Thermopar Temperature Ranges

Thermopar Temperature Ranges
Thermopar Type	General Application Range	Generic Names and Trade
B	0 at 1820ºC	Platinum 30% rhodium (BP) Platima Rhodium 6% (BN)
E	-270 at 1000ºC	Chromel (EP) Constantan (PT)
J	-210 at 760ºC	Iron (JP) Constantan (JN)
K	-270 at 1200ºC	Chromel (KP) Alumel (KN)
N	-270 at 1300ºC	Nicrosil (NP) Nisil (NN)
R	-50 at 1768ºC	Platinum 13% rhodium (SP) Pure Platinum (RN)
S	-50 at 1768ºC	Platinum rhodium 10% (SP) Pure Platinum (RN)
T	-270 at 400ºC	Copper (TP) Constantan (TN)

Thermopar initial tolerances in calibration
Type	Temperature	Normal Limits	Special Limits
T	-270ºC at 0ºC * 0ºC at 400ºC	± 1ºC or * ± 1,5% ± 1ºC or ± 0,75%	± 0,5ºC or * ± 0,8% ± 0,5ºC or ± 0,4%
J	-210ºC at 760ºC	± 2,2ºC or ± 0,75%	± 1,1ºC or ± 0,4%
E	-270ºC at 0ºC * 0ºC at 1000ºC	± 1,7°C or * ± 1% ± 1,7ºC or ± 0,5%	± 1ºC or * ± 0,5% ± 1ºC or ± 0,4%
K	-270ºC at 0ºC * 0ºC at 1200ºC	± 2,2ºC or ± 2% * ± 2,2ºC or ± 0,75%	N/A ± 1,1ºC or ± 0,4%

* Thermocouple wire is normally supplied to meet tolerances for temperatures above 0 º C. Special selection and tests may be necessary for these same materials, in order to fall within the given sub-zero tolerances.

Higher limit of temperature for various sizes in degrees C (ºF)
Termopar Type	8 Gage	14 Gage	20 Gage	24 Gage	28 Gage	30 Gage
Units	3,25mm	1,63mm	0,81mm	0,51mm	0,33mm	0,25mm
T	N/A	370 (700)	260 (500)	200 (400)	200 (400)	150 (300)
J	760 (1400)	590 (1100)	480 (900)	370 (700)	370 (700)	320 (600)
E	870 (1600)	650 (1200)	540 (1000)	430 (800)	430 (800)	370 (700)
K	1260 (2300)	1090 (2000)	980 (1800)	870 (1600)	870 (1600)	760 (1400)

The table above shows the upper recommended temperature limits for thermocouples of various wire types and sizes. These limits apply to protected thermocouples, that is, to conventional thermocouples closed with tubes that protect them.