Micro- and laboratory thermocouple assemblies (18-TKL) are preferentially used for technical temperature measurements in liquid and gaseous media within a temperature range between 200°C and 1800°C.
These thermocouples have a ceramic insulated wire element and a ceramic protection tube. The maximum temperature for this series is 1800 °C and the maximum pressure 1 bar. A wide variety of connection and mounting forms is available. Because of the compact design, these thermocouples have a fast response time. The miniature and laboratory thermocouples are often applied in relatively small ceramic and laboratory ovens. To prevent poisoning of the precious metal couples, we advise gas-tight ceramics.
Miniature and laboratory thermocouple assemblies differ from conventional thermocouple assemblies in their, very small, dimensions, they are light weight and have variable mounting options. They also secure exact temperature measurements within a constrained installation space. In consequence of design, these sensors also have very short reaction times.
There is a notable danger of “poisoning” precious metal thermocouples in miniature and laboratory thermocouple assemblies by substances diffusing through the protective fitting, such as those to be found in flue gas, for example. In order to avoid these types of influences, we recommend using a version employing gas-tight ceramic.
The thermal materials used by GÜNTHER GmbH for micro- and laboratory thermocouple assemblies are pursuant to DIN EN 60584.
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 |
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 |
Guenther Polska Sp. z o.o.
Ul. Wrocławska 27C
55-095 Długołęka
Polska
Tel.: 00 48 71 352 70 70
Fax: 00 48 71 352 70 71
E-mail: biuro@guenther.com.pl