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Our Material Systems

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Our Material Systems

Our typical Material Systems with temperature multiples

Temperature °C/°F	Material System - 2 β(25/85)°C = 3980K Rt / R25 nominal	Material System - 4 β(25/85)°C = 3690K Rt / R25 nominal	Material System - 5 β(25/85)°C = 3970K Rt / R25 nominal	Material System - 6 β(25/85)°C = 3960K Rt / R25 nominal	Material System - 7 β(25/85)°C = 3935K Rt / R25 nominal
-40/-40	33.36	24.25	34.23	33.00	29.96
-20/-4	9.68	7.94	9.78	9.58	9.11
0/32	3.26	2.96	3.27	3.24	3.18
25/77	1.00	1.00	1.00	1.00	1.00
50/122	0.360	0.390	0.360	0.362	0.366
85/185	0.107	0.126	0.108	0.108	0.110
100/212	0.0678	0.0821	0.0683	0.0685	0.0694
120/248	0.0388	0.0486	0.0392	0.0392	0.0395
150/302	0.0184	0.0241	0.0187	0.0186	0.0186

Temperature °C/°F	Material System - 8 β(25/85)°C = 3435K Rt / R25 nominal	Material System - 9 β(25/85)°C = 3740K Rt / R25 nominal	Material System - 10 β(25/85)°C = 4250K Rt / R25 nominal	Material System - 12 β(25/85)°C = 3540K Rt / R25 nominal	Material System - 13 β(25/85)°C = 4073K Rt / R25 nominal
-40/-40	18.40	27.31	41.54	22.41	36.07
-20/-4	6.72	11.20	11.18	7.48	10.21
0/32	2.72	3.05	3.52	2.85	3.36
25/77	1.00	1.00	1.00	1.00	1.00
50/122	0.416	0.383	0.336	0.403	0.351
85/185	0.145	0.122	0.092	0.137	0.101
100/212	0.0973	0.0796	0.0562	0.0911	0.0633
120/248	0.0596	0.0471	0.0308	0.0553	0.0360
150/302	0.0308	0.0234	0.0138	0.0282	0.0168

Our typical customer tolerance examples

Resistance at 25°C	Material System	Tolerance	Application
30k Ω	7	+/- 0.2°C (0°C to 70°C)	Spas
30k Ω	7	+/- 0.1°C (25°C to 50°C)	Spas
25k Ω	12B	+/- 0.1°C (0°C to 30°C)	Medical Diagnostics
20k Ω	12	+/- 0.1°C (25°C to 50°C)	Medical Diagnostics
2.2k Ω	21	+/- 0.2°C (0°C to 25°C)	Automotive
10k Ω	2	+/- 0.2°C (25°C to 100°C)	HVAC

Typical in-house Beta Value (25/85)°C range of 3000 to 5000 K with a tolerance as tight as +/- 0.15%

© EXA Thermometrics India Pvt. Ltd. No.181, Lake Shore Road, BTM Layout - II Stage, Bangalore:560076.
Tel :+91-80-40698200, +91-80-40698210\211

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