HP 34970A User Manual page 347

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