VEGA VEGABAR 61 4 … 20 mA_HART - Manual (Page 58)

Nominal range Overload, max. pressure Overload, min. pressure
0 … 25 bar/0 … 2500 kPa 130 bar/13000 kPa 0 bar abs.
0 … 60 bar/0 … 6000 kPa 200 bar/20000 kPa 0 bar abs.
0 … 100 bar/0 … 10 MPa 200 bar/20000 kPa 0 bar abs.
0 … 400 bar/0 … 40 MPa 800 bar/80000 kPa 0 bar abs.
Reference conditions and actuating variables (similar to DIN EN 60770-1)
R eference conditions according to DIN EN 61298-1
-
T emperature + 18 … +30 °C (+64 … +86 °F)
-
R elative humidity 45 … 75 %
-
A ir pressure 860 … 1060 mbar/86 … 106 kPa (12.5 … 15.4 psig)
D etermination of characteristics L imit point adjustment according to IEC 61298-2
C
haracteristics linear
R eference installation position upright, diaphragm points downward
I nfluence of the installation position depending on the isolating diaphragm version
Deviation determined according to the limit point method according to IEC 60770 10)
A pplies to digital interfaces (HART, Profibus PA, Foundation Fieldbus) as well as to analogue
current output 4 … 20 mA. Specifications refer to the set span. Turn down (TD) is the relation
nominal measuring range/set span.
D eviation
-
T urn down 1 : 1 up to 5 : 1 < 0.1 %
-
T urn down > 5 : 1
< 0.02 % x TD
D eviation with absolute pressure measuring range 0.1 bar
-
T urn down 1 : 1 up to 5 : 1 < 0.25 %
-
T urn down > 5 : 1
< 0.05 % x TD
Influence of the product or ambient temperature
A pplies to instruments with digital signal output (HART, Profibus PA, Foundation Fieldbus) as well
as to instruments with analogue current output 4 … 20 mA. Specifications refer to the set span.
T
urn down (TD) = nominal measuring range/set span.
T hermal change zero zignal, reference temperature 20 °C (68 °F):
-
I n the compensated temperature range
0 … +100 °C (+32 … +212 °F)
< 0.05 %/10 K x TD
-
O utside the compensated temperature
range
typ. < 0.05 %/10 K x TD
A pplies also to instruments with analogue 4 … 20 mA current output and refers to the set span.
T
hermal change, current output
< 0.15 % at -40 … +80 °C (-40 … +176 °F)
10) I ncl. non-linearity, hysteresis and non-repeatability.
58 VEGABAR 61 • 4 … 20 mA/HART
10 S upplement
27519
-EN
-081209