Vega VEGABAR 54 Profibus PA Bedienungsanleitung PDF herunterladen (Seite 47)

10 Supplement

VEGABAR 54 • Probus PA

36729-EN-130321

Nominalrange Overload capacity, max.

pressure

Overload capacity, min. pres-

sure

0 … 900 psi 2900 psi 0 psi

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

10)

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 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

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

Averagetemperaturecoecientofthezerosignal

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.

In the compensated temperature range 0 … +100 °C (+32 … +212 °F), reference temperature

20 °C (68 °F).

Average temperature coecient zero signal

Ʋ Turn down 1 : 1 < 0.05 %/10 K

Ʋ Turn down 1 : 1 up to 5 : 1 < 0.1 %/10 K

Ʋ Turn down up to 10 : 1 < 0.15 %/10 K

Outside the compensated temperature range:

Average temperature coecient zero signal

Ʋ Turn down 1 : 1 typ. < 0.05 %/10 K

Thermal change of the current output

Applies also to the analogue

4 … 20 mA current output and refers to the set span.

Thermal change, current output < 0.05 %/10 K, max. < 0.15 %, each with -40 … +80 °C

(-40 … +176 °F)

10)

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

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