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/*
* PT100RTD.h
*
* Created on: Apr 25, 2018
* Author: avi
*
* This library uses integer math to convert a Pt100 RTD resistance to a
* celsius temperature of two decimal point precision.
*
* It searches an ordered list of empirical resistances which correspond to
* temperatures ranging -200C to +850C, the complete span for which 100 ohm
* platinum RTDs are specified. It interpolates temperatures from intermediate
*/
#ifndef DRIVERS_HEATER_PT100RTD_H_
#define DRIVERS_HEATER_PT100RTD_H_
/*******************************************************************
* pt100rtd list of resistances v temperature
*
* DIN 43760 resistance values (ohms) were multiplied by 100 and
* converted to 16 bit unsigned integers with no loss of accuracy.
*
* Examples:
* 1852 represents 18.52 ohms and corresponds to a temperature of -200C.
* 10000 ==> 100.00 ohms @ 0C
* 13851 ==> 138.51 ohms @ 100C
*
* The list resides in flash since it's too large for SRAM or EEPROM
*******************************************************************/
//RTD Temperature vs. Resistance Table - For European Curve, Alpha = 0.00385, ITS-90 1� Celsius Increments
const static uint16_t Pt100_table[1051] = {
// The temperatue is the (index -200), Fit to temperature from -200 deg to 850 deg
1852, 1896, 1939, 1982, 2025, 2068, 2111, 2154, 2197, 2240,
2283, 2326, 2369, 2412, 2455, 2497, 2539, 2582, 2625, 2667,
2710, 2752, 2795, 2837, 2880, 2922, 2965, 3007, 3049, 3092,
3134, 3176, 3218, 3261, 3303, 3345, 3386, 3428, 3470, 3512,
3554, 3596, 3638, 3680, 3722, 3763, 3805, 3847, 3889, 3931,
3972, 4014, 4056, 4097, 4139, 4180, 4222, 4264, 4305, 4346,
4388, 4429, 4471, 4512, 4553, 4595, 4635, 4676, 4718, 4759,
4800, 4841, 4882, 4923, 4964, 5006, 5047, 5088, 5129, 5170,
5211, 5252, 5292, 5333, 5374, 5415, 5456, 5497, 5538, 5578,
5619, 5660, 5700, 5741, 5782, 5822, 5863, 5904, 5944, 5985,
6026, 6067, 6107, 6148, 6187, 6229, 6269, 6310, 6350, 6391,
6430, 6470, 6511, 6551, 6591, 6631, 6672, 6712, 6752, 6792,
6833, 6873, 6913, 6953, 6993, 7033, 7073, 7113, 7153, 7193,
7233, 7273, 7313, 7353, 7393, 7433, 7473, 7513, 7553, 7593,
7633, 7673, 7713, 7752, 7792, 7832, 7872, 7911, 7951, 7991,
8031, 8070, 8110, 8150, 8189, 8229, 8269, 8308, 8348, 8388,
8427, 8467, 8506, 8546, 8585, 8625, 8664, 8704, 8743, 8783,
8822, 8862, 8901, 8940, 8980, 9019, 9059, 9098, 9137, 9177,
9216, 9255, 9295, 9334, 9373, 9412, 9452, 9491, 9530, 9569,
9609, 9648, 9687, 9726, 9765, 9804, 9844, 9883, 9922, 9961,
10000,10039,10078,10117,10156,10195,10234,10273,10312,10351,
10390,10429,10468,10507,10546,10585,10624,10663,10702,10740,
10779,10818,10857,10896,10935,10973,11012,11051,11090,11128,
11167,11206,11245,11283,11322,11361,11399,11438,11477,11515,
11554,11593,11631,11670,11708,11747,11785,11824,11862,11901,
11940,11978,12016,12055,12093,12132,12170,12209,12247,12286,
12324,12362,12401,12439,12477,12517,12555,12593,12632,12670,
12708,12746,12785,12823,12861,12899,12938,12976,13014,13052,
13090,13128,13167,13205,13243,13281,13319,13357,13395,13433,
13471,13509,13547,13585,13623,13661,13699,13737,13775,13813,
13851,13889,13927,13965,14003,14039,14077,14115,14153,14191,
14229,14266,14304,14342,14380,14418,14456,14494,14532,14569,
14607,14645,14682,14720,14758,14795,14833,14871,14908,14946,
14983,15021,15058,15096,15134,15171,15209,15246,15284,15321,
15358,15395,15432,15471,15508,15546,15583,15621,15658,15696,
15733,15771,15808,15845,15883,15920,15956,15994,16031,16068,
16105,16143,16180,16217,16254,16291,16328,16366,16403,16440,
16477,16514,16551,16588,16625,16662,16700,16737,16774,16811,
16848,16885,16922,16959,16996,17033,17069,17106,17143,17180,
17217,17254,17291,17327,17364,17401,17439,17475,17512,17549,
17586,17623,17659,17696,17733,17770,17806,17843,17880,17916,
17953,17990,18026,18063,18099,18136,18173,18209,18246,18282,
18319,18355,18392,18428,18465,18501,18538,18574,18611,18647,
18684,18720,18756,18793,18829,18865,18902,18938,18974,19011,
19047,19083,19120,19156,19192,19228,19266,19302,19338,19374,
19410,19447,19483,19519,19555,19590,19626,19662,19698,19735,
19771,19807,19843,19879,19915,19951,19987,20023,20059,20095,
20131,20167,20203,20238,20274,20310,20346,20382,20418,20454,
20490,20525,20561,20597,20633,20670,20705,20741,20777,20813,
20848,20884,20920,20955,20991,21027,21062,21098,21134,21169,
21205,21240,21276,21312,21347,21383,21419,21455,21490,21526,
21561,21597,21632,21668,21703,21739,21773,21808,21844,21879,
21915,21950,21985,22021,22056,22091,22127,22162,22197,22232,
22268,22303,22338,22373,22409,22445,22480,22515,22550,22585,
22621,22656,22691,22726,22761,22796,22831,22866,22901,22936,
22972,23007,23042,23077,23112,23147,23181,23216,23251,23286,
23321,23356,23391,23426,23460,23495,23530,23565,23600,23635,
23670,23705,23740,23775,23809,23844,23879,23914,23948,23983,
24018,24052,24087,24122,24156,24191,24225,24260,24295,24329,
24364,24398,24433,24467,24502,24536,24571,24605,24640,24674,
24709,24743,24778,24812,24846,24881,24915,24950,24984,25018,
25053,25089,25121,25155,25190,25224,25259,25294,25328,25362,
25396,25430,25465,25499,25533,25567,25601,25635,25670,25704,
25738,25772,25806,25840,25874,25908,25942,25976,26010,26044,
26078,26112,26146,26180,26214,26248,26283,26317,26350,26384,
26418,26452,26486,26520,26554,26587,26621,26655,26689,26722,
26756,26790,26824,26857,26891,26925,26958,26992,27026,27059,
27093,27127,27160,27194,27227,27261,27295,27328,27362,27395,
27429,27462,27496,27529,27563,27596,27631,27664,27697,27731,
27764,27798,27831,27864,27898,27931,27964,27998,28031,28064,
28098,28131,28164,28197,28231,28264,28297,28330,28363,28397,
28430,28463,28496,28529,28562,28595,28630,28663,28696,28729,
28762,28795,28828,28861,28894,28927,28960,28993,29026,29059,
29092,29125,29158,29190,29223,29256,29290,29323,29356,29389,
29421,29454,29487,29520,29553,29585,29618,29651,29684,29716,
29749,29782,29814,29847,29880,29912,29945,29978,30010,30043,
30075,30108,30141,30173,30206,30238,30271,30303,30336,30368,
30401,30433,30466,30498,30530,30563,30595,30628,30660,30692,
30725,30757,30789,30822,30854,30886,30919,30951,30983,31015,
31048,31080,31112,31145,31178,31210,31243,31275,31307,31339,
31371,31404,31436,31468,31500,31532,31564,31596,31628,31660,
31692,31724,31756,31788,31820,31852,31885,31917,31949,31981,
32012,32044,32076,32108,32140,32172,32203,32234,32266,32298,
32330,32361,32393,32425,32457,32488,32521,32553,32585,32616,
32648,32679,32711,32743,32774,32806,32838,32869,32901,32932,
32964,32995,33027,33058,33090,33121,33153,33184,33216,33247,
33279,33310,33341,33373,33404,33436,33468,33499,33531,33562,
33593,33625,33656,33687,33718,33750,33781,33812,33843,33875,
33906,33937,33968,33999,34030,34062,34094,34125,34155,34187,
34218,34249,34280,34311,34342,34373,34404,34435,34466,34497,
34528,34559,34590,34621,34652,34683,34715,34746,34776,34807,
34838,34869,34900,34931,34961,34992,35023,35054,35085,35115,
35146,35177,35207,35238,35269,35299,35330,35361,35391,35422,
35453,35483,35514,35544,35575,35606,35637,35668,35698,35729,
35759,35790,35820,35851,35881,35912,35942,35972,36003,36033,
36064,36094,36124,36155,36185,36215,36246,36276,36306,36336,
36367,36397,36427,36457,36488,36518,36549,36579,36609,36640,
36670,36700,36730,36760,36790,36820,36850,36881,36911,36941,
36971,37001,37031,37061,37091,37121,37152,37182,37212,37241,
37271,37301,37331,37361,37391,37421,37451,37480,37510,37540,
37570,37600,37629,37659,37689,37719,37749,37779,37809,37839,
37868,37898,37928,37957,37987,38017,38046,38076,38105,38135,
38165,38194,38224,38253,38283,38312,38342,38371,38401,38430,
38460,38489,38518,38548,38577,38607,38637,38666,38696,38725,
38755,38784,38813,38842,38872,38901,38931,38961,38990,39019,
39048 // Pt100 resistance * 100 at 850C
};
const static uint16_t Pt100_short_table[15] = {
220 /*20*/,240 /*40*/,280 /*80*/,
310 /*110*/,240 /*130*/,280 /*145*/,
360 /*160*/,240 /*175*/,280 /*190*/,
405 /*205*/,420 /*220*/,440 /*240*/,
460 /*260*/,500 /*300*/,600 /*400*/,
// The temperatue is the (index -200), Fit to temperature from -200 deg to 850 deg
};
#endif /* DRIVERS_HEATER_PT100RTD_H_ */
|
