13
4 Temperature Measurement
4.1 Using Thermocouple (TC)
The calibrator supports eleven standard thermocouples, including J, K, T, E, R, S, B, L,
U and N. Lower table summarizes the ranges and characteristics of the supported
thermocouples
Graduation
Positive lead
material
Positive wire (H)
color
Negative lead
material
Specified
span
℃
ANSI*
IEC**
E
Chrome-nickel
Mauve
Purple
Constantan
-200
~
950
N
Nickel-chrome
-silicon
Orange
Pink
Nickel-silicon-magne
sium
-200
~
1300
J
Iron
White
Black
Constantan
-200
~
1200
K
Chrome-nickel
Yellow
Green
Alumel
-200
~
1370
T
Copper
Blue
Brown
Constantan
-200
~
400
B
Platinum (30%
rhodium)
Grey
Platinum (6%
rhodium)
600
~
1800
R
Platinum (13%
rhodium)
Black
Orange
Platinum
-20
~
1750
S
Platinum (10%
rhodium)
Black
Orange
Platinum
-20
~
1750
* Negative conductor (L) regulated as American National Standard (ANSI) is always red.
*Negative conductor (L) regulated as International Electro-technical Commission (L) is always white.
To measure temperature using thermocouple, the following steps shall be followed:
1.
Connect the thermocouple to the calibrator as shown in Figure 4.1-1: