VEGA VEGABAR 65 4 … 20 mA_HART - Manual (Page 55)

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
Input variable
Adjustment
A
djustment range of the min./max. adjustment relating to the nominal measuring range:
-
percentage value
-10 … 110 %
-
pressure value -20 … 120 %
VEGABAR 65 • 4 … 20 mA/HART 55
10 S upplement
27531
-
EN
-081209