Immersion length

Installation possibilities:
The maximum possible immersion length of the thermocouple sensor in the process is dependent on the guidance, the thermowell diameter and material, the holder pipe diameter, the process temperature and the weight of the sensor. At a horizontal installation high process temperatures and the weight of the sensor can lead to a bending of the thermowell. Thus a later exchange will be difficult.

Note:
For an immersion length Lg > 1500 mm (diameter 20 mm and bigger) respectively Lg > 1200 mm (diameter < 20 mm) a vertical installation is recommended. If at larger immersion lenghts the installation in the process can only be made horizontally this should be checked and cleared first with your Endress+Hauser customer service department.

 

High temperature thermocouple

Example of installation
(1) Connection head
(2) Neck
(3) Flange process connection according to DIN 43734
(4) Ceramic or metal thermowell
(5) Ceramic insulators
(6) Measurement point

Note:
In order to avoid thermo shock damage to the thermocouple with a ceramic thermowell installation and removal of the thermocouple must be done slowly and under process temperatures.