OPERATION
6
85
SITRANS FX330
www.siemens.com/flow
05/2016 - A5E36751269-AA
6.8.3 Net heat measurement
To determine the amount of energy, which is consumed by a plant, the gross heat quantity must
be reduced by the amount of energy, which is returned to the energy cycle. In the following
configuration example it is assumed that the gross heat quantity is determined for superheated
steam by the internal sensors and the outlet temperature value is fed into the device via the
current input.
Function
Parameters
C6.3 Extras
Activate one of the meter type options "Heat" (for saturated steam and temperature
compensation) or "Heat & Dens. by Pres." (for superheated steam and density
compensation by temperature and pressure) by entering the proper four digit code.
This needs to be done once.
Enter process parameters:
C1.1 Fluid
Steam
C1.2 Medium
Superheated Steam
C1.5 Current Input
C1.5.1 Function
On
C1.5.2 Current Input Meas.
Temperature External
C1.6 Temp. Sensor
C1.6.1 Temp. Source1
Internal
C1.6.2 Temp. Source2
External
C1.7 Pressure Sensor
C.1.7.1 Pressure Source
Internal
C6.5 Units
Select units of temperature, pressure, volume flow, power and energy.
C1.10 Operating Values
C1.10.3 Oper. Density
Operating density is important for sensor limits but will not be used during operation.
Configure output and totalizers:
C2.1 Current Output
C2.1.1 Current Out. Meas.
Net Power
C2.1.2 0% Range
C2.1.3 100% Range
Enter value for 0% and 100% in selected unit.
C4.2 Energy Totalizer
C4.2.1 Measurement
Net Power
C4.2.5 Start Totalizer?
Yes
Display two values on local display: (net power, net energy)
C5.3.1 Function
Two Values
C5.3.2 Measurement 1. Line
Net Power
C5.3.6 Measurement 2. Line
Net Energy
INFORMATION!
This is an example setup for basic net heat measurement. Other setup options are feasible.