Vega VEGABAR 52 Profibus PA Bedienungsanleitung PDF herunterladen (Seite 43)

10 Supplement

VEGABAR 52 • Probus PA

36719-EN-130321

Referenceconditionsandactuatingvariables(accordingtoDINEN60770-1)

Reference conditions according to DIN EN 61298-1

Ʋ Temperature +15 … +25 °C (+59 … +77 °F)

Ʋ Relative humidity 45 … 75 %

Ʋ Air pressure 860 … 1060 mbar/86 … 106 kPa (12.5 … 15.4 psig)

Determination of characteristics Limit point adjustment according to IEC 61298-2

Characterstic curve Linear

Reference installation position upright, diaphragm points downward

Inuence of the installation position

< 0.2 mbar/20 Pa (0.003 psig)

Deviation determined according to the limit point method according to IEC 60770

Applies to the digital signal output (HART, Probus PA, Foundation Fieldbus) as well as to ana-

logue current output 4 … 20 mA and refers to the set span. Turn down (TD) is the ratio nominal

measuring range/set span.

Deviation with absolutely ush process ttings EV, FT

Ʋ Turn down 1 : 1 up to 5 : 1 < 0.05 %

Ʋ Turn down > 5 : 1 < 0.01 % x TD

Deviation with version 0.075 %

Ʋ Turn down 1 : 1 up to 5 : 1 < 0.075 %

Ʋ Turn down > 5 : 1 < 0.015 % x TD

Deviation with version 0.1 %

Ʋ Turn down 1 : 1 up to 5 : 1 < 0.1 %

Ʋ Turn down > 5 : 1 < 0.02 % x TD

Deviation with version 0.2 %

Ʋ Turn down 1 : 1 up to 5 : 1 < 0.2 %

Ʋ Turn down > 5 : 1 < 0.04 % x TD

Deviation with absolute pressure measuring range 0.1 bar

Ʋ Turn down 1 : 1 up to 5 : 1 < 0.25 %

Ʋ Turn down > 5 : 1 < 0.05 % x TD

Inuenceoftheproductorambienttemperature

Thermal change zero signal and output span

Applies to the digital signal output (HART, Probus PA, Foundation Fieldbus) as well as to ana-

logue

current output 4 … 20 mA and refers to the set span. Turn down (TD) is the ratio nominal

measuring range/set span.

Thermal change zero signal and output span, reference temperature 20 °C (68 °F):

Ʋ In the compensated temperature

range 0 … +100 °C (+32 … +212 °F)

< (0.05 % + 0.1 % x TD)

Ʋ Outside the compensated tempera-

ture range

< (0.05 % + 0.15 % x TD)

Thermal change zero signal and output span with absolute pressure measuring range 0.1 bar,

reference temperature 20 °C (68 °F):

Incl. non-linearity, hysteresis and non-repeatability.

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