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DEVICE DESCRIPTION
2
2.8 Electrical data
Signal circuits
Signal circuits
Signal circuits
Signal circuits
The vortex flowmeter signal circuits may only be connected to separate, certified, intrinsically
safe isolating amplifiers or zener barriers connected to separate, intrinsically safe circuits with
the following maximum values per circuit:
Device version
VTX3 K i Ex
VTX3 W i Ex
VTX3 K FF i Ex
VTX3 W FF i Ex
VTX3 K PA i Ex
VTX3 W PA i Ex
Flow sensor circuits
Flow sensor circuits
Flow 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
= 6.65 V; I
o
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
= 7 V; I
i
i
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.
16
Circuit
Terminals
Current output 4...20 mA
C1, C2
Binary output
M1, M2, M3, M4
Current input
I1, I2
FF / Entity Model I.S.
A1, A2
B1, B2
FF / FISCO
A1, A2
B1, B2
FISCO FIELD DEVICE
FISCO
A1, A2
B1, B2
FISCO FIELD DEVICE
= 1107 mA; P
= 650 mW; C
o
o
= 1107 mA; P
= 650 mW; C
i
Maximum values
U
i
30
30
30
24
17.5
24
= 1.5 µF; L
= 73 µH
o
o
= 0; L
= 0
i
i
www.bopp-reuther.de
[V]
I
[mA] P
[W] C
i
i
130
1
100
1
130
1
250
1.2
380
5.32
380
5.32
12/2018 - Z-EN-09001-id-A Exi-Gb
VTX3
[nF] L
[μH]
i
i
10
~ 0
10
~ 0
15
~ 0
~ 0
~ 0
~ 0
~ 0
~ 0
~ 0
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