VEGA VEGABAR 64 4 … 20 mA_HART - Manual (Page 54)

HART output values
-
HART value (Primary Value) P rocess pressure
-
HART value (Secondary Value) T emperature
S ignal resolution 1.6 µA
F ailure signal current output (adjustable) mA-value unchanged 20.5 mA, 22 mA, < 3.6 mA
M ax. output current 22 mA
L oad see load diagram under Power supply
F ulfilled NAMUR recommendations NE 43
Dynamic behaviour output
R un-up time approx. 10 s
90 %
100 %
10 %
t
t
T A
t
t
S
2 1
Fig. 29: Sudden change of the process variable, dead time t
T
, rise time t
A
and step response time t
S
1 Process variable
2 Output signal
D ead time ≤ 150 ms
R ise time ≤ 100 ms (10 … 90 %)
S tep response time ≤ 250 ms (ti: 0 s, 10 … 90 %)
D
amping (63 % of the input variable) 0 … 999 s, adjustable
Additional output parameter - temperature
P rocessing is made via output signal HART multidrop, Profibus PA and Foundation Fieldbus
R
ange
-50 … +150 °C (-58 … +302 °F)
R esolution 1 °C (1.8 °F)
54 VEGABAR 64 • 4 … 20 mA/HART
10 S upplement
27525
-EN
-081209