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This table is made for thermistor 3950 (can be found on ebay for cheap)

Browse source 
it's caracteristics are :

R25℃ ;100KΩ±1%

B Value(R25/50℃)：3990K 1%
Dissipation Factor(mW/℃)：1.1~1.6 In still Air
Thermal Time Constant(S)：10~17 In Still Air
Operating temperature range：  (-50~+260°C)
Dimension：  1.8mm Dia X4.1mm
Lead Length  ：30mm

This table was found on the following blogs:
http://cae2100.wordpress.com/2014/03/08/beta3950-thermistor-table-for-marlin/

and

http://microfabricator.com/articles/view/id/531ad7e59aad9d3131000000/beta-3950-thermistor-table-for-marlin
This commit is contained in:
Nutz95 2014-04-13 17:03:20 +02:00
parent 086ff1644f
commit 3161740df9
2 changed files with 127 additions and 72 deletions
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1
Marlin/Configuration.h
View file

@ -115,6 +115,7 @@
// 8 is 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup)
// 9 is 100k GE Sensing AL03006-58.2K-97-G1 (4.7k pullup)
// 10 is 100k RS thermistor 198-961 (4.7k pullup)
// 11 is 100k beta 3950 1% thermistor (4.7k pullup)
// 20 is the PT100 circuit found in the Ultimainboard V2.x
// 60 is 100k Maker's Tool Works Kapton Bed Thermistor beta=3950
//

54
Marlin/thermistortables.h
View file

@ -563,6 +563,60 @@ const short temptable_10[][2] PROGMEM = {
{1016*OVERSAMPLENR, 0}
};
#endif
#if (THERMISTORHEATER_0 == 11) || (THERMISTORHEATER_1 == 11) || (THERMISTORHEATER_2 == 11) || (THERMISTORBED == 11) // QU-BD silicone bed QWG-104F-3950 thermistor
const short temptable_8[][2] PROGMEM = {
{1*OVERSAMPLENR, 938},
{31*OVERSAMPLENR, 314},
{41*OVERSAMPLENR, 290},
{51*OVERSAMPLENR, 272},
{61*OVERSAMPLENR, 258},
{71*OVERSAMPLENR, 247},
{81*OVERSAMPLENR, 237},
{91*OVERSAMPLENR, 229},
{101*OVERSAMPLENR, 221},
{111*OVERSAMPLENR, 215},
{121*OVERSAMPLENR, 209},
{131*OVERSAMPLENR, 204},
{141*OVERSAMPLENR, 199},
{151*OVERSAMPLENR, 195},
{161*OVERSAMPLENR, 190},
{171*OVERSAMPLENR, 187},
{181*OVERSAMPLENR, 183},
{191*OVERSAMPLENR, 179},
{201*OVERSAMPLENR, 176},
{221*OVERSAMPLENR, 170},
{241*OVERSAMPLENR, 165},
{261*OVERSAMPLENR, 160},
{281*OVERSAMPLENR, 155},
{301*OVERSAMPLENR, 150},
{331*OVERSAMPLENR, 144},
{361*OVERSAMPLENR, 139},
{391*OVERSAMPLENR, 133},
{421*OVERSAMPLENR, 128},
{451*OVERSAMPLENR, 123},
{491*OVERSAMPLENR, 117},
{531*OVERSAMPLENR, 111},
{571*OVERSAMPLENR, 105},
{611*OVERSAMPLENR, 100},
{641*OVERSAMPLENR, 95},
{681*OVERSAMPLENR, 90},
{711*OVERSAMPLENR, 85},
{751*OVERSAMPLENR, 79},
{791*OVERSAMPLENR, 72},
{811*OVERSAMPLENR, 69},
{831*OVERSAMPLENR, 65},
{871*OVERSAMPLENR, 57},
{881*OVERSAMPLENR, 55},
{901*OVERSAMPLENR, 51},
{921*OVERSAMPLENR, 45},
{941*OVERSAMPLENR, 39},
{971*OVERSAMPLENR, 28},
{981*OVERSAMPLENR, 23},
{991*OVERSAMPLENR, 17},
{1001*OVERSAMPLENR, 9},
{1021*OVERSAMPLENR, -27}
};
#endif
#if (THERMISTORHEATER_0 == 20) || (THERMISTORHEATER_1 == 20) || (THERMISTORHEATER_2 == 20) || (THERMISTORBED == 20) // PT100 with INA826 amp on Ultimaker v2.0 electronics
/* The PT100 in the Ultimaker v2.0 electronics has a high sample value for a high temperature.