Rosemount Tank Radar AB 5900 用户手册

300520EN, Rev AA

November 2009

Rosemount 5900 Series

4-12

Section 4. Configuration

6. When a Rosemount 2240 tank temperature multiplexer is used, the 

vapor temperature is automatically mapped to the average temperature 
of all spot sensors above the product surface. In case you like to map a 
specific sensor, open the ATD Properties window and select the 
Parameter Source tab to choose the desired temperature source device.

7. Configure the reference pins.

In the LPG Setup window click the Config Pins button to open the 
LPG Configure Pins window:

Enter the reference pin position. The position is measured from the RTG 
Reference Point to the actual position of the reference pin. 

Since hand dipping can not be performed in high pressurized tanks, Emerson 
Process Management / Rosemount Tank Gauging has developed a unique 
method to verify level gauging in such tanks. The method is based on 
measurements in a special radar wave propagation mode against a fixed 
reference pin in order to verify the measurement.

NOTE!
The value entered in the Nominal Pos field refers to the mechanical distance 
from the RTG reference point to the actual reference pin. This value will only 
act as a starting point for the following verification process in which the 
electrical distance from the RTG reference point to the reference pin is 
calculated. In most cases the electrical distance deviates from the actual 
mechanical distance.