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Rosemount Tank Radar REX
Chapter 10 Mechanical Installation
10-40
Installation Manual
308014EN, Edition 4
May 2013
10.4.3 Reference Pin and Reflector
One of the holes on the Still Pipe is used for mounting a Reference Pin
which enables verification of the measurement when the tank is
pressurized.
The Reflector is mounted at the lower end of the Still Pipe and is
integrated with a ring that is used for calibrating the gauge.
See installation drawings for LPG/LNG Still Pipe for information on
where to place the reference pin in the still pipe. Enclosed with reference
pin and reflector are instructions on how to install these.
Figure 10-15. Still Pipe with reflector and reference pin.
The reflector can be attached to the Still Pipe by using one of three
methods:
• Welding
• M4 screw and nut
• Riveting
For pipe dimensions 4 inch SCH 40 and DN 100 an extra ring is needed
for the reflector as illustrated below:
Reference pin
Support
Calibration ring
Reflector
Still Pipe
StillPipe_924.eps/Reflector_Mount.eps
Min. 150 mm
2000 ±500 mm