Honeywell FlexLine SmartServo 954 Service Manual page 249

COMMISSIONING
Entity name
[Tank shell expansion
coefficient]
[Tank shell reference
temperature]
[Tank shell ambient temperature
selection]
[Tank shell vapour ambient ratio]
[Tank shell product ambient
ratio]
Tank type
Fixed roof tank
Fixed roof tank with stilling well *)
Insulated fixed roof tank
Floating roof tank with stilling well *)
Floating roof tank without stilling well
Part No.: 4417340 Revision 1

For the tank shell compensation, the following entities should be
set:
Default Value
< 16x10 [1/°C] >
-6
< 20 [°C] >
< TII-SRV board
temperature>
< 0.5 >
< 0.875 >
Standard values for [Tank shell vapour ambient ratio] and
[Tank shell product ambient ratio]
*) Here is meant that the SmartServo is installed on the stilling well.
The stilling well must be fixed at the tank bottom or at the first ring of the tank shell. If the stilling well is fixed at the top of the
tank, then select the values for entity items [Tank shell vapour ambient ratio] from the tank type without stilling well.
The gauge reference height is compensated for both the wet and dry
part of the tank shell. The compensated gauge reference height
[Compensated tank top] is available as a reference for hand
measurements.
Note: For proper reference a hand measurement must use the compensated
gauge reference height and subtract a temperature compensated tape value!
Service Manual
954 SmartServo FlexLine
Explanation
Expansion coefficient of the tank shell.
Carbon steel:
Stainless steel: 16x10
Reference temperature for the tank shell
compensation
Select the board temperature, magnet
temperature, the ambient temperature provided by
a local RTD board or the ambient temperature
distributed by a CIU.
Ratio of vapour and ambient temperatures for
calculation of the dry part of the tank shell
temperature. Refer to table 4 for more information
on the settings in a particular situation.
Ratio of product and ambient temperatures for
calculation of the wet part of the tank shell
temperature. Refer to table 4 for more information
on the settings in a particular situation.
[Tank shell vapour
ambient ratio]
0.5
1
1
0
0
-6
12x10 [1/°C]
-6
[1/°C]
[Tank shell product
ambient ratio]
0.875
1
1
1
1
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