Vega VEGABAR 52 4 … 20 mA_HART - climate compensated Bedienungsanleitung PDF herunterladen (Seite 54)

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VEGABAR 52 • 4 … 20 mA/HART - climate compensated

36718-EN-130321

Nominalmeasuringrangein

bar/kPa

Nominal

measuring

range in psig

Average temperature co-

ecientofthezerosignal

and the output span, in

the compensated temper-

ature range 0 … +100 °C

(+32…+212°F),reference

temperature20°C(68°F)

Averagetemperaturecoe-

cient of the zero signal and

the output span, outside

the compensated tempera-

ture range

-0.1 … 0.1 bar/-10 … 10 kPa -

1.5 … 1.5 psig

< (0.15 + 0.4 x TD)% < (0.15 + 0.6 x TD)%

-0.2 … 0.2 bar/-20 … 20 kPa -3 … 3 psig < (0.15 + 0.4 x TD)% < (0.15 + 0.6 x TD)%

-0.5 … 0.5 bar/-50 … 50 kPa -7 … 7 psig < (0.1 + 0.2 x TD)% < (0.1 + 0.3 x TD)%

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)

0,15 %

-0,15 %

-40°C -20°C

20°C

40°C 60°C 80°C

Fig. 28: Thermal change, current output

Long-termstability(accordingtoDIN16086andIEC60770-1)

Applies to digital HART interface as well as to analoguecurrentoutput4…20mA.Specications

refer to the set span. Turn down (TD) is the relation nominal measuring range/set span.

Nominalmeasuringrangeinbar/kPa Nominalmeasuring

range in psig

Long-term drift of the zero signal

0 … 0.2 bar/0 … 20 kPa 0 … 3 psig < (1 % x TD)/year

0 … 0.4 bar/0 … 40 kPa 0 … 6 psig < (1 % x TD)/year

0 … 1 bar/0 … 100 kPa 0 … 15 psig < (0.25 % x TD)/year

0 … 2.5 bar/0 … 250 kPa 0 … 35 psig < (0.25 % x TD)/year

0 … 5 bar/0 … 500 kPa 0 … 70 psig < (0.1 % x TD)/year

0 … 10 bar/0 … 1000 kPa 0 … 150 psig < (0.1 % x TD)/year

0 … 25 bar/0 … 2500 kPa 0 … 350 psig < (0.1 % x TD)/year

0 … 60 bar/0 … 6000 kPa 0 … 900 psig < (0.1 % x TD)/year

-1 … 0 bar/-100 … 0 kPa -15 … 0 psig < (0.25 % x TD)/year

-1 … 1.5 bar/-100 … 150 kPa -15 … 25 psig < (0.25 % x TD)/year

-1 … 5 bar/-100 … 500 kPa -15 … 70 psig < (0.1 % x TD)/year

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