Installation Manual

Rosemount Tank Radar REX

308014EN, Edition 4

Chapter 12 Sensor Installation

May 2013

 

 

12.2.2Configuration

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.

Tank Reference point

 

Mark

 

 

 

version2.eps

 

20 mA

 

 

 

 

geometry

Tank Zero Level

 

Water Zero

 

 

 

4 mA

Level

wls_

 

 

 

 

Figure 12-8.

Tank geometry for the Water Level Sensor

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.

12-6

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Emerson 308014EN, Edition 4 installation manual 12-6, Tank geometry for the Water Level Sensor
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