Omega Speaker Systems OME-DB-889D manual Voltage to Temperature Conversion

3.3.1 Voltage - TO - Temperature Conversion

The temperature-versus-voltage relationship of a the thermocouple is not linear. You can reference the thermocouple reference tables to get V to T values. Or use temperature conversion equation to get V to T values.

Temperature Conversion Equation:

T = a0 + a1 x + a2 x^2 + a3 x^3 + a4 x^4 + …….. + an x^n

where

T = Temperature

x = Thermocouple Voltage

a = Polynomial coefficients unique to each thermocouple n = Maximum order of the polynomial

	TYPE E	TYPE J	TYPE K	TYPE R	TYPE S	TYPE T
a0	-100°C to 1000°C	0°C to 760°C	0°C to 1370°C	0°C to 1000°C	0°C to 1750°C	-160°C to 400°C
a1	0.104967248	-0.048868252	0.226584602	0.263632917	0.927763167	0.100860910
a2	17189.45282	19873.14503	24152.10900	179075.491	169526.5150	25727.94369
a3	-282639.0850	-218614.5353	67233.4248	-48840341.37	-31568363.94	-767345.8295
a4	12695339.5	11569199.78	2210340.682	1.90002E+10	8990730663	78025595.81
a5	-448703084.6	-264917531.4	-860963914.9	-4.82704E+12	-1.63565E+12	-9247486589
a6	1.10866E+10	2018441314	4.835606E+10	7.62091E+14	1.88027E+14	6.97688E+11
a7	-1.76807E+11		-1.18452E+12	-7.20026E+16	-1.37241E+16	-2.66192E+13
a8	1.71842E+12		1.38690E+13	3.71496E+18	6.17501E+17	3.94078E+14
a9	-9.19278E+12		-6.33708E+13	-8.03104E+19	-1.56105E+19
	2.06132E+13				1.69535E+20

Note:

1.The thermocouple range of this table is this equation limited.

2.Other detail data please reference thermocouple data book.

OME-DB-889D User’s Manual 13