VEGA VEGABAR 61 Foundation Fieldbus - Manual (Page 56)

Nominal range Overload, max. pressure Overload, min. pressure
0 … 2.5 bar/0 … 250 kPa 50 bar/5000 kPa 0 bar abs.
0 … 5 bar/0 … 500 kPa 65 bar/6500 kPa 0 bar abs.
0 … 10 bar/0 … 1000 kPa 90 bar/9000 kPa 0 bar abs.
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)
Reference conditions according to DIN EN 61298-1
-
Temperature + 18 … +30 °C (+64 … +86 °F)
-
Relative humidity 45 … 75 %
-
Air pressure 860 … 1060 mbar/86 … 106 kPa (12.5 … 15.4 psig)
Determination of characteristics Limit point adjustment according to IEC 61298-2
Characteristics linear
Reference installation position upright, diaphragm points downward
Influence of the installation position depending on the isolating diaphragm version
Deviation determined according to the limit point method according to IEC 60770 12)
Applies 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.
Deviation
-
Turn down 1 : 1 up to 5 : 1 < 0.1 %
-
Turn down > 5 : 1 < 0.02 % x TD
Deviation with absolute pressure measuring range 0.1 bar
-
Turn down 1 : 1 up to 5 : 1 < 0.25 %
-
Turn down > 5 : 1 < 0.05 % x TD
Influence of the product or ambient temperature
Applies 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.
Turn down (TD) = nominal measuring range/set span.
12) Incl. non-linearity, hysteresis and non-repeatability.
56 VEGABAR 61 • Foundation Fieldbus
10 Supplement
28258
-EN
-081209