2
DEVICE DESCRIPTION
14
SITRANS FX330
www.siemens.com/flow 08/2017 - A5E42667474-AA EN
2.7 Electrical data
Signal circuits
Signal circuitsSignal circuits
Signal circuits
The vortex flowmeter signal circuits may only be connected to circuits with the following
maximum values. A safety value of U
m
= 253 V is considered for the power supply units.
Flow sensor circuits
Flow sensor circuitsFlow sensor circuits
Flow sensor circuits
With the compact device, the intrinsically safe flow sensor circuits are designed as internal
circuits.
When it comes to the remote versions, the intrinsically safe flow sensor circuits are led through.
The maximum permissible safety values of the flow sensor circuits are listed below:
Remote signal converter, sensor circuit (terminal 1 to 7, color coded)
Remote signal converter, sensor circuit (terminal 1 to 7, color coded)Remote signal converter, sensor circuit (terminal 1 to 7, color coded)
Remote signal converter, sensor circuit (terminal 1 to 7, color coded)
U
o
=6.65V; I
o
= 1107 mA; P
o
= 650 mW; C
o
=1.5µF; L
o
=73µH
Remote flow sensor (terminal 1 to 7, color coded)
Remote flow sensor (terminal 1 to 7, color coded)Remote flow sensor (terminal 1 to 7, color coded)
Remote flow sensor (terminal 1 to 7, color coded)
U
i
=7V; I
i
= 1107 mA; P
i
= 650 mW; C
i
=0; L
i
=0
Device version Circuit
Terminals
Nominal voltage Nominal current
SITRANS FX330
SITRANS FXT030
4...20 mA version
Current output 4...20 mA
C1, C2
12...32 VDC 4...20 mA
Binary output
M1, M2, M3, M4
8...32 VDC ≤100 mA
Current input
I1, I2
9...32 VDC 4...20 mA
SITRANS FX330
SITRANS FXT030
Foundation Fieldbus version
1
Bus connection
A1, A2
B1, B2
9...32 VDC 20 mA
SITRANS FX330
SITRANS FXT030
Profibus PA version 2
1 Further information for operation of the FF transmitter are provided in separate supplementary instructions.
2 Further information for operation of the PA transmitter are provided in separate supplementary instructions.
INFORMATION!
The verification of intrinsic safety is not necessary for the interconnection of vortex flow sensor
connected to the signal converter, if the cable length doesn't exceed 50 m / 164 ft using the
supplied cable.
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