Expendable Thermocouples
1.Genenal
K type thermocouple is a sensor for temperature measurement. It can be connected to a fast potentiometer or a digital instrument to measure temperatures of melted iron, steel or other metals.
2.Specification
|
Type |
Calibration no. |
Composing Materials |
|
|
+leg（1） |
-leg（2） |
||
|
K |
S |
PtRh10% |
Pt |
|
K |
B |
PtRh30% |
PtRh6% |
|
K |
R |
PtRh13% |
Pt |
|
K |
W |
Tungsten-3%rhenium |
Tungsten-25%rhenium |
Note(1): The +leg means a leg to be connected to +terminal of an instrument to measure thermal electromotive force and -leg means opposite side one.
|
Type |
Calibration no. |
Wire diameter (mm) |
Max. working temperature℃ |
Thermal electromotive Force（Mv） |
|
K |
S |
0.05~0.07 |
1650℃ |
18.709 |
|
K |
B |
0.05~0.07 |
1750℃ |
13.814 |
|
K |
R |
0.05~0.07 |
1700℃ |
|
|
K |
W |
0.1 |
1800℃ |
|
Response time：less than 5 seconds.
Tolerance on temperature：
|
Type |
Calibration no. |
Temperature range |
Accuracy |
|
K |
S |
1200—1650℃ |
＜±4℃ |
|
K |
B |
1200—1750℃ |
＜±4℃ |
|
K |
R |
1000—1700℃ |
＜±4℃ |
|
K |
W |
1000—1800℃ |
＜±5℃ |
3.Structure
1)Structure of thermocouple
①Cardboard (ID 18mm/OD 30mm)
②plasticsupport
③refractory cement body
④refractory cement head
⑤quartz tube
⑥protective iron / Al cap
2)Weight of thermocouple：250 grams with 1000mm long paper tube
