SensoresTemperatura-5
17
TERMISTORES TERMISTORES Características y aplicaciones
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Transcript of SensoresTemperatura-5
-
TERMISTORES
Caractersticas y aplicaciones
-
DEFINICIN El termistor es un tipo de transductor pasivo, sensible a la temperatura y que experimenta un gran cambio en la resistencia elctrica cuando est sujeto a pequeos cambios de temperatura.El trmino termistor proviene del ingls THERMally sensitive resISTOR, es decir, resistencia sensible trmicamente.Aunque el termistor no sea tan conocido como otros dispositivos semiconductores, tiene mltiples aplicaciones en campos tan diversos como instrumentacin,astronatica,automviles,medicina...
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CONCEPTOS PREVIOS La corriente que circula por cualquier conductor est afectada en algn modo por la temperatura.Para una misma tensin y el mismo material, la intensidad que hay en el conductor vara en funcin de la temperatura.
Rt2 = Rt1 [ 1 + ( t 2 - t1 ) ]
Donde: t 2 : Valor superior de la temperatura en C t 1 : Valor inferior de la temperatura en C : Coeficiente de temperatura del material
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TIPOS DE TERMISTORESPTC : Coeficiente de temperatura positivo. Sufren un cambio de resistencia brusco al alcanzar cierta temperatura (unos 100C) pasando de valores de centenares de ohm. a decenas de Megaohm.
NTC: Coeficiente de temperatura negativo. Altamente sensibles a cambios de temperatura (valores de alfa entre -2%/K y -6%/K). Dentro de este grupo se encuentra la mayora de termistores.
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TIPOS DE TERMISTORES
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CARACTERSTICAS BSICASRango de temperaturas y valores de resistenciaSe emplean fundamentalmente entre los -50C y los 150C no obstante las unidades encapsuladas pueden alcanzar los 300C. En la mayora de aplicaciones el valor de resistencia a 25C est entre 100ohm. Y 100kohm. Aunque se pueden producir con resistencias tan bajas como 10ohm. o tan altas como 40Mohm.Tamao reducidoLas reducidas dimensiones de los termistores hacen que la respuesta a los cambios de temperatura sean muy rpidas.Sensibilidad a los cambios de temperaturaLos termistores tienen mayor sensibilidad a los cambios de temperatura que otros transductores.
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CARACTERSTICAS BSICASAutocalentamiento La temperatura de un termistor puede variar bien por cambios de la temperatura ambiente en que se encuentra el dispositivo, o por el autocalentamiento que se produce cuando se hace pasar una corriente elctrica a travs de l. El autocaldeo puede ser indeseable en algunas aplicaciones, otras en cambio, basan su funcionamiento en este efecto.IntercambiabilidadTolerancia con la que es producido un termistor. Gracias a esta cualidad es posible reemplazar en un sistema un termistor por otro sin necesidad de volver a calibrar el aparato de medida.Sensibilidad a la temperatura de forma remota La medicin de temperatura se puede efectuar desde un punto distante
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ESPECIFICACIONES ELCTRICAS Resistencia / TemperaturaLa relacin R/T del termistor no es en absoluto lineal y existen varias aproximaciones que dependen del parmetros del proceso:
Steinhart-Hart : 1/T = a +b +(lnR) + c(lnR) 3 RT = RN e B. (1/T 1/TN)
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ESPECIFICACIONES ELCTRICAS Resistencia / Temperatura
Grfico1
16600003558000
15180003296000
13900003055000
12730002833000
11670002629000
10710002440000
9828002266000
9027002106000
8297001957000
7631001821000
7023001694000
6467001577000
5959001469000
5494001369000
5069001276000
4679001190000
4322001111000
3995001037000
369400968400
341800904900
316500845900
293200791100
271700740200
252000692800
233800648800
217100607800
201700569600
187400534100
174300501000
162200470100
151000441300
140600414500
131000389400
122100366000
113900344100
106300323700
99260304600
92720286700
86650270000
81020254400
75790239800
70930226000
66410213200
62210201100
58300189800
54660179200
51270169300
48110160000
45170151200
42420143000
39860135200
37470127900
35240121100
33150114600
31200108600
29380102900
2767097490
2607092430
2458087660
2318083160
2187078910
2064074910
1948071130
1840067570
1739064200
1643061020
1554058010
1470055170
1391052480
1316049940
1246047540
1181045270
1119043110
1060041070
1005039140
953437310
904635570
858633930
815132370
774130890
735529490
698928150
664426890
631925690
601124550
571923460
544422430
518321450
493720520
470319630
448218790
427317980
407417220
388616490
370815790
353915130
337814500
322613900
308113330
294412790
281412260
269011770
257211290
246010840
235410410
225210000
21569605
20649227
19778867
18948523
18158194
17397880
16677579
15997291
15337016
14716752
14126500
13556258
13016026
12495805
12005592
11525389
11075193
10645006
10234827
983.84655
946.24489
910.24331
875.84179
842.84033
811.33893
781.13758
752.23629
724.53504
697.93385
672.53270
648.13160
624.83054
602.42952
580.92854
560.32760
540.52669
521.52582
503.32497
485.82417
4692339
452.92264
437.42191
422.52122
408.22055
394.51990
381.21928
368.51868
356.21810
344.51754
333.11700
322.31648
311.81598
301.71549
2921503
282.71458
273.71414
2651372
256.71332
248.61293
240.91255
233.41218
226.21183
219.31149
212.61116
206.11084
199.91053
193.91023
188.1994.2
182.5966.3
177.1939.3
171.9913.2
166.9887.9
162863.4
157839.7
152.8816.8
148.4794.6
144.2773.1
140.1752.3
136.1732.1
132.3712.6
128.6693.6
125675.3
121.6657.5
118.2640.3
115623.5
111.8607.3
108.8591.6
105.8576.4
103561.6
100.2547.3
97.6533.4
95519.9
92.5506.8
90494.1
87.7481.8
85.4469.8
83.2458.2
71.1446.9
79435.9
77425.3
75414.9
73.1404.9
71.3395.1
69.5385.6
67.8376.4
66.1367.4
64.4358.7
62.9350.3
61.3342
59.8334
58.4326.3
57318.7
55.6311.3
54.3304.2
53297.2
51.7290.4
50.5283.8
49.3277.4
48.2271.2
47265.1
45.9259.2
44.9253.4
43.8247.8
42.8242.3
41.9237
44004/44003
44006/44031
Temperatura (C)
Resistencia (Ohm.)
Resistencia vs. Temperatura
Hoja1
TEMP. C44004/4400344006/44031
-801660000.03558000.0
-791518000.03296000.0
-781390000.03055000.0
-771273000.02833000.0
-761167000.02629000.0
-751071000.02440000.0
-74982800.02266000.0
-73902700.02106000.0
-72829700.01957000.0
-71763100.01821000.0
-70702300.01694000.0
-69646700.01577000.0
-68595900.01469000.0
-67549400.01369000.0
-66506900.01276000.0
-65467900.01190000.0
-64432200.01111000.0
-63399500.01037000.0
-62369400.0968400.0
-61341800.0904900.0
-60316500.0845900.0
-59293200.0791100.0
-58271700.0740200.0
-57252000.0692800.0
-56233800.0648800.0
-55217100.0607800.0
-54201700.0569600.0
-53187400.0534100.0
-52174300.0501000.0
-51162200.0470100.0
-50151000.0441300.0
-49140600.0414500.0
-48131000.0389400.0
-47122100.0366000.0
-46113900.0344100.0
-45106300.0323700.0
-4499260.0304600.0
-4392720.0286700.0
-4286650.0270000.0
-4181020.0254400.0
-4075790.0239800.0
-3970930.0226000.0
-3866410.0213200.0
-3762210.0201100.0
-3658300.0189800.0
-3554660.0179200.0
-3451270.0169300.0
-3348110.0160000.0
-3245170.0151200.0
-3142420.0143000.0
-3039860.0135200.0
-2937470.0127900.0
-2835240.0121100.0
-2733150.0114600.0
-2631200.0108600.0
-2529380.0102900.0
-2427670.097490.0
-2326070.092430.0
-2224580.087660.0
-2123180.083160.0
-2021870.078910.0
-1920640.074910.0
-1819480.071130.0
-1718400.067570.0
-1617390.064200.0
-1516430.061020.0
-1415540.058010.0
-1314700.055170.0
-1213910.052480.0
-1113160.049940.0
-1012460.047540.0
-911810.045270.0
-811190.043110.0
-710600.041070.0
-610050.039140.0
-59534.037310.0
-49046.035570.0
-38586.033930.0
-28151.032370.0
-17741.030890.0
07355.029490.0
16989.028150.0
26644.026890.0
36319.025690.0
46011.024550.0
55719.023460.0
65444.022430.0
75183.021450.0
84937.020520.0
94703.019630.0
104482.018790.0
114273.017980.0
124074.017220.0
133886.016490.0
143708.015790.0
153539.015130.0
163378.014500.0
173226.013900.0
183081.013330.0
192944.012790.0
202814.012260.0
212690.011770.0
222572.011290.0
232460.010840.0
242354.010410.0
252252.010000.0
262156.09605.0
272064.09227.0
281977.08867.0
291894.08523.0
301815.08194.0
311739.07880.0
321667.07579.0
331599.07291.0
341533.07016.0
351471.06752.0
361412.06500.0
371355.06258.0
381301.06026.0
391249.05805.0
401200.05592.0
411152.05389.0
421107.05193.0
431064.05006.0
441023.04827.0
45983.84655.0
46946.24489.0
47910.24331.0
48875.84179.0
49842.84033.0
50811.33893.0
51781.13758.0
52752.23629.0
53724.53504.0
54697.93385.0
55672.53270.0
56648.13160.0
57624.83054.0
58602.42952.0
59580.92854.0
60560.32760.0
61540.52669.0
62521.52582.0
63503.32497.0
64485.82417.0
65469.02339.0
66452.92264.0
67437.42191.0
68422.52122.0
69408.22055.0
70394.51990.0
71381.21928.0
72368.51868.0
73356.21810.0
74344.51754.0
75333.11700.0
76322.31648.0
77311.81598.0
78301.71549.0
79292.01503.0
80282.71458.0
81273.71414.0
82265.01372.0
83256.71332.0
84248.61293.0
85240.91255.0
86233.41218.0
87226.21183.0
88219.31149.0
89212.61116.0
90206.11084.0
91199.91053.0
92193.91023.0
93188.1994.2
94182.5966.3
95177.1939.3
96171.9913.2
97166.9887.9
98162.0863.4
99157.0839.7
100152.8816.8
101148.4794.6
102144.2773.1
103140.1752.3
104136.1732.1
105132.3712.6
106128.6693.6
107125.0675.3
108121.6657.5
109118.2640.3
110115.0623.5
111111.8607.3
112108.8591.6
113105.8576.4
114103.0561.6
115100.2547.3
11697.6533.4
11795.0519.9
11892.5506.8
11990.0494.1
12087.7481.8
12185.4469.8
12283.2458.2
12371.1446.9
12479.0435.9
12577.0425.3
12675.0414.9
12773.1404.9
12871.3395.1
12969.5385.6
13067.8376.4
13166.1367.4
13264.4358.7
13362.9350.3
13461.3342.0
13559.8334.0
13658.4326.3
13757.0318.7
13855.6311.3
13954.3304.2
14053.0297.2
14151.7290.4
14250.5283.8
14349.3277.4
14448.2271.2
14547.0265.1
14645.9259.2
14744.9253.4
14843.8247.8
14942.8242.3
15041.9237.0
Hoja2
Hoja2
16600003558000
15180003296000
13900003055000
12730002833000
11670002629000
10710002440000
9828002266000
9027002106000
8297001957000
7631001821000
7023001694000
6467001577000
5959001469000
5494001369000
5069001276000
4679001190000
4322001111000
3995001037000
369400968400
341800904900
316500845900
293200791100
271700740200
252000692800
233800648800
217100607800
201700569600
187400534100
174300501000
162200470100
151000441300
140600414500
131000389400
122100366000
113900344100
106300323700
99260304600
92720286700
86650270000
81020254400
75790239800
70930226000
66410213200
62210201100
58300189800
54660179200
51270169300
48110160000
45170151200
42420143000
39860135200
37470127900
35240121100
33150114600
31200108600
29380102900
2767097490
2607092430
2458087660
2318083160
2187078910
2064074910
1948071130
1840067570
1739064200
1643061020
1554058010
1470055170
1391052480
1316049940
1246047540
1181045270
1119043110
1060041070
1005039140
953437310
904635570
858633930
815132370
774130890
735529490
698928150
664426890
631925690
601124550
571923460
544422430
518321450
493720520
470319630
448218790
427317980
407417220
388616490
370815790
353915130
337814500
322613900
308113330
294412790
281412260
269011770
257211290
246010840
235410410
225210000
21569605
20649227
19778867
18948523
18158194
17397880
16677579
15997291
15337016
14716752
14126500
13556258
13016026
12495805
12005592
11525389
11075193
10645006
10234827
983.84655
946.24489
910.24331
875.84179
842.84033
811.33893
781.13758
752.23629
724.53504
697.93385
672.53270
648.13160
624.83054
602.42952
580.92854
560.32760
540.52669
521.52582
503.32497
485.82417
4692339
452.92264
437.42191
422.52122
408.22055
394.51990
381.21928
368.51868
356.21810
344.51754
333.11700
322.31648
311.81598
301.71549
2921503
282.71458
273.71414
2651372
256.71332
248.61293
240.91255
233.41218
226.21183
219.31149
212.61116
206.11084
199.91053
193.91023
188.1994.2
182.5966.3
177.1939.3
171.9913.2
166.9887.9
162863.4
157839.7
152.8816.8
148.4794.6
144.2773.1
140.1752.3
136.1732.1
132.3712.6
128.6693.6
125675.3
121.6657.5
118.2640.3
115623.5
111.8607.3
108.8591.6
105.8576.4
103561.6
100.2547.3
97.6533.4
95519.9
92.5506.8
90494.1
87.7481.8
85.4469.8
83.2458.2
71.1446.9
79435.9
77425.3
75414.9
73.1404.9
71.3395.1
69.5385.6
67.8376.4
66.1367.4
64.4358.7
62.9350.3
61.3342
59.8334
58.4326.3
57318.7
55.6311.3
54.3304.2
53297.2
51.7290.4
50.5283.8
49.3277.4
48.2271.2
47265.1
45.9259.2
44.9253.4
43.8247.8
42.8242.3
41.9237
44004/44003
44006/44031
Temperatura (C)
Resistencia (Ohm.)
Resistencia vs. Temperatura
Hoja3
Hoja3
16600003558000
15180003296000
13900003055000
12730002833000
11670002629000
10710002440000
9828002266000
9027002106000
8297001957000
7631001821000
7023001694000
6467001577000
5959001469000
5494001369000
5069001276000
4679001190000
4322001111000
3995001037000
369400968400
341800904900
316500845900
293200791100
271700740200
252000692800
233800648800
217100607800
201700569600
187400534100
174300501000
162200470100
151000441300
140600414500
131000389400
122100366000
113900344100
106300323700
99260304600
92720286700
86650270000
81020254400
75790239800
70930226000
66410213200
62210201100
58300189800
54660179200
51270169300
48110160000
45170151200
42420143000
39860135200
37470127900
35240121100
33150114600
31200108600
29380102900
2767097490
2607092430
2458087660
2318083160
2187078910
2064074910
1948071130
1840067570
1739064200
1643061020
1554058010
1470055170
1391052480
1316049940
1246047540
1181045270
1119043110
1060041070
1005039140
953437310
904635570
858633930
815132370
774130890
735529490
698928150
664426890
631925690
601124550
571923460
544422430
518321450
493720520
470319630
448218790
427317980
407417220
388616490
370815790
353915130
337814500
322613900
308113330
294412790
281412260
269011770
257211290
246010840
235410410
225210000
21569605
20649227
19778867
18948523
18158194
17397880
16677579
15997291
15337016
14716752
14126500
13556258
13016026
12495805
12005592
11525389
11075193
10645006
10234827
983.84655
946.24489
910.24331
875.84179
842.84033
811.33893
781.13758
752.23629
724.53504
697.93385
672.53270
648.13160
624.83054
602.42952
580.92854
560.32760
540.52669
521.52582
503.32497
485.82417
4692339
452.92264
437.42191
422.52122
408.22055
394.51990
381.21928
368.51868
356.21810
344.51754
333.11700
322.31648
311.81598
301.71549
2921503
282.71458
273.71414
2651372
256.71332
248.61293
240.91255
233.41218
226.21183
219.31149
212.61116
206.11084
199.91053
193.91023
188.1994.2
182.5966.3
177.1939.3
171.9913.2
166.9887.9
162863.4
157839.7
152.8816.8
148.4794.6
144.2773.1
140.1752.3
136.1732.1
132.3712.6
128.6693.6
125675.3
121.6657.5
118.2640.3
115623.5
111.8607.3
108.8591.6
105.8576.4
103561.6
100.2547.3
97.6533.4
95519.9
92.5506.8
90494.1
87.7481.8
85.4469.8
83.2458.2
71.1446.9
79435.9
77425.3
75414.9
73.1404.9
71.3395.1
69.5385.6
67.8376.4
66.1367.4
64.4358.7
62.9350.3
61.3342
59.8334
58.4326.3
57318.7
55.6311.3
54.3304.2
53297.2
51.7290.4
50.5283.8
49.3277.4
48.2271.2
47265.1
45.9259.2
44.9253.4
43.8247.8
42.8242.3
41.9237
44004/44003
44006/44031
Temperatura (C)
Resistencia (Ohm.)
Resistencia vs. Temperatura
Grfico2
16600003558000
15180003296000
13900003055000
12730002833000
11670002629000
10710002440000
9828002266000
9027002106000
8297001957000
7631001821000
7023001694000
6467001577000
5959001469000
5494001369000
5069001276000
4679001190000
4322001111000
3995001037000
369400968400
341800904900
316500845900
293200791100
271700740200
252000692800
233800648800
217100607800
201700569600
187400534100
174300501000
162200470100
151000441300
140600414500
131000389400
122100366000
113900344100
106300323700
99260304600
92720286700
86650270000
81020254400
75790239800
70930226000
66410213200
62210201100
58300189800
54660179200
51270169300
48110160000
45170151200
42420143000
39860135200
37470127900
35240121100
33150114600
31200108600
29380102900
2767097490
2607092430
2458087660
2318083160
2187078910
2064074910
1948071130
1840067570
1739064200
1643061020
1554058010
1470055170
1391052480
1316049940
1246047540
1181045270
1119043110
1060041070
1005039140
953437310
904635570
858633930
815132370
774130890
735529490
698928150
664426890
631925690
601124550
571923460
544422430
518321450
493720520
470319630
448218790
427317980
407417220
388616490
370815790
353915130
337814500
322613900
308113330
294412790
281412260
269011770
257211290
246010840
235410410
225210000
21569605
20649227
19778867
18948523
18158194
17397880
16677579
15997291
15337016
14716752
14126500
13556258
13016026
12495805
12005592
11525389
11075193
10645006
10234827
983.84655
946.24489
910.24331
875.84179
842.84033
811.33893
781.13758
752.23629
724.53504
697.93385
672.53270
648.13160
624.83054
602.42952
580.92854
560.32760
540.52669
521.52582
503.32497
485.82417
4692339
452.92264
437.42191
422.52122
408.22055
394.51990
381.21928
368.51868
356.21810
344.51754
333.11700
322.31648
311.81598
301.71549
2921503
282.71458
273.71414
2651372
256.71332
248.61293
240.91255
233.41218
226.21183
219.31149
212.61116
206.11084
199.91053
193.91023
188.1994.2
182.5966.3
177.1939.3
171.9913.2
166.9887.9
162863.4
157839.7
152.8816.8
148.4794.6
144.2773.1
140.1752.3
136.1732.1
132.3712.6
128.6693.6
125675.3
121.6657.5
118.2640.3
115623.5
111.8607.3
108.8591.6
105.8576.4
103561.6
100.2547.3
97.6533.4
95519.9
92.5506.8
90494.1
87.7481.8
85.4469.8
83.2458.2
71.1446.9
79435.9
77425.3
75414.9
73.1404.9
71.3395.1
69.5385.6
67.8376.4
66.1367.4
64.4358.7
62.9350.3
61.3342
59.8334
58.4326.3
57318.7
55.6311.3
54.3304.2
53297.2
51.7290.4
50.5283.8
49.3277.4
48.2271.2
47265.1
45.9259.2
44.9253.4
43.8247.8
42.8242.3
41.9237
44004/44003
44006/44031
Temperatura (C)
Resistencia (Ohm.)
Resistencia vs. Temperatura
Hoja1
TEMP. C44004/4400344006/44031
-801660000.03558000.0
-791518000.03296000.0
-781390000.03055000.0
-771273000.02833000.0
-761167000.02629000.0
-751071000.02440000.0
-74982800.02266000.0
-73902700.02106000.0
-72829700.01957000.0
-71763100.01821000.0
-70702300.01694000.0
-69646700.01577000.0
-68595900.01469000.0
-67549400.01369000.0
-66506900.01276000.0
-65467900.01190000.0
-64432200.01111000.0
-63399500.01037000.0
-62369400.0968400.0
-61341800.0904900.0
-60316500.0845900.0
-59293200.0791100.0
-58271700.0740200.0
-57252000.0692800.0
-56233800.0648800.0
-55217100.0607800.0
-54201700.0569600.0
-53187400.0534100.0
-52174300.0501000.0
-51162200.0470100.0
-50151000.0441300.0
-49140600.0414500.0
-48131000.0389400.0
-47122100.0366000.0
-46113900.0344100.0
-45106300.0323700.0
-4499260.0304600.0
-4392720.0286700.0
-4286650.0270000.0
-4181020.0254400.0
-4075790.0239800.0
-3970930.0226000.0
-3866410.0213200.0
-3762210.0201100.0
-3658300.0189800.0
-3554660.0179200.0
-3451270.0169300.0
-3348110.0160000.0
-3245170.0151200.0
-3142420.0143000.0
-3039860.0135200.0
-2937470.0127900.0
-2835240.0121100.0
-2733150.0114600.0
-2631200.0108600.0
-2529380.0102900.0
-2427670.097490.0
-2326070.092430.0
-2224580.087660.0
-2123180.083160.0
-2021870.078910.0
-1920640.074910.0
-1819480.071130.0
-1718400.067570.0
-1617390.064200.0
-1516430.061020.0
-1415540.058010.0
-1314700.055170.0
-1213910.052480.0
-1113160.049940.0
-1012460.047540.0
-911810.045270.0
-811190.043110.0
-710600.041070.0
-610050.039140.0
-59534.037310.0
-49046.035570.0
-38586.033930.0
-28151.032370.0
-17741.030890.0
07355.029490.0
16989.028150.0
26644.026890.0
36319.025690.0
46011.024550.0
55719.023460.0
65444.022430.0
75183.021450.0
84937.020520.0
94703.019630.0
104482.018790.0
114273.017980.0
124074.017220.0
133886.016490.0
143708.015790.0
153539.015130.0
163378.014500.0
173226.013900.0
183081.013330.0
192944.012790.0
202814.012260.0
212690.011770.0
222572.011290.0
232460.010840.0
242354.010410.0
252252.010000.0
262156.09605.0
272064.09227.0
281977.08867.0
291894.08523.0
301815.08194.0
311739.07880.0
321667.07579.0
331599.07291.0
341533.07016.0
351471.06752.0
361412.06500.0
371355.06258.0
381301.06026.0
391249.05805.0
401200.05592.0
411152.05389.0
421107.05193.0
431064.05006.0
441023.04827.0
45983.84655.0
46946.24489.0
47910.24331.0
48875.84179.0
49842.84033.0
50811.33893.0
51781.13758.0
52752.23629.0
53724.53504.0
54697.93385.0
55672.53270.0
56648.13160.0
57624.83054.0
58602.42952.0
59580.92854.0
60560.32760.0
61540.52669.0
62521.52582.0
63503.32497.0
64485.82417.0
65469.02339.0
66452.92264.0
67437.42191.0
68422.52122.0
69408.22055.0
70394.51990.0
71381.21928.0
72368.51868.0
73356.21810.0
74344.51754.0
75333.11700.0
76322.31648.0
77311.81598.0
78301.71549.0
79292.01503.0
80282.71458.0
81273.71414.0
82265.01372.0
83256.71332.0
84248.61293.0
85240.91255.0
86233.41218.0
87226.21183.0
88219.31149.0
89212.61116.0
90206.11084.0
91199.91053.0
92193.91023.0
93188.1994.2
94182.5966.3
95177.1939.3
96171.9913.2
97166.9887.9
98162.0863.4
99157.0839.7
100152.8816.8
101148.4794.6
102144.2773.1
103140.1752.3
104136.1732.1
105132.3712.6
106128.6693.6
107125.0675.3
108121.6657.5
109118.2640.3
110115.0623.5
111111.8607.3
112108.8591.6
113105.8576.4
114103.0561.6
115100.2547.3
11697.6533.4
11795.0519.9
11892.5506.8
11990.0494.1
12087.7481.8
12185.4469.8
12283.2458.2
12371.1446.9
12479.0435.9
12577.0425.3
12675.0414.9
12773.1404.9
12871.3395.1
12969.5385.6
13067.8376.4
13166.1367.4
13264.4358.7
13362.9350.3
13461.3342.0
13559.8334.0
13658.4326.3
13757.0318.7
13855.6311.3
13954.3304.2
14053.0297.2
14151.7290.4
14250.5283.8
14349.3277.4
14448.2271.2
14547.0265.1
14645.9259.2
14744.9253.4
14843.8247.8
14942.8242.3
15041.9237.0
Hoja2
Hoja2
16600003558000
15180003296000
13900003055000
12730002833000
11670002629000
10710002440000
9828002266000
9027002106000
8297001957000
7631001821000
7023001694000
6467001577000
5959001469000
5494001369000
5069001276000
4679001190000
4322001111000
3995001037000
369400968400
341800904900
316500845900
293200791100
271700740200
252000692800
233800648800
217100607800
201700569600
187400534100
174300501000
162200470100
151000441300
140600414500
131000389400
122100366000
113900344100
106300323700
99260304600
92720286700
86650270000
81020254400
75790239800
70930226000
66410213200
62210201100
58300189800
54660179200
51270169300
48110160000
45170151200
42420143000
39860135200
37470127900
35240121100
33150114600
31200108600
29380102900
2767097490
2607092430
2458087660
2318083160
2187078910
2064074910
1948071130
1840067570
1739064200
1643061020
1554058010
1470055170
1391052480
1316049940
1246047540
1181045270
1119043110
1060041070
1005039140
953437310
904635570
858633930
815132370
774130890
735529490
698928150
664426890
631925690
601124550
571923460
544422430
518321450
493720520
470319630
448218790
427317980
407417220
388616490
370815790
353915130
337814500
322613900
308113330
294412790
281412260
269011770
257211290
246010840
235410410
225210000
21569605
20649227
19778867
18948523
18158194
17397880
16677579
15997291
15337016
14716752
14126500
13556258
13016026
12495805
12005592
11525389
11075193
10645006
10234827
983.84655
946.24489
910.24331
875.84179
842.84033
811.33893
781.13758
752.23629
724.53504
697.93385
672.53270
648.13160
624.83054
602.42952
580.92854
560.32760
540.52669
521.52582
503.32497
485.82417
4692339
452.92264
437.42191
422.52122
408.22055
394.51990
381.21928
368.51868
356.21810
344.51754
333.11700
322.31648
311.81598
301.71549
2921503
282.71458
273.71414
2651372
256.71332
248.61293
240.91255
233.41218
226.21183
219.31149
212.61116
206.11084
199.91053
193.91023
188.1994.2
182.5966.3
177.1939.3
171.9913.2
166.9887.9
162863.4
157839.7
152.8816.8
148.4794.6
144.2773.1
140.1752.3
136.1732.1
132.3712.6
128.6693.6
125675.3
121.6657.5
118.2640.3
115623.5
111.8607.3
108.8591.6
105.8576.4
103561.6
100.2547.3
97.6533.4
95519.9
92.5506.8
90494.1
87.7481.8
85.4469.8
83.2458.2
71.1446.9
79435.9
77425.3
75414.9
73.1404.9
71.3395.1
69.5385.6
67.8376.4
66.1367.4
64.4358.7
62.9350.3
61.3342
59.8334
58.4326.3
57318.7
55.6311.3
54.3304.2
53297.2
51.7290.4
50.5283.8
49.3277.4
48.2271.2
47265.1
45.9259.2
44.9253.4
43.8247.8
42.8242.3
41.9237
44004/44003
44006/44031
Temperatura (C)
Resistencia (Ohm.)
Resistencia vs. Temperatura
Hoja3
Hoja3
16600003558000
15180003296000
13900003055000
12730002833000
11670002629000
10710002440000
9828002266000
9027002106000
8297001957000
7631001821000
7023001694000
6467001577000
5959001469000
5494001369000
5069001276000
4679001190000
4322001111000
3995001037000
369400968400
341800904900
316500845900
293200791100
271700740200
252000692800
233800648800
217100607800
201700569600
187400534100
174300501000
162200470100
151000441300
140600414500
131000389400
122100366000
113900344100
106300323700
99260304600
92720286700
86650270000
81020254400
75790239800
70930226000
66410213200
62210201100
58300189800
54660179200
51270169300
48110160000
45170151200
42420143000
39860135200
37470127900
35240121100
33150114600
31200108600
29380102900
2767097490
2607092430
2458087660
2318083160
2187078910
2064074910
1948071130
1840067570
1739064200
1643061020
1554058010
1470055170
1391052480
1316049940
1246047540
1181045270
1119043110
1060041070
1005039140
953437310
904635570
858633930
815132370
774130890
735529490
698928150
664426890
631925690
601124550
571923460
544422430
518321450
493720520
470319630
448218790
427317980
407417220
388616490
370815790
353915130
337814500
322613900
308113330
294412790
281412260
269011770
257211290
246010840
235410410
225210000
21569605
20649227
19778867
18948523
18158194
17397880
16677579
15997291
15337016
14716752
14126500
13556258
13016026
12495805
12005592
11525389
11075193
10645006
10234827
983.84655
946.24489
910.24331
875.84179
842.84033
811.33893
781.13758
752.23629
724.53504
697.93385
672.53270
648.13160
624.83054
602.42952
580.92854
560.32760
540.52669
521.52582
503.32497
485.82417
4692339
452.92264
437.42191
422.52122
408.22055
394.51990
381.21928
368.51868
356.21810
344.51754
333.11700
322.31648
311.81598
301.71549
2921503
282.71458
273.71414
2651372
256.71332
248.61293
240.91255
233.41218
226.21183
219.31149
212.61116
206.11084
199.91053
193.91023
188.1994.2
182.5966.3
177.1939.3
171.9913.2
166.9887.9
162863.4
157839.7
152.8816.8
148.4794.6
144.2773.1
140.1752.3
136.1732.1
132.3712.6
128.6693.6
125675.3
121.6657.5
118.2640.3
115623.5
111.8607.3
108.8591.6
105.8576.4
103561.6
100.2547.3
97.6533.4
95519.9
92.5506.8
90494.1
87.7481.8
85.4469.8
83.2458.2
71.1446.9
79435.9
77425.3
75414.9
73.1404.9
71.3395.1
69.5385.6
67.8376.4
66.1367.4
64.4358.7
62.9350.3
61.3342
59.8334
58.4326.3
57318.7
55.6311.3
54.3304.2
53297.2
51.7290.4
50.5283.8
49.3277.4
48.2271.2
47265.1
45.9259.2
44.9253.4
43.8247.8
42.8242.3
41.9237
44004/44003
44006/44031
Temperatura (C)
Resistencia (Ohm.)
Resistencia vs. Temperatura
-
ESPECIFICACIONES ELCTRICAS Tensin / CorrienteDescribe la variacin de la corriente del termistor en funcin de la tensin aplicada. Podemos diferenciar tres secciones:
1) Zona hmica. dV/dI = R2) Incremento no lineal. 3) Zona de pendiente negativa.
-
CONFIGURACIONESLos termistores se presentan en mltiples configuraciones, las ms empleadas son los de perla, disco y chip.Los termistores tipo perla debido a su pequeo tamao permiten una respuesta rpida ante los cambios de temperatura.Los termistores de disco y chip tienen una respuesta de disipacin mayor.
-
APLICACIONES Medicin de temperaturaPor su pequeo tamao, alta sensibilidad, rapidez y robustez, los termistores son muy utilizados en la medicin de temperatura.Sin embargo trabajan en un rango de temperatura limitado ( -40C a 300C) y hay que controlar que la corriente que circula por el termistor no sea suficiente para producir un excesivo autocalentamiento.Puente de Wheatstone
-
APLICACIONES AnemmetroCircuito que permite medir la velocidad del viento
-
APLICACIONES Medidor de caudalCircuito que permite medir el flujo de gas o lquido
-
APLICACIONES Manmetro de vacoCircuito que permite medir el grado de vaco en un recinto
-
APLICACIONES Circuito de retardo de tiempo
-
APLICACIONES Control/alarma de llama piloto
