Vega VEGABAR 81 Modbus and Levelmaster protocol - Opera Bedienungsanleitung PDF herunterladen (Seite 58)

10 Supplement

VEGABAR 81 • Modbus and Levelmaster protocol

46293-EN-131107

90 %

100 %

10 %

Fig. 32: Sudden change of the process variable. t

: dead time; t

: rise time; t

: jump response time

1 Process variable

2 Output signal

Dead time ≤45ms

Rise time ≤35ms(10…90%)

Step response time ≤80ms(ti:0s,10…90%)

Damping (63 % of the input variable) 0 … 999 s, adjustable

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

Reference conditions according to DIN EN 61298-1

Ʋ Temperature +18 … +30 °C (+64 … +86 °F)

Ʋ Relative humidity 45 … 75 %

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

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 depending on the chemical seal version

Deviation (according to IEC 60770)

Turn down (TD) is the relation nominal measuring range/adjusted span.

Accuracy class Non-linearity, hysteresis and re-

peatability with TD 1 : 1 up to 5 : 1

Non-linearity, hysteresis and re-

peatability with 5 : 1

0.2 % < 0.2 % < 0.04 % x TD

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

Thermal change zero signal and output span

Turn down (TD) is the relation nominal measuring range/adjusted span.

Averagetemperaturecoecient,

zero signal

In the compensated tem-

perature range 10 … +70 °C

(+50 … +158 °F)

Outside the compensated tem-

perature range

Turn down 1 : 1 < 0.05 %/10 K typ. < 0.05 %/10 K

1 2 ... 53 54 55 56 57 58 59 60 61 62 63 ... 91 92

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Vega VEGABAR 81 Modbus and Levelmaster protocol - Opera Bedienungsanleitung Seite 58

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