Design and function
D184B097U02
FV4000 / FS4000
21
2.2
Design
G00701
x
x
+
A
A
D
D
Z
-1
2
1
3
5
4
6
7
8
9
10
11
12
13
14
Fig. 10
1 Sensor
2 Vibration
sensor
3 Flow
sensor
4 Amplifier with automatic gain control
5 Gain
control
6 Amplifier
7 A/D-D/A
converter
8 DSP
9 FIR
1)
filter algorithm and gain control
10 Serial interface
11 Frequency
12 CPU
13 Current output
14 Switching output
1) FIR = Finite Impulse Response
The flow and vibration piezo elements from the sensor deliver signals which are forwarded to
the analog-to-digital converter via an amplifier. A gain control mechanism in the DSP controls
gain via the D/A converter. Gain control is used to adapt the necessary signal gain dynamically.
The filter algorithm in the DSP evaluates the signals, picks up the flow signal and sends this
frequency to the CPU for conversion into flow units. This data is then shown on the display and
transmitted on the current and switching outputs or via fieldbus communication.
Summary of Contents for FS4000
Page 1: ...Operating Instruction D184B097U02 Vortex Flowmeter Swirl Flowmeter FV4000 FS4000 ...
Page 116: ...Appendix 116 FV4000 FS4000 D184B097U02 ...
Page 117: ...Appendix D184B097U02 FV4000 FS4000 117 ...
Page 118: ...Appendix 118 FV4000 FS4000 D184B097U02 ...
Page 119: ...Appendix D184B097U02 FV4000 FS4000 119 ...
Page 120: ...Appendix 120 FV4000 FS4000 D184B097U02 ...
Page 125: ......
