Net Heat Measurement - Siemens SITRANS FX330 Operating Instructions Manual

SITRANS FX330

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
C6.3 Extras
Enter process parameters:
C1.1 Fluid
C1.2 Medium
C1.5 Current Input
C1.5.1 Function
C1.5.2 Current Input Meas.
C1.6 Temp. Sensor
C1.6.1 Temp. Source1
C1.6.2 Temp. Source2
C1.7 Pressure Sensor
C.1.7.1 Pressure Source
C6.5 Units
C1.10 Operating Values
C1.10.3 Oper. Density
Configure output and totalizers:
C2.1 Current Output
C2.1.1 Current Out. Meas.
C2.1.2 0% Range; C2.1.3 100% Range
C4.2 Energy Totalizer
C4.2.1 Measurement
C4.2.5 Start Totalizer?
Display two values on local display: (net power, net energy)
C5.3.1 Function
C5.3.2 Measurement 1. Line
C5.3.6 Measurement 2. Line
Table 6-38: Net heat measurement
INFORMATION!
This is an example setup for basic net heat measurement. Other setup options are feasible.
08/2022 - A5E36751269-AG EN
Parameters
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 (if not activated by order). This needs to be done
once.
Steam
Superheated Steam
On
Temperature External
Internal
External
Internal
Select units of temperature, pressure, volume flow, power and energy.
Operating density is important for sensor limits but will not be used during
operation.
Net Power
Enter value for 0% and 100% in selected unit.
Net Power
Yes
Two Values
Net Power
Net Energy
www.siemens.com/flow
OPERATION
6
91