VEGA VEGABAR 83 HART and accumulator pack - Operating Instructions User Manual
Page 56
56
11 Supplement
VEGABAR 83 • HART and accumulator pack
45035-EN-131107
The deviation corresponds to the value F
Kl
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
T
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)