ldwilliams.uk Posted March 24 Share Posted March 24 A friend has very kindly calculated the offset and ratio for the Alphacool ES flow and temperature indicator "HighFlow" with RPM-Signal They are as follows - Ratio = 0.1709018653 Offset = 63.94619272 With the following results, not perfect but acceptable I feel - Rpm (given by Alphacool) l/h (given by Alphacool) Formula l/h % Error Exact formula 35 75 69.95 -6.73% 69.92775801 80 80 77.6 -3.00% 77.61834195 100 85 81 -4.71% 81.03637925 127 90 85.59 -4.90% 85.65072962 156 95 90.52 -4.72% 90.60688371 188 100 95.96 -4.04% 96.0757434 215 105 100.55 -4.24% 100.6900938 255 110 107.35 -2.41% 107.5261684 290 115 113.3 -1.48% 113.5077337 320 120 118.4 -1.33% 118.6347896 350 125 123.5 -1.20% 123.7618456 380 130 128.6 -1.08% 128.8889015 420 135 135.4 0.30% 135.7249762 485 140 146.45 4.61% 146.8335974 515 145 151.55 4.52% 151.9606534 560 150 159.2 6.13% 159.6512373 580 155 162.6 4.90% 163.0692746 605 160 166.85 4.28% 167.3418212 630 165 171.1 3.70% 171.6143679 660 170 176.2 3.65% 176.7414238 675 175 178.75 2.14% 179.3049518 695 180 182.15 1.19% 182.7229891 720 185 186.4 0.76% 186.9955358 745 190 190.65 0.34% 191.2680824 775 195 195.75 0.38% 196.3951383 810 200 201.7 0.85% 202.3767036 840 205 206.8 0.88% 207.5037596 860 210 210.2 0.10% 210.9217969 885 215 214.45 -0.26% 215.1943435 915 220 219.55 -0.20% 220.3213995 940 225 223.8 -0.53% 224.5939461 955 230 226.35 -1.59% 227.1574741 975 235 229.75 -2.23% 230.5755114 1005 240 234.85 -2.15% 235.7025674 1035 245 239.95 -2.06% 240.8296233 1075 250 246.75 -1.30% 247.6656979 1100 255 251 -1.57% 251.9382446 1130 260 256.1 -1.50% 257.0653005 1160 265 261.2 -1.43% 262.1923565 1190 270 266.3 -1.37% 267.3194125 1220 275 271.4 -1.31% 272.4464684 1260 280 278.2 -0.64% 279.282543 1290 285 283.3 -0.60% 284.409599 1320 290 288.4 -0.55% 289.5366549 1350 295 293.5 -0.51% 294.6637109 1380 300 298.6 -0.47% 299.7907669 1410 305 303.7 -0.43% 304.9178228 1440 310 308.8 -0.39% 310.0448788 Quote Link to comment Share on other sites More sharing options...
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