Thermocont® TS4L

Temperaturesensors and -transmitters Pt100 with self-monitoring for food

• Suitable for hygienic applications
• Self-verifying measured value
• Housing and display can be rotated

The devices of series Thermocont® TS4L with integrated digital evaluation electronic are compact temperature switches for monitoring, control as well as continuous measurement of process temperatures from –99,9°C to +500°C in gases, vapors, liquids and dusts in hygienic application fields at process pressures of up to 40 bar.

Suitable for hygienic and aseptic applications in
• Food and beverage industry
• Pharmaceutical industry
• Biotechnology
• Sterile process engineering

Function

The device is mounted into the wall of the container or of the pipeline. By using a neck tube of a adequate length between the respective process connection and the connection housing at high medium temperatures it can be achieved that the temperature in the area of the connection housing does not exceed the permitted environmental temperatures. The sensor tube is the junction point with the applied medium and is in direct contact with it. It contains the temperature sensor that is used for recording the temperature and converting it into an electrical signal. At the device Thermocont® TL4S the recording of the process temperature is made by a resistive temperature sensor element Pt100 of class A. This allows a precise and long term stable temperature measurement. At device Thermocont® TS4L the recording of the process temperature is made in parallel at first by a resistive temperature sensor element Pt100 of class A and second by a semiconductor temperature sensor. Because of the parallel measurement with two different thermal coupled sensor elements, the temperature switch detects impermissible drifts of a sensor and errors at the temperature measurement automatically. At the failure of one of the two sensor elements the temperature measurement can be also continued with the second element, what realizes a redundancy function.