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Digital signal processing (DSP)
The analog to digital conversion takes place in an ultra low noise sigma delta converter with
high signal resolution. With fast digital signal processing mass flow and density values are
calculated using a patented DFT technology (Discrete Fourier Transformation). The
combination of this patented DFT technology and the fast DSP enables short response time (<
10 ms) to changes in the measured values.
The built-in noise filter is configurable and can be used for improving the performance of the
flowmeter, in case the installation and application conditions are not ideal. Typical process
noise such as gas bubbles (two-phase-flow) can be reduced through the filter functions.
A.2
Sensor dimension dependent default settings
A.2.1
Mass flow: Sensor dimension dependent default settings (Process values)
Mass flow
Sensor dimension
Default value
kg/s
Range
Lower warning limit
DN 15
-2.22
DN 25
-9.72
DN 50
-25
DN 80
-69.44
DN 100
-144.44
DN 150
-238.89
Lower alarm limit
DN 15
-2.22
-8.84 to +8.84
DN 25
-9.72
-24.5 to +24.5
DN 50
-25
-98.2 to +98.2
DN 80
-69.44
-251 to +251
DN 100
-144.44
DN 150
-238.89
Sensor dimension
Default value
kg/s
Range
Upper warning limit
DN 15
2.22
DN 25
9.72
DN 50
25
DN 80
69.44
Technical reference
A.2 Sensor dimension dependent default settings
SITRANS FC330
226
Operating Instructions, 01/2019, A5E44030648-AB
Содержание SITRANS FC330
Страница 14: ...Introduction 1 8 Notes on warranty SITRANS FC330 14 Operating Instructions 01 2019 A5E44030648 AB ...
Страница 56: ...Installing mounting 4 3 Disassembly SITRANS FC330 56 Operating Instructions 01 2019 A5E44030648 AB ...
Страница 126: ...Operating 7 2 Remote operation SITRANS FC330 126 Operating Instructions 01 2019 A5E44030648 AB ...
Страница 158: ...Parameter assignment 8 2 Functions SITRANS FC330 158 Operating Instructions 01 2019 A5E44030648 AB ...
Страница 216: ...Technical data 11 13 Pressure temperature ratings SITRANS FC330 216 Operating Instructions 01 2019 A5E44030648 AB ...
Страница 224: ...Dimension drawings 12 7 Mounting bracket dimensions SITRANS FC330 224 Operating Instructions 01 2019 A5E44030648 AB ...
Страница 236: ...HART communication B 1 Mode of operation HART function SITRANS FC330 236 Operating Instructions 01 2019 A5E44030648 AB ...
Страница 274: ...Zero point adjustment SITRANS FC330 274 Operating Instructions 01 2019 A5E44030648 AB ...
Страница 280: ...Index SITRANS FC330 280 Operating Instructions 01 2019 A5E44030648 AB ...