Справочник Пользователя для Emerson 308014EN

Rosemount Tank Radar REX
Chapter 12 Sensor Installation

308014EN, Edition 4

May 2013

It is important that the 4 mA and the 20 mA levels are properly configured 
in order to obtain correct water level readings from the WLS. The 
distance “X” between the Tank Zero Level and the Water Zero Level 
has to be considered when configuring the WLS. “X” can be calculated 
from known tank distances as illustrated in Fig. 12-8.

The distance X can be calculated with the following formula:

X = (R-L1) - (L-L2).

X=distance between the Tank Zero Level and the Water Zero Level.

L=distance between Water Zero Level and mark on the upper part of the 
WLS.

R= Tank Reference Height. This is the distance between the Tank 
Reference Point and the Tank Zero Level.

L1=distance between the Tank Reference Point and the temperature 
sensor flange.

L2=distance between the mark on the top of the WLS and the 
temperature sensor flange.

wls_geometry_version2.eps