Vega VEGABAR 55 Foundation Fieldbus - climate compensat Bedienungsanleitung PDF herunterladen (Seite 49)

10 Supplement

VEGABAR 55 • Foundation Fieldbus - climate compensated

39443-EN-130321

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

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

Applies to digitalinterfaces(HART,ProbusPA,FoundationFieldbus)aswellastoanalogue

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

range/set span.

Nominalmeasuringrangein

bar/kPa

Nominal

measuring

range in psig

Average temperature coef-

cientofthezerosignal,in

the compensated temper-

ature range 0 … +100 °C

(+32…+212°F),reference

temperature20°C(68°F)

Average temperature co-

ecientofthezerosignal,

outside the compensated

temperature range

0 … 0.2 bar/0 … 20 kPa 0 … 3 psig < (0.05 + 0.05 x TD)%/10K < (0.05 + 0.1 x TD)%/10K

0 … 0.4 bar/0 … 40 kPa 0 … 6 psig < (0.05 + 0.05 x TD)%/10K < (0.05 + 0.1 x TD)%/10K

0 … 1 bar/0 … 100 kPa 0 … 15 psig < (0.02 + 0.05 x TD)%/10K < (0.02 + 0.1 x TD)%/10K

0 … 2.5 bar/0 … 250 kPa 0 … 35 psig < (0.02 + 0.05 x TD)%/10K < (0.02 + 0.1 x TD)%/10K

0 … 5 bar/0 … 500 kPa 0 … 70 psig < (0.02 + 0.03 x TD)%/10K < (0.04 + 0.06 x TD)%/10K

0 … 10 bar/0 … 1000 kPa 0 … 150 psig < (0.02 + 0.03 x TD)%/10K < (0.04 + 0.06 x TD)%/10K

0 … 25 bar/0 … 2500 kPa 0 … 350 psig < (0.02 + 0.03 x TD)%/10K < (0.04 + 0.06 x TD)%/10K

-1 … 0 bar/-100 … 0 kPa -15 … 0 psig < (0.02 + 0.03 x TD)%/10K < (0.04 + 0.06 x TD)%/10K

-1 … 1.5 bar/-100 … 150 kPa -15 … 25 psig < (0.02 + 0.03 x TD)%/10K < (0.04 + 0.06 x TD)%/10K

-1 … 5 bar/-100 … 500 kPa -15 … 70 psig < (0.02 + 0.03 x TD)%/10K < (0.04 + 0.06 x TD)%/10K

-1 … 10 bar/-100 … 1000 kPa -

15 … 150 psig

< (0.02 + 0.03 x TD)%/10K < (0.04 + 0.06 x TD)%/10K

-1 … 25 bar/-100 … 2500 kPa -

15 … 350 psig

< (0.02 + 0.03 x TD)%/10K < (0.04 + 0.06 x TD)%/10K

-0.1 … 0.1 bar/-10 … 10 kPa -

1.5 … 1.5 psig

< (0.05 + 0.05 x TD)%/10K < (0.05 + 0.1 x TD)%/10K

-0.2 … 0.2 bar/-20 … 20 kPa -3 … 3 psig < (0.05 + 0.05 x TD)%/10K < (0.05 + 0.1 x TD)%/10K

-0.5 … 0.5 bar/-50 … 50 kPa -7 … 7 psig < (0.05 + 0.05 x TD)%/10K < (0.02 + 0.1 x TD)%/10K

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)

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Vega VEGABAR 55 Foundation Fieldbus - climate compensat Bedienungsanleitung Seite 49

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