Emerson Rosemount 5900, Справочное руководство

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Reference Manual
300520EN, Rev AA
November 2009
3-15
Rosemount 5900 Series
Section 3. Installation
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 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:
Reference pin
Support
Calibration ring
Reflector
Still Pipe
Min. 150 mm
2000 ±500 mm
Preliminary