comparison: www/js/global.js
www/js/global.js
- changeset 721
- 4d7394ced1c3
- parent 717
- aad750d942df
- child 724
- 66e0b4ef9268
equal
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| 720:b6a616372a26 | 721:4d7394ced1c3 |
|---|---|
| 1082 return sg_to_plato(sg) * my_brix_correction; | 1082 return sg_to_plato(sg) * my_brix_correction; |
| 1083 } | 1083 } |
| 1084 | 1084 |
| 1085 | 1085 |
| 1086 | 1086 |
| 1087 function brix_to_fg(OBrix, FBrix) { | 1087 function brix_to_fg(OPt, FBrix) { |
| 1088 // Brouwhulp, werkt zonder brix_correctie, waarom? | 1088 // OPt = Original Plato |
| 1089 var FGbh = Round(1.0031 - 0.002318474 * OBrix - 0.000007775 * (OBrix * OBrix) - 0.000000034 * Math.pow(OBrix, 3) + | 1089 // FBrix = Refractometer reading. |
| 1090 // Brouwhulp | |
| 1091 var FGbh = Round(1.0031 - 0.002318474 * OPt - 0.000007775 * (OPt * OPt) - 0.000000034 * Math.pow(OPt, 3) + | |
| 1090 0.00574 * (FBrix) + 0.00003344 * (FBrix * FBrix) + 0.000000086 * Math.pow(FBrix, 3), 4); | 1092 0.00574 * (FBrix) + 0.00003344 * (FBrix * FBrix) + 0.000000086 * Math.pow(FBrix, 3), 4); |
| 1091 | 1093 |
| 1092 // from http://seanterrill.com FGoc = old cubic, FGnc = new cubic, FGnl = new linear | 1094 // from http://seanterrill.com FGnc = new cubic |
| 1093 var OBc = OBrix / my_brix_correction; | |
| 1094 var FBc = FBrix / my_brix_correction; | 1095 var FBc = FBrix / my_brix_correction; |
| 1095 | 1096 //console.log('Correction ' + my_brix_correction + ' OPt ' + OPt + ' FBrix ' + FBrix + ' FBc ' + FBc); |
| 1096 // Old Cubic, almost the same a BrouwHulp, different offset and with brix_correction. | 1097 |
| 1097 var FGoc = Round(1.001843 - 0.002318474 * OBc - 0.000007775 * (OBc * OBc) - 0.000000034 * Math.pow(OBc, 3) + | 1098 // New cubic by Sean Terrill. |
| 1098 0.00574 * (FBc) + 0.00003344 * (FBc * FBc) + 0.000000086 * Math.pow(FBc, 3), 4); | 1099 var FGnc = Round(1 - 0.0044993 * (OPt) + 0.0117741 * (FBc) + |
| 1099 | 1100 0.000275806 * (OPt * OPt) - 0.00127169 * (FBc * FBc) - |
| 1100 // New cubic. This looks the best to use. | 1101 0.00000727999 * Math.pow(OPt, 3) + 0.0000632929 * Math.pow(FBc, 3), 4); |
| 1101 var FGnc = Round(1 - 0.0044993 * (OBc) + 0.0117741 * (FBc) + | |
| 1102 0.000275806 * (OBc * OBc) - 0.00127169 * (FBc * FBc) - | |
| 1103 0.00000727999 * Math.pow(OBc, 3) + 0.0000632929 * Math.pow(FBc, 3), 4); | |
| 1104 | |
| 1105 // New linear, results are pretty much too high and way off for heavy beers. | |
| 1106 var FGnl = Round(1 - 0.000856829 * OBc + 0.00349412 * FBc, 4); | |
| 1107 | 1102 |
| 1108 // Petr Novotny, Zymurgy July/August 2017. Used by Brewers Friend. | 1103 // Petr Novotny, Zymurgy July/August 2017. Used by Brewers Friend. |
| 1109 var FGbf = Round(1 + 0.006276 * FBc - 0.002349 * OBc, 4); | 1104 var FGbf = Round(1 + 0.006276 * FBc - 0.002349 * OPt, 4); |
| 1110 | 1105 |
| 1111 console.log('brix_to_fg(' + Round(OBrix, 2) + ', ' + FBrix + ') FGbh:' + FGbh + ' FGoc:' + FGoc + ' FGnc:' + FGnc + ' FGnl:' + FGnl + ' FGbf:' + FGbf); | 1106 // The real battle is now between Brouwhulp and Petr Novotny. |
| 1112 return FGnc; | 1107 console.log('brix_to_fg(' + Round(OPt, 2) + ', ' + FBrix + ') FGbh:' + FGbh + ' FGnc:' + FGnc + ' FGbf:' + FGbf); |
| 1108 return FGbf; | |
| 1113 } | 1109 } |
| 1114 | 1110 |
| 1115 | 1111 |
| 1116 | 1112 |
| 1117 function estimate_sg(sugars, batch_size) { | 1113 function estimate_sg(sugars, batch_size) { |
