Interface Measurement; Calculation Of Set Point - Honeywell FlexLine SmartServo 954 Service Manual

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Interface measurement

Figure 7-41
Part No.: 4417340 Revision 1
Interface 3 is used as product / water interface measurement (with
interface 2 another interface can be measured). The set point must be
set to such a value that half of the displacer volume is immersed in the
water and the other half of the displacer volume is immersed in the
product. That can be calculated as follows (refer to Figure 7-41 and to
Appendix B for detailed displacer information):
(
=
Setpoint3 0.001* [Displacer weight] - [Displacer volume]
where:
[Setpoint3]: set point interface 3 measurement [kg]
[Displacer weight]:
[Displacer volume]:
ρ : density of the product [g/cm
product
ρ : density of water [g/cm
water

Calculation of set point

Example:
Displacer #0815.343:
Displacer weight:
Displacer volume:
Volume lower conical part:
Service Manual
954 SmartServo FlexLine
displacer weight [g]
displacer volume [cm
]
3
3 ]
ø45 mm
223 g
105 cm
3
3.2 cm 3
( )
ρ ρ
1 + 1
2 2
product water
3 ]
)
[ ]
kg
235