Defi Temperature Sensor Linearisation

[David_Wallis]

Has anyone got a linearisation curve for a sensor looking like the defi sensors I can 'borrow' to try.

looks something like this

Thanks

David

[C. Ludwig]

Do a google search. I needed the same info several months ago and found someone that had done a calibration on them. May have been the Motec board where I found it. Unfortunately, I didn't bookmark the page or I'd direct you there. When I did the search it was one of the first pages listed.

[David_Wallis]

Thanks,

I believe it may be this thread?
http://bbs.22b.com/forums/showthread.ph ... efi+sensor
Daft think is I've been a member on there years!

If anyone wants to try then you can try this.. (I haven't tested it as yet)

Code: Select all

SENSOR("Defi - Test")
{
  UNIT(TEMPERATURE,DEGC)
  HINT_TYPE(EXTRAPOLATED)
  HINT_POINTS(31, {0.941944,175.001144}, {1.004491,170.001221}, {1.075438,165.001297}, {1.156467,160.001373}, {1.235433,155.001450}, {1.328986,150.001526}, {1.434987,145.001602}, {1.541981,140.001678}, {1.656994,135.001755}, {1.774985,130.001831}, {1.920469,125.001907}, {2.057477,120.001984}, {2.202426,115.002060}, {2.341954,110.002136}, {2.508974,105.002213}, {2.659499,100.002289}, {2.810482,95.002365}, {2.962458,90.002441}, {3.118939,85.002518}, {3.278476,80.002594}, {3.428924,75.002670}, {3.582962,70.002747}, {3.725926,65.002823}, {3.857969,60.002899}, {3.985965,55.002976}, {4.104491,50.003052}, {4.211943,45.003128}, {4.311453,40.003204}, {4.401951,35.003281}, {4.480993,30.003357}, {4.547970,25.003433})
  LINEARISATION(65, {250.000000, 244.000000, 237.800000, 231.500000, 225.300000, 219.000000, 212.800000, 206.500000, 200.300000, 194.000000, 187.800000, 181.500000, 175.300000, 169.000000, 163.800000, 159.000000, 154.000000, 150.000000, 146.300000, 142.600000, 139.000000, 135.600000, 132.300000, 129.000000, 126.500000, 123.700000, 120.900000, 118.100000, 115.400000, 112.700000, 109.900000, 107.500000, 105.200000, 102.600000, 100.000000, 97.400000, 94.800000, 92.300000, 89.700000, 87.200000, 84.700000, 82.300000, 79.800000, 77.200000, 74.600000, 72.100000, 69.500000, 66.800000, 64.000000, 61.000000, 58.000000, 54.900000, 51.600000, 48.300000, 44.500000, 40.500000, 36.300000, 31.900000, 26.500000, 20.100000, 14.200000, 8.400000, 2.600000, -3.300000, -9.100000})
}