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DEVICE DESCRIPTION
2
19
SITRANS FX330
www.siemens.com/flow
05/2016 - A5E36751269-AA
2.2.9 Net heat quantity calculation (optional)
When measuring the net heat, the energy consumption of steam and hot water can be exactly
determined. To do this, the vortex flowmeter is built into the inlet run of the plant component to
be measured. An additional temperature sensor is installed in the return flow and then
connected to the signal converter, either via an additional current input or via HART
®
.
The measuring device can now determine the gross heat and measure the net heat from the
temperature difference determined by the second temperature sensor.
Figure 2-6: Measuring heat difference
1
Flowmeter with built-in temperature sensor
2
Temperature sensor
3
Heat exchanger
4
Heat flow
INFORMATION!
Net heat quantity calculation is an optional feature which can be unlocked in menu "C6.3 Extras".
Please contact the manufacturer to obtain the four digit code required to enable this feature.
For programming examples refer to Net heat measurement on page 85.