DEVICE DESCRIPTION
2
17
SITRANS FX330
www.siemens.com/flow09/2018 - A5E40861058-AB
2.8 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
For the compact versions, the intrinsically safe flow sensor circuits are designed as internal
circuits.
For 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, flow sensor circuit (terminal 1 to 7, colour-coded)
Remote signal converter, flow sensor circuit (terminal 1 to 7, colour-coded)Remote signal converter, flow sensor circuit (terminal 1 to 7, colour-coded)
Remote signal converter, flow sensor circuit (terminal 1 to 7, colour-coded)
U
o
=6.65V; I
o
= 1107 mA; P
o
= 650 mW; C
o
=1.5µF; L
o
=73µ H
Remote flow sensor (terminal 1 to 7, colour-coded)
Remote flow sensor (terminal 1 to 7, colour-coded)Remote flow sensor (terminal 1 to 7, colour-coded)
Remote flow sensor (terminal 1 to 7, colour-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 for the interconnection between the flow sensor an the signal
converter is not necessary, if the cable length does not exceed 50 m / 164 ft and the supplied
cable is used.
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