Product Name：Alumina ceramic thermocouple protection tube
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Alumina ceramic thermocouple protection tube
Thermocouple temperature measuring instrument is a commonly used temperature measuring element in industrial production. Among them, the key core parts are temperature measuring heating wire and insulating protective sleeve. Alumina ceramic insulating protective sleeve has good thermal conductivity and high temperature resistance. It is widely used in the production of thermocouples. It plays a key role in protecting the temperature measurement and thermal conductivity wires and increases the service life of thermocouples. The corundum protective sleeve has a sealed round head shape at one end and good compactness. It is generally used in conjunction with an insulating core to form an important temperature measuring element of a thermocouple protection tube.
Physical Property:
Material | Alumina Content | ||||
Characteristic | Unit | AL99.7 | AL99.5 | AL99 | AL95 |
Content | 99.7% | 99.5% | 99% | 95% | |
Color | Ivory white | Ivory white | Ivory white | Ivory white，
| |
Density | g/cm | 3.94 | 3.9 | 3.8 | 3.75 |
Straightness | 2‰ | 2‰ | 2‰ | 2‰ | |
Hardness | Mohs hardness | 9 | 9 | 9 | 8.8 |
Water absorption | ≦0.2 | ≦0.2 | ≦0.2 | ≦0.2 | |
Flexural strength | (20℃) Mpa | 375 | 370 | 340 | 304 |
Compressive strength | (20℃) Mpa | 2300 | 2300 | 2210 | 1910 |
Thermal expansion coefficient | 10/℃ | 7.6 | 7.6 | 7.6 | 7.6 |
Dielectric strength | AC.kv/mn | 10 | 10 | 10 | 10 |
Dielectric loss | <0.0001 | <0.0001 | 0.0006 | 0.0004 | 0.001 |
Volume resistivity （20℃） （300℃） |
ΩNaN3 |
>1014 2*1012 |
>1014 2*1012 |
>1014 4*1011 |
>1014 2*1011 |
Dielectric constant | 25℃@1HM | 9.8 | 9.7 | 9.5 | 9.2 |
Thermal conductivity | W/m.k | 35 | 35 | 34 | 20 |
Long-term use temperature | ℃ | 1700 | 1650 | 1600 | 1400 |
SIze :
OD*ID (mm) | Model & length | OD*ID (mm) | Model & length | OD*ID (mm) | Model & length |
2*1 |
Al2O3 99.5% ≦1500 mm
| 10*7 |
Al2O3 95% / Al2O3 99%/ Al2O3 99.5% ≦2500 mm | 19.05*14.3 |
Al2O3 95% / Al2O3 99%/ Al2O3 99.5% ≦2500 mm |
3*2 | 11.13*7.95 | 20*15 | |||
4*2.5 | 12*8 | 22.23*15.88 | |||
5*3 | 12.7*8.9 | 23.83*17.48 | |||
6.35*3.96 |
Al2O3 95% / Al2O3 99%/ Al2O3 99.5% ≦2500 mm | 14*10 | 25.4*19.05 | ||
7.95*4.78 | 15*10 | 26*20 | |||
8*5.5 | 15*11 | 28*22 | |||
9.53*6.35 | 16*12 | 30*23 | |||
10*6 | 17.48*12.7 |
Delivery time of goods in stock : 2-3 days
Production cycle of customized Size : 25-30 days
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Alumina ceramic thermocouple protection tube alumina ceramic tube core Thermocouple insulation tube| Company name: | Please fill in your company name |
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