25L measurement and it came exactly to the top line = 25.5L
26L= 278
27L= 288
28L= 298
29L= 308
30L= 318

The fact the numbers weren't uniform did my head in - why i measured twice. In the end I took papazian's advice and relaxed and had a homebrew... then just put on a brew.

Can anyone else have a look at their dipstick to see if they correlate with my figures?

Cheers,

westy
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Re: Share volume measurements...

Unread postby royco » Thu Jan 01, 2015 11:53 am

dinnerstick wrote:same here with the 20. love 'em, fear 'em, whatever, got to admit they are accurate!
(is that racist?)



Dinnerstick that sounds like something Ali G would have said.
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Re: Share volume measurements...

Unread postby redwing_al » Thu Jan 01, 2015 1:57 pm

AWESOME, Thank you!


we5ty wrote:Hi all,
I did my first brew yesterday arvo after spending the morning measuring and remeasuring my new BM 20. I got the same results twice, but they seemed really odd. I will measure again before next brewday to see if they correlate. I measured on my flat garage floor and weighed in the water using a digital scale. The markings were taken using a ruler held vertical against the heating element in front of the side weld.
My results (in mm):
1L= 11
2L= 23
3L= 34
4L= 44
5L= 54
6L= 66
7L= 72 (i assume this number is slightly less due to the element/tap filling but not really sure)
8L= 88
9L= 98
10L= 109
11L= 119
12L= 129 The 4th line is between 12-13L
13L= 139
14L= 149
15L= 159 The 3rd line is between 15-16L
16L= 169
17L= 179
18L= 189
19L= 204 (same result on 2 measurements - not sure why as there is no reason for why it is different)
20L= 214 The 2nd line is between 20-21L
21L= 224
22L= 234
23L= 244
24L= 254
25L= 265 The 1st line is between 25-26L. I added 0.5L to my 25L measurement and it came exactly to the top line = 25.5L
26L= 278
27L= 288
28L= 298
29L= 308
30L= 318

The fact the numbers weren't uniform did my head in - why i measured twice. In the end I took papazian's advice and relaxed and had a homebrew... then just put on a brew.

Can anyone else have a look at their dipstick to see if they correlate with my figures?

Cheers,

westy
Eagle & Schmitt Brewing
Keg 1:
Keg 2:
Keg 3:
Keg 4:
FastFermenting Vessel 1: ~
FastFermenting Vessel 2: ~
Next Up: Don't Wheaty, Be Hoppy (Wheat IPA)

Total BM Brews: 10
redwing_al
 
Posts: 144
Joined: Thu Nov 06, 2014 12:08 am
Location: Michigan, USA

Re: Share volume measurements...

Unread postby JPSussex » Thu Jan 01, 2015 9:08 pm

I made a dipstick with stainless threaded rod and set pairs of nuts at the appropriate heights by weighing water in. I always start with 23l so weigh it in every time, only takes a few minutes and if you use Beersmith or similar software you know what quantities to add for sparge, and top-up.
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Model: 20 litres

Re: Share volume measurements...

Unread postby coalminer » Fri Jan 02, 2015 7:24 am

I found that the volume varies as the temp increases and to correctly work out the volume by weight the water has to be at 4C for a correct starting volume (ie 1 litre = 1kg @ 4C)
So instead I worked out the volumes by using the formula for volumes ( can't type it properly here but is PixRxRxD)
This gave me a height of 10.5mm per litre and marked a metal rule accordingly
did not go to the trouble of calculating fixtures in the BM and assumed that the amount of water in the pump and pipework would be approximately the same as that displaced
by the elements and centre rod etc and the small curves in the corner of the base
I figure that's exact enough for me
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Model: 20 litres


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