VEGA VEGABAR 74 4 … 20 mA_HART - Manual (Page 29)

Nominal range Overload, max. pres-
sure6) Overload, min. pressure
-0.2 … 0.2 bar/-20 … 20 kPa 30 bar/3000 kPa -0.8 bar/-80 kPa
-0.5 … 0.5 bar/-50 … 50 kPa 35 bar/3500 kPa -1 bar/-100 kPa
A bsolute pressure
0 … 0.1 bar/0 … 10 kPa 15 bar/1500 kPa
0 … 1 bar/0 … 100 kPa 35 bar/3500 kPa
0 … 2.5 bar/0 … 250 kPa 50 bar/5000 kPa
0 … 5 bar/0 … 500 kPa 65 bar/6500 kPa
0 … 10 bar/0 … 1000 kPa 90 bar/9000 kPa
0 … 25 bar/0 … 2500 kPa 130 bar/13000 kPa
0 … 60 bar/0 … 6000 kPa 200 bar/20000 kPa
Reference conditions and influencing variables (similar to DIN EN 60770-1)
R
eference conditions according to DIN EN 61298-1
-
T
emperature + 15 … +25 °C (+59 … +77 °F)
-
R
elative humidity 45 … 75 %
-
A ir pressure 860 … 1060 mbar/86 … 106 kPa
(12.5 … 15.4
psi)
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 < 0.2 mbar/20 Pa (0.003 psi)
Deviation determined according to the limit point method according to IEC 60770 7 )
A pplies to digital HART interface as well as to analogue current output 4 … 20 mA.
S
pecifications refer to the set span. Turn down (TD) = nominal measuring range/set span.
D eviation
-
T urn down 1:1 up to 5:1 < 0.075 %
-
T
urn down up to 10:1 < 0.015 % x TD
D
eviation with absolutely flush process fittings EV, FT
-
T urn down 1:1 up to 5:1 < 0.05 %
-
T urn down up to 10:1 < 0.01 % x TD
7) I ncl. non-linearity, hysteresis and non-repeatability.
S upplement
VEGABAR 74 - 4 … 20 mA/HART 29
28432
-
EN
-070718