TR44, TR45
18
Hauser
Installation conditions
Orientation
No restrictions, but self draining. If applicable leak detection hole must be at the lowest point.
Installation instructions
The immersion length of the thermometer influences the accuracy. If the immersion length is too small then
errors in the measurement are caused by heat conduction via the process connection and the container wall.
If installing into a pipe then the immersion length must be half of the pipe diameter, ideally.
• Installation possibilities: Pipes, tanks or other plant components
• Minimum immersion length = 80 to 100 mm (3.15 to 3.94 in)
The immersion length should correspond to at least 8 times of the thermowell diameter. Example:
Thermowell diameter 12 mm (0.47 in) x 8 = 96 mm (3.8 in). A standard immersion length of 120 mm (4.72
in) is recommended
• ATEX certification: Always take note of the installation regulations!
!
Note!
When operating in small nominal bore pipes it must be guaranteed that the thermowell tip is extending far
enough into the process to reach out past the pipe center line (see Pos. A and B). A further solution could be
an angled (tilted) installation (see Pos. C and D). When determining the immersion length all thermometer
parameters and the process to be measured must be taken into account (e.g. flow velocity, process pressure).
a0008946
General installation solutions
A - B: In pipes with a small cross section the sensor tip should reach or extend slightly past the center line of the pipe (=
L). Installation with minimal 3° inclination because of self draining.
C - D: Tilted installation.
Summary of Contents for Omnigrad M TR44
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