The armor thermo-element has can curving, bear high-pressured, the hot response time quick and firm durable and so on merits, the armor thermo-element and the assembly type thermo-element is the same, takes the survey temperature the sensor, usually the armor thermo-element and the display instrument, the recording instrument and the electronic regulator necessary use, simultaneously, the armor thermo-element may also take the assembly type thermo-element the bulb. The armor thermo-element may in the direct measurement each kind of production process from 0℃~1100℃ the scope liquid, the steam and the gas medium as well as the solid surface temperature.
Major technique target
Temperature measurement scope and accuracy
Category |
Code number |
Indexing number |
Drive pipe outer diameter mm |
Commonly used temperature ℃ |
Highest application temperature ℃ |
Allowable deviation |
Measuring range ℃ |
Allowable deviation value |
Platinum rhodium 10- platinum |
WRPK |
S |
≥Φ3 |
1100 |
1200 |
0-1200 |
±1.5℃ or ±1.5%t |
Nichrome - copper nickel |
WREK |
E |
≥Φ3 |
600 |
700 |
0-700 |
±2.5℃ or ±0.75%t |
Nichrome - nickel silicon |
WRNK |
K |
≥Φ3 |
800 |
950 |
0-900 |
±2.5℃ or ±0.75%t |
Copper - copper nickel |
WRCK |
T |
≥Φ3 |
350 |
400 |
Is smaller than - 200 |
Has not made the stipulation |
-40-350 |
±0.75%t |
Hard - copper nickel |
WRFK |
J |
≥Φ3 |
500 |
600 |
0-600 |
±2.5℃ or ±0.75%t |
|
Note: “t " for is measured the temperature the absolute value.
The T indexing number product must with this factory consultation ordering.
* armor thermo-element hot response time
When the temperature presents the step change, the thermo-element output variation to quite the time which needs in this step change's 50% is called the hot response time, with τ0.5 expressed.
The armor thermo-element hot response time is not bigger than the next table the stipulation:
Hot response time τ0.5S |
Meets the shell type |
Insulation type |
Drive pipe diameter (mm) |
2.0 |
0.4 |
0.5 |
3.0 |
0.6 |
1.2 |
4.0 |
0.8 |
2.5 |
5.0 |
1.2 |
4.0 |
6.0 |
2.0 |
6.0 |
8.0 |
4.0 |
8.0 |
|
* model expression |
