Vega VEGABAR 83 Operating Instructions Manual page 81

The basic temperature error in % from the above graphic can increase due to the additional factors
such as accuracy class (factor FMZ) and Turn Down (factor FTD). The additional factors are listed
in the following tables.
Additional factor through accuracy class
Accuracy class
Factor FMZ
Additional factor through Turn Down
The additional factor FTD through Turn down is calculated according to the following formula:
F = 0.5 x TD + 0.5
TD
In the table, example values for typical Turn downs are listed.
Turn Down TD 1 : 1
Factor FTD 1
Ceramic/Metal measuring cell - Standard
-12
Fig. 47: Basic temperature error F
The basic temperature error in % from the above graphic can increase due to the additional factors,
depending on the measuring cell version (factor FMZ) and the Turn Down (factor FTD). The ad-
ditional factors are listed in the following tables.
Additional factor through measuring cell version
Measuring cell version
Factor FMZ
Additional factor through Turn Down
VEGABAR 83 • 4 ... 20 mA/HART
In the compensated temperature range of 10 ... +70 °C
0.075 %, 0.1 %
1
TD 2.5 : 1
1.75
at TD 1 : 1
TBasis
0.075 %, 0.1 %
1
0.2 %
3
TD 5 : 1 TD 10 : 1
3 5.5
Measuring cell - Standard
0.2 %
3
12 Supplement
TD 20 : 1
10.5
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