KROHNE OPTISWIRL 5080, Supplementary Instructions Manual

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2
DEVICE DESCRIPTION
10
OPTISWIRL 5080
www.krohne.com 07/2020 - 4008054001 - AD OPTISW5080 Exd Gb-Db en R01
2.6 Electrical data
Signal circuits Signal circuits Signal circuits Signal circuits
The vortex flowmeter signal circuits may only be connected to circuits with the following values
per circuit:
Flow sensor circuits Flow sensor circuits Flow 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
by the connected sensor cable.
If the sensor cable must be disconnected (to shorten the cable, run the cable through conduit, or
for some other reason), you must disconnect the cable at the sensor junction box end. You
cannot disconnect the cable at the signal converter electronics end because it has been epoxied
into the metal connector. It is labeled
“
Factory Sealed / Electronics End / Do Not Remove.
”
Nominal values
Signal circuit
Terminals U
N
(external supply)
I
N
U
m
(safety value)
Current output 4...20 mA
HART
®
+, -
15.5...42 VDC 4...20 mA 250 V
rms
Pulse output
+, -
5...30 VDC < 100 mA
1
250 V
rms
Table 2-4: Maximum values for signal circuits
1
Limitation by an external load required
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 15 m / 50 ft using the
connected sensor cable.