Emerson Rosemount 5900 Reference Manual page 22

Rosemount 5900 Series
2-8
Preliminary
The Rosemount 5900 with LPG/LNG antenna is
designed for level measurements in LPG and LNG
tanks. A 4" still pipe is used as a wave guide for the
measurement and prevents a wavy or boiling surface
from disturbing the measurement. Radar signals are
transmitted inside the pipe towards the surface.
The pressure sealing is a quarts window approved for
use in pressure vessels. As standard the gauge is
also equipped with a fire-proof block valve and a
vapor space pressure sensor.
The Rosemount 5960 is available in two versions, a
150 PSI version and a 300 PSI version.
The patented reference pin function enables
verification of measurement without opening the tank.
By setting the gauge into "test mode" the measured
distances are compared with the actual distances.
Reference Manual
300520EN, Rev AA
November 2009
Section 2. Overview