User`s guide

273
Chapter 7 Tutorial
Measurement Fundamentals
4
7
Thermocouple Types
Constantan = Copper-Nickel; Nicrosil = Nickel-Chromium-Silicon; Nisil = Nickel-Silicone-Magnesium; N/A = Not Available
T/C Type Pos (+) Lead Neg (-) Lead
Temperature
Range
Probe
Accuracy
Comments
B
U.S.
British
DIN
Japanese
French
Platinum -30% Rhodium
Gray
N/A
Red
Red
N/A
Platinum -60% Rhodium
Red
N/A
Gray
Gray
N/A
250°C - 1820°C ±0.5°C High Temperature.
Beware of contamination.
Do not insert
in metal tubes.
J
U.S.
British
DIN
Japanese
French
Iron
White
Yellow
Red
Red
Yellow
Constantan
Red
Blue
Blue
White
Black
-210°C - 1200°C ±1.1°C - 2.2°C For vacuum, inert
environments.
Least expensive.
Not recommended for
low temperature.
K
U.S.
British
DIN
Japanese
French
Nickel-Chromium
Yellow
Brown
Red
Red
Yellow
Nickel-Aluminum
Red
Blue
Green
White
Purple
-200°C - 1370°C ±1.1°C - 2.2°C For oxidizing environments.
Good linearity
above 8°C.
T
U.S.
British
DIN
Japanese
French
Copper
Blue
White
Red
Red
Yellow
Constantan
Red
Blue
Brown
White
Blue
-200°C - 400°C ±0.5°C - 1°C Withstands moisture.
Has a copper lead.
Low temperature
applications.
E
U.S.
British
DIN
Japanese
French
Nickel-Chromium
Purple
Brown
Red
Red
Yellow
Constantan
Red
Blue
Black
White
Blue
-200°C - 1000°C ±1°C - 1.7°C Highest output voltage.
Highest resolution.
N
U.S.
British
DIN
Japanese
French
Nicrosil
Orange
N/A
N/A
N/A
N/A
Nisil
Red
N/A
N/A
N/A
N/A
-200°C - 1300°C ±1.1°C - 2.2°C Superior stability to
K type at higher
temperatures
R
U.S.
British
DIN
Japanese
French
Platinum -13% Rhodium
Black
White
Red
Red
Yellow
Rhodium
Red
Blue
White
White
Green
-50°C - 1760°C ±0.6°C - 1.5°C High Temperature.
Beware of contamination.
Do not insert in
metal tubes.
S
U.S.
British
DIN
Japanese
French
Platinum -10% Rhodium
Black
White
Red
Red
Yellow
Platinum
Red
Blue
White
White
Green
-50°C - 1760°C ±0.6°C - 1.5°C Low error, good stability.
High temperature
Beware of contamination.
Do not insert in
metal tubes.
34970A Refresh UG.book Page 273 Wednesday, February 17, 2010 12:34 PM