VEGA VEGABAR 83 HART and accumulator pack - Operating Instructions User Manual

Page 56

11 Supplement

VEGABAR 83 • HART and accumulator pack

45035-EN-131107

The deviation corresponds to the value F

in chapter "Calculation of the total deviation". The value

results out of the accuracy class and the respective turn down.

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

0.075 %

< 0.075 %

< 0.015 % x TD

0.1 %

< 0.1 %

< 0.02 % x TD

0.2 %

< 0.2 %

< 0.04 % x TD

Influence of the product or ambient temperature
Thermal change zero signal and output span
Applies to the digital signal output (HART, Profibus PA, Foundation Fieldbus) as well as to the

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

measuring range/set span.
The thermal change of zero signal and output span corresponds to the value F

in chapter "Calcu-

lation of the total deviation (according to DIN 16086)".
Piezoresistive/strain gauge measuring cell

Turn down

In the compensated tem-

perature range 10 … +70 °C

(+50 … +158 °F)

Outside the compensated tem-

perature range

TD 1 : 1

< 0.05 %/10 K

typ. < 0.05 %/10 K

TD 1 : 1 up to 5 : 1

< 0.1 %/10 K

TD up to 10 : 1

< 0.15 %/10 K

Ceramic/Metal measuring cell - Standard

Medium or ambient tempera-

ture T

Accuracy class 0.1 %

Accuracy class 0.2 %

-40 … 0 °C (-40 … +32 °F)

< {0.15 % + 0.015 %/K x (-T)} x

{0.5+0.5 x TD}

< {0.1 % + 0.03 %/K x (-T)} x

{0.5+0.5 x TD}

0 … 40 °C (+32 … +104 °F)

< {0.0075 %/K x (T - 20 °C)} x

{0.5+0.5 x TD}

< {0.005 %/K x (T - 20 °C)} x

{0.5+0.5 x TD}

40 … 100 °C (+104 … +212 °F)

< {0.15 % } x {0.5+0.5 x TD}

< {0.005 %/K x (T - 20 °C)} x

{0.5+0.5 x TD}

100 … 120 °C (+212 … +248 °F)

< {0.15 % + 0.005 %/K x (T -

100 °C)} x {0.5+0.5 x TD}

< {0.40 % + 0.01 %/K x (T - 100 °C)}

x {0.5+0.5 x TD}

Ceramic/Metal measuring cell - climate-compensated
Compensated temperature range

0 … +100 °C (+32 … +212 °F)

Non-compensated temperature range

-40 … 0 °C (-40 … +32 °F), -100 … 130 °C

(212 … +276 °F)