Straight line thermocouple assemblies with ceramic protection tube (05-TKT) are mainly used for general temperature measurement in gaseous environments up to 1800°C.
Measurement and regulation processes can lead to strenuous operational demands through abrasion and corrosion. This is the reason for the protection tubes of these thermal sensors consisting of high grade heat-resistant ceramics. Metals often will not be able to bear the stress of this strain.
Aside from the industry customary oxide ceramics (purity of up to 99,8%), we offer non-oxide ceramics and individual solutions with a diversity of dimensions and materials. In most cases, GÜNTHER GmbH will have these items available from stock.
The assemblies of this product line can be fitted with an additional ceramic inner tube, which, in most cases, considerably increases endurance strength and total durability.
The maximum operating temperature is dependent both upon the mounting orientation (vertical / horizontal) and the corrosiveness of the respective ambient media.
Thermoelectric voltages and tolerances of our thermocouples are pursuant to DIN EN 60584, class 1.
Characteristics of the most usual ceramic types
| Unit | porous Ceramic |
TE- Porcelain |
Aluminium Oxide |
|
|---|---|---|---|---|
| Type pursuant DIN | / | C530 | C610 | C799 |
| Thermal Shock Resistance | / | Very Good |
Moderate |
Moderate |
| Impermeability | / | Porous | Gas-Tight | Gas-Tight |
| Maximum Constant Temperature | °C | 1650 | 1600 | 1850 |
| Al2O3-Content | % | 73-75% | 60 | 99,7 |
| Volume Weight | g*m3 | 2,35 | 2,5 | 3,8-3,93 |
| 3-Point Bending Strength | MPa | 35 | 120 | 300 |
| C-Modul | GPa | 60 | 110 | 370 |
Maximum application temperatures for Platinum-Rhodium-Platinum thermoelectric pairs
| Type | Diameter | Maximum Temperature |
|---|---|---|
| S | 0,35 mm | 1350°C |
| S | 0,50 mm | 1600°C |
| R | 0,35 mm | 1350°C |
| R | 0,50 mm | 1600°C |
| B | 0,35 mm | 1600°C |
| B | 0,50 mm | 1800°C |
Application Examples for Thermocouple Assemblies with Ceramic Protection Tube:
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GÜNTHER GmbH
Temperaturmesstechnik
Bauhofstraße 12
D-90571 Schwaig
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Tel. +49 (0)911 / 50 69 95-0
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