2 overview applications/functionality – VEGA VEGAMET 391 4 … 20 mA_HART User Manual
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11 Supplement
VEGAMET 391 • 4 … 20 mA/HART
36032-EN-130701
Protection class
II
Electrical separating measures
Reliable separation according to VDE 0106 part 1 between power supply, input and digital compo-
nent
Ʋ Reference voltage
250 V
Ʋ Voltage resistance of the isolation
3.75 kV
Galvanic separation between relay output and digital part
Ʋ Reference voltage
250 V
Ʋ Voltage resistance of the isolation
4 kV
Potential separation between Ethernet interface and digital part
Ʋ Reference voltage
50 V
Ʋ Voltage resistance of the isolation
1 kV
Potential separation between RS232 interface and digital part
Ʋ Reference voltage
50 V
Ʋ Voltage resistance of the isolation
50 V
Approvals
Instruments with approvals can have different technical data depending on the version.
For that reason the associated approval documents of these instruments have to be carefully
noted. They are part of the delivery or can be do via "VEGA Tools"
and "serial number search" as well as via "Downloads" and "Approvals".
11.2 Overview applications/functionality
The following charts provide an overview of the standard applications and functions of signal condi-
tioning instruments VEGAMET 391/624/625 and VEGASCAN 693. They also give information about
whether the respective function can be activated and adjusted via the integrated indicating and
adjustment unit (OP) or via PACTware/DTM.
Application/Function
391
624
625
693
OP
3)
DTM
Level measurement
•
•
•
•
•
•
Process pressure measurement
•
•
•
•
•
•
Differential measurement
-
-
•
-
•
•
Interface measurement
-
-
•
-
•
•
Pressurized vessel
-
-
•
-
-
•
Pump control
•
•
•
-
•
4)
•
Totalizer
•
-
-
-
-
•
Tendency recognition
•
•
•
-
-
•
Flow measurement
•
•
•
-
-
•
Simulation sensor value/%-value/lin-%-value
•
•
•
•
•
•
Simulation scaled values
•
•
•
•
-
•
Live adjustment
•
•
•
•
•
-