Office: (713) 699-1393
Thermo/Probes, Inc. manufactures quality industrial thermocouple sensors. Thermocouples can be applied in most temperature measurement and control applications. With over 40 years of experience, we are prepared to provide thermocouple temperature sensor solutions for the most complex situations.
ANSI/ASTM | Thermocouple Layout | Symbol Single | Material (Composition) | Tolerance (Celsius) | Tolerance (Fahrenheit) | ||
---|---|---|---|---|---|---|---|
Temp. Range | Standard | Temp. Range | Standard | ||||
T | TP | Copper |
-200° to -67° -67° to 133° 133° to 370° |
± 1.5% T ± 1° ± 0.75% T |
-328° to -88° -88° to 272° 272° to 700° |
± 1.5% (T - 32) ± 1.8° ± 0.75% (T - 32) |
|
TN | Constantan (55% Cu, 45% Ni) | ||||||
J | JP | Iron |
0° to 293° 293° to 760° |
± 2.2° ± 0.75% T |
32° to 560° 560° to 1400° |
± 3.96° ± 0.75% (T - 32) |
|
JN | Constantan (55% Cu, 45% Ni) | ||||||
E | EP | Chromel (90% Ni, 10% Cr) |
-200° to -170° -170° to 340° 340° to 870° |
± 1% T ± 1.7° ± 0.5% T |
-328° to -274° -274° to 644° 644° to 1600° |
± 1% (T - 32) ± 3.06° ± 0.5% (T - 32) |
|
EN | Constantan (55% Cu, 45% Ni) | ||||||
K | KP | Chromel (90% Ni, 10% Cr) |
-200° to -110° -110° to 293° 293° to 1260° |
± 2% T ± 2.2° ± 0.75% T |
-328° to -166° -166° to 560° 560° to 2300° |
± 2% (T - 32) ± 3.96° ± 0.75% (T - 32) |
|
KN | Alumel (95% Ni, 2% Mn, 2% Al) | ||||||
N | NP | Nicrosil (84.6% Ni, 14.2% Cr, 1.4% Si) |
0° to 293° 293° to 1250° |
± 2.2° ± 0.75% T |
32° to 560° 560° to 2300° |
± 3.96° ± 0.75% (T - 32) |
|
NN | Nisil (95.5% Ni, 4.4% Si, 1% Mg) | ||||||
S | SP | Platinum (10% Rhodium) |
0° to 1260° 1260° to 1480° |
± 1.5° ± 0.25% T |
32° to 2300° 2300° to 2700° |
± 2.7° ± 0.25% (T - 32) |
|
SN | Pure Platinum | ||||||
R | RP | Platinum (13% Rhodium) |
0° to 1260° 1260° to 1480° |
± 1.5° ± 0.25% T |
32° to 2300° 2300° to 2700° |
± 2.7° ± 0.25% (T - 32) |
|
RN | Pure Platinum | ||||||
B | BP | Platinum (30% Rhodium) | 870° to 1700° | ± 0.5% T | 1600° to 3100° | ± 0.5% (T - 32) | |
BN | Platinum (6% Rhodium) | ||||||
C * | P | Tungsten (5% Rhenium) |
0° to 426° 426° to 2315° |
± 4.4° ± 1% T |
32° to 800° 800° to 4200° |
± 8° ± 1% (T - 32) |
|
N | Tungsten (26% Rhenium) |