WIKA TW61, Operating Instructions Manual

Page: 5 / 68

WIKA operating instructions thermowell, model TW61
11593963.06 04/2019 EN/DE/FR/ES
5
EN
2. Design and function
2. Design and function
2.1 Description
The model TW61 thermowell is used to adapt thermometers and measuring inserts to the
process and protects the sensor against harsh process conditions. Furthermore, it enables
the removal of the temperature probe without having to open the process.
To integrate it into the process, the thermowell is directly orbitally welded into a pipeline. The
connection ends are smooth and prepared for orbital welding.
In combination with a resistance thermometer, the rotatable threaded connection of the
connection head or the display can be loosened and turned to the desired orientation.
The measuring insert can be withdrawn together with the connection head. In this way,
it is possible to calibrate the entire measuring chain (sensor, transmitter if applicable,
connection cable) on site, without having to disconnect the electrical connection. In addition
this avoids having to open the process, and thus the risk of contamination is minimised.
The thermowell is not piggable.
2.2 Dimensions in mm
■
Flow-through housing
alternative Darstellung
14000996.01
For miniature resistance thermometer model TR21-B
1)
1) In the event of replacement,
calculate the probe insertion
length, l
1
, as follows:
l
1 (TR21-B)
= U
1
+ M + 3 mm