Temperature switch TF-M-Atex / TF-E-Atex series : Bühler Technologies GmbH

Temperature switch TF-M-Atex / TF-E-Atex series

ATEX application Zone 1 (cat. 2G), intrinsically safe as per EN 60079-11
Simple, robust design
Electrical inner part, easy to remove
Optionally DIN connector or M12 base connector
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 application, this may have to take place continuously with a high degree of accuracy. In the process, the Pt100 has asserted its position as the standard sensor in nearly all areas of technology. It is a resistor, whose value changes in proportion to the temperature, which results in a continuous signal change.

The resistance value of the Pt100 connection cable must be taken into consideration as of a length of >3 m / 9.8 ft, when aligning the measured value.

The TF-M-Atex/TF-E-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.