Rosemount Tank Radar AB 5900 用户手册

300520EN, Rev AA
November 2009

3-15

Rosemount 5900 Series

Section 3. Installation

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 during the installation phase 
when the tank is empty. 

See installation drawings for LPG/LNG Still-pipe for information on where to 
put the reference pin in the still-pipe. Installation instructions are enclosed 
with the reference pin and reflector.

Figure 3-13. 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 in Figure 3-14 and Figure 3-15: