Siemens SITRANS FX330 - Net heat measurement (optional)

2 DEVICE DESCRIPTION
22
SITRANS FX330
www.siemens.com/flow 08/2022 - A5E36751269-AG EN
2.2.9 Net heat measurement (optional)
By installing a vortex flowmeter in the inlet line of a particular system section and adding an
additional temperature sensor in the return section, the amount of energy, which is consumed
by the considered system section can be determined directly by the vortex flowmeter.
The temperature value can be fed into the vortex flowmeter either via the current input or via
HAR
T
®
.
Figure 2-7: Measuring heat difference
1 Flowmeter with built-in temperature sensor
2
Temperature sensor
3
Heat exchanger
4
Heat flow
INFORMATION!
• The net heat measurement can be realised for the inlet line media saturated steam,
superheated steam and hot water. The medium in the return line must always be water.
• Heat quantity calculation is an optional feature, which can be unlocked subsequently in menu
"C6.3 Extras" if not unlocked by order. 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 91
.