Honeywell FlexLine SmartServo 954 Service Manual page 244

COMMISSIONING
Entity name
[Setpoint 3]
[Primary value offset]
(Water level)
[Interface 3]
236
Height lower conical part:
Density product: 0.9 g/cm
(
=
Setpoint 3 0.001* 223 - 105 0.45 0.5
A level offset must be given as the displacer is now immersed for half of
the volume in water. On product level the displacer is immersed less.
The difference between both immersion depths must be given in the
[Primary value offset]
of the primary value of the water or interface2 level.
(refer to Figure 7-41 (value L3) and to Appendix B for detailed displacer
information)
Example:
1. Immersion depth on product level surface:
Displaced volume:
([Displacer weight] - Setpoint1) / ρ
cm 3
Volume in cylindrical part: 16.67 - 3.2 = 13.47 cm
Immersion of cylindrical part: 13.47/
πr 2 = 13.47/(π*2.25
= 8.5 mm
Immersion depth on product: 8.5 + 6 = 14.5 mm
2. Separation line product / water:
water volume in cylindrical part:
½[Displacer volume] - 3.2 = 52.5 - 3.2 = 49.3 cm
Water height in cylindrical part: 49.3/πr
3.1 cm
= 31 mm
Separation line product / water: 31 + 6 = 37 mm (from lower
end of displacer)
Hence, the [Primary value offset]
37 - 14.5 = 22.5 [mm] = 0.00225 [m]
Entity name
(SmartView)
[Setpoint 3]
(Water level)
-
[Interface 3]
(Water level)
Service Manual
954 SmartServo FlexLine
6 mm
3
)
( )
+
2 ) = 0.85 cm
of the water level PV becomes:
Description
Set point for the product / water interface
measurement.
General level offset.
Used for level offset between interface 1 immersion
depth (where the gauge is calibrated) and the
product / water interface immersion depth.
Set default operation mode to interface 3 (refer to
section 0)
[ ]
=
0.12325 kg
= 15/0.9 = 16.67
product
3
3
2 = 49.3/(π x 2.25
Part No.: 4417340 Revision 1
2 ) =