Temperature switch TSA-Atex, TÖA-Atex series : Bühler Technologies GmbH

Temperature switch TSA-Atex, TÖA-Atex series

ATEX application Zone 1 (cat. 2G), intrinsically safe as per EN 60079-11
Simple, robust design
Electrical inner part, easy to remove
Cable outlet direction adjustable in 90° steps for DIN connector
Elastic sealing ring

Since the viscosity of oil changes based on the temperature, operating temperatures must be monitored. Depending on the requirements, monitoring by means of indicating the minimum temperature to warning points and ending with shut down, will suffice. The warning or shut-off points are implemented using a bimetallic switch and in the process, hysteresis can also be used as a reset point.

When applying switch points below 50°C / 122 °F it must be observed that there is a sufficient temperature difference between the system and ambient temperature because otherwise the reset point cannot be reached reliably.
The TSA-Atex series consists of simple electrical equipment without a separate voltage source. In the case of intrinsically safe connections as per EN 60079-11, the TSA-Atex can be used in Zone 1 (group IIC, device category 2G) explosive areas; this also applies to the inner zone of the tank. The temperature switches are classified into temperature class T4. The design of the temperature switch was chosen, to enable the removal of the electrical inner workings without having to remove the switching tube from the tank. This is convenient if the temperature switch is installed externally underneath oil.