ABB SwirlMaster FSS430 User Manual

52 CI/FSV/FSS/430/450-EN Rev. G | VortexMaster FSV430, FSV450 SwirlMaster FSS430, FSS450
6.7 Special operating modes
NOTICE
Pulse output for energy measurement
The pulse output generally relates to the selected flow unit.
If the flow unit is selected as energy unit "watt (W), kilowatt
(KW), or megawatt (MW)", the pulses relate to J (W), KJ
(KW), or MJ (MW).
1 watt then corresponds to 1 J/s.
6.7.1 Energy measurement for liquid measuring medium
(except water)
Order code N2
The VortexMaster FSV450 and the SwirlMaster FSS450 with
order code N2 have an extended function for measuring the
energy flow for fluids, which is built into the transmitter.
Based on the values for actual volume flow, density, heat
capacity of the medium (energy unit / mass flow unit), the
temperature upstream (built-in Pt100 resistance thermometer)
and the temperature downstream, the transmitter calculates
the actual volume flow and the energy flow.
Fig. 46: Measurement of liquid energy
1 Upstream 2 VortexMaster / SwirlMaster with built-in
temperature sensor 3 Temperature transmitter, via HART- or analog
input 4 Downstream
6.7.2 Energy measurement for steam / hot water in
accordance with IAPWS-IF97
Order code N1
The VortexMaster FSV450 and the SwirlMaster FSS450 with
option N1 have an extended function for measuring the flow of
steam, which is built into the transmitter.
Fig. 47: Energy measurement
1 Feed flow 2 VortexMaster / SwirlMaster with built-in
temperature sensor 3 Pressure transmitter, via HART- or analog
input 4 Temperature transmitter, via HART- or analog input
5 Condensate return flow
Based on the values of pressure (external diaphragm seal,
connected via HART or analog input, or a preset pressure
value) and temperature (built-in Pt100 resistance
thermometer), the transmitter calculates the density and the
energy content of the measuring medium.
The measured volume flow rate is converted into the mass
flow rate and energy flow rate.
The type of energy calculation can be selected:
— Gross energy: The amount of energy that flows through
the device is recorded. Any energy re-flow in form of
condensate is not considered.
— Net energy: The amount of energy that flows through the
device is recorded. Any energy re-flow in form of
condensate is deducted again from the amount of energy.
For this, an additional external temperature transmitter
must be connected.
G11782
3
1
4
2
G11781
3
4
1
5
2

ABB SwirlMaster FSS430 Specifications

General

Brand	ABB
Model	SwirlMaster FSS430
Category	Measuring Instruments
Language	English