Vega VEGABAR 52 Operating Instructions Manual page 54

10 Supplement
Output variable
Output signal
HART output values according to HART standard 5.0
Primary Value
-
Secondary Value
-
Signal resolution
Failure signal current output (adjustable)
Max. output current
Load
Fulfilled NAMUR recommendations
Dynamic behaviour output
Run-up time approx.
100 %
90 %
10 %
Fig. 27: Sudden change of the process variable. t
1
Process variable
2
Output signal
Dead time
Rise time
Step response time
Damping (63 % of the input variable)
Additional output parameter - temperature
Processing is made via output signal HART multidrop, Profibus PA and Foundation Fieldbus
Range
Resolution
54
4 ... 20 mA/HART
Pressure
Temperature
1.6 µA
mA-value unchanged 20.5 mA, 22 mA, < 3.6 mA
22 mA
see load diagram under Power supply
NE 43
10 s
1 2
t
t
T A
t
S
: dead time; t
T
≤ 150 ms
≤ 100 ms (10 ... 90 %)
≤ 250 ms (ti: 0 s, 10 ... 90 %)
0 ... 999 s, adjustable
-50 ... +150 °C (-58 ... +302 °F)
1 °C (1.8 °F)
Depending on the respective instrument and the process fitting, the tem-
10)
perature can deviate from the real process temperature.
10)
t
: rise time; t : jump response time
A S
VEGABAR 52 • 4 ... 20 mA/HART