MANUAL DE INSTRUCCIONES CODIGO 80191 REV D ENE/2020 (Sujetas a modificaciones sin previo aviso) Pag.: 34
J
.P. SELECTA s.a.u.
Ctra. NII Km 585.1 Abrera 08630 (Barcelona) España
Tel 34 937 700 877 Fax 34 937 702 362
e-mail: [email protected] - website: http://www.jpselecta.es
Measuring with the alcoholometer
Previously to start this operation, all material that will be used (flask, cylinder, alco-
holometers,...) must be stored at 20±0.5ºC for 4 h.
• Put distilled into 250ml cylinder.
• Place the alcoholometer (with a little spin movement).
• Wait 1 minute. Read %Vol from the bottom part of the mechanism.
• Repeat the reading of %Vol, 3 times at least and average. Write the result by
using 2 decimals figures. Round last figure at 0 or 5.
Notes:
• If it is necessary, use a magnifier to read better the alcoholometer.
• To assure that the liquid temperature do not change during %Vol measurement,
the room temperature must be 20 ± 3ºC.
• If the material used has not been stored at 20ºC, measure the temperature for
1 minute before introducing the alcoholometer. The measured temperature must be
round. (Example: 20.4ºC will be round at as 20ºC; 20.6ºC as 21ºC) and then modify
the %Vol according to table 1.
(This will produce a leak of accuracy on the result)
Table 1.: Alcohol degree correction according to temperature.
Alcoholic strength by volume,% vol.
8
9
10
11
12
13
14
15
16
17
18
19
20
14ºC
+0.85 +0.91 +0.97 +1.04 +1.12 +1.20 +1.29 +1.39 +1.49 +1.58 +1.68 +1.78 +1.88
15ºC
+0.73 +0.77 +0.83 +1.89 +0.95 +1.02 +1.09 +1.16 +1.24 +1.32 +1.40 +1.48 +1.56
16ºC
+0.60 +0.63 +0.67 +0.72 +0.77 +0.82 +0.88 +0.94 +1.00 +1.06 +1.12 +1.19 +1.25
17ºC
+0.46 +0.48 +0.51 +0.55 +0.59 +0.62 +0.67 +0.71 +0.75 +0.80 +0.84 +0.89 +0.94
18ºC
+0.31 +0.33 +0.35 +0.37 +0.40 +0.42 +0.45 +0.48 +0.51 +0.53 +0.56 +0.59 +0.62
19ºC
+0.16 +0.17 +0.18 +0.19 +0.20 +0.21 +0.23 +0.24 +0.25 +0.27 +0.28 +0.30 +0.31
20ºC
+0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
21ºC
-0.17
-0.18
-0.19
-0.19
-0.20
-0.22
-0.23
-0.25
-0.26
-0.28
-0.29
-0.30
-0.31
22ºC
-0.34
-0.36
-0.37
-0.39
-0.41
-0.44
-0.47
-0.49
-0.52
-0.55
-0.57
-0.60
-0.62
23ºC
-0.51
-0.54
-0.57
-0.60
-0.63
-0.66
-0.70
-0.74
-0.78
-0.82
-0.86
-0.90
-0.93
24ºC
-0.70
-0.73
-0.77
-0.81
-0.85
-0.89
-0.94
-0.99
-1.04
-1.10
-1.15
-1.20
-1.25
25ºC
-0.89
-0.93
-0.97
-1.02
-1.07
-1.13
-1.19
-1.25
-1.31
-1.37
-1.43
-1.49
-1.56
26ºC
-1.08
-1.13
-1.18
-1.24
-1.30
-1.36
-1.43
-1.50
-1.57
-1.65
-1.73
1.80
-1.87
