DENSITY OPTION
280 Service Manual Part No.: 4417340 Revision 1
954 SmartServo FlexLine
Entity name Description
[Tank profile start
distance]
Refer to Figure 10-1. The distance from the liquid surface till the
middle point of the highest density measuring point. For a good
density measuring result, the value must be at least 0.3 m (1 ft).
[Default tank profile stop
level]
Refer to Figure 10-1. The middle point of the lowest density
measuring point. For a good density measuring result, the value
must be at least 0.2 m (8") above the motor limit switch low.
[Density scan direction] Determines the direction in which a tank profile (or interface profile)
is measured.
Scan direction down: from product surface downwards
Scan direction up: from bottom upwards
Note: When also water bottom is measured first via the water dip
command, it is advised to set the scan direction upwards. Then the
combined dip command directs the displacer downwards for water
measurement, and on the way back, density is measured.
[Number of tank profile
drum balance points]
The number of measurement points for one density measurement
equally distributed over one drum rotation.
[Tank profile method] Determines the measurement method:
• Multi over drum: measures at multiple points of one drum
rotation to get an accurate density measurement. This
method is the most accurate.
• One drum position: measures only at one drum position.
For an accurate density measurement, the unbalance
compensation must be enabled. This requires a valid
unbalance table (refer to section 9.1.3).
[Reset board] Reset the TII-SRV to activate the settings.
Settings for an interface profile measurement (command Interface profile)
The following entities must be programmed before the 954 SmartServo
FlexLine gauge can perform an Interface Profile density measurement.
Refer to
Figure 10-1.
The entities do not require a reset command.
Entity name Description
[Interface profile start
level]
Refer to Figure 10-1. An interface profile density start level
measurement can be performed at any location in the tank.
[Interface profile start level] specifies the highest interface level (so
that is independent of the density scan direction).
[Interface profile stop
level]
Refer to Error! Reference source not found. An interface profile
density start level measurement can be performed at any location in
the tank. [Interface profile stop level] specifies the lowest interface
level (so that is independent of the density scan direction).
[Density scan direction] Determines the direction in which an interface profile (or tank
profile) is measured.
Scan direction down: from [Interface profile start level]
downwards
Scan direction up: from [Interface profile stop level] upwards