SwirlMaster FSS430, FSS450 VortexMaster FSV430, FSV450 | CI/FSS/FSV430/450-EN Rev. D 37
6.5 Special operating modes
6.5.1 Measuring the energy of steam
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.
Based on the values of pressure (external diaphragm seal,
connected via HART or analog input, or a pre-set pressure
value) and temperature (built-in Pt100 resistance
thermometer), the transmitter calculates the actual volume
flow, the mass flow and the energy flow.
Fig. 30: Measuring the energy of steam
1 Steam 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
6.5.2 Measuring the energy of liquids
Order code N2
The VortexMaster FSV450 and the SwirlMaster FSS450 with
option N2 have an extended function for measuring energy
flow for liquids (such as hot water or brine), 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),
temperature of the feed flow (built-in Pt100 resistance
thermometer) and temperature of the return, the transmitter
calculates the actual volume flow and the energy flow.
Fig. 31: Measuring the energy of liquids
1 Feed flow
2 VortexMaster / SwirlMaster with built-in temperature sensor
3 Temperature transmitter, via HART or analog input
4 Return
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