VEGA VEGADIF 65 4 … 20 mA - Manual (Page 73)

73
10 Supplement
VEGADIF 65 • 4 … 20 mA
36236-EN-130417
Tantalum diaphragm
Measuring cell 10 mbar 30 mbar 100 mbar 500 mbar
Influence of the sys-
tem pressure to the
zero point
±0.28 % of
URL/7 bar
±0.70 % of
URL/70 bar
±0.42 % of
URL/70 bar
±0.14 % of
URL/70 bar
Influence of the sys-
tem pressure to the
span
±0.28 % of
URL/7 bar
±0.70 % of
URL/70 bar
±0.42 % of
URL/70 bar
±0.14 % of
URL/70 bar
Measuring cell 3 bar 16 bar 40 bar
Influence of the system
pressure to the zero point
±0.14 % of URL/7 bar ±0.14 % of URL/70 bar ±0.14 % of URL/70 bar
Influence of the system
pressure to the span
±0.14 % of URL/7 bar ±0.14 % of URL/70 bar ±0.14 % of URL/70 bar
Total accuracy
Total Performance - Basic version
The specification "Total Performance" comprises non-linearity incl. hysteresis and non-repeatability,
thermal change of the zero point and static pressure influence (p
st
= 70 bar).
Total Performance
Ʋ 316L, Alloy, gold-rhodium diaphragm ±0.15 % of the set span 13)14)
Ʋ Tantalum diaphragm ±0.30 % of the set span 15)16)
Total Error - basic version
The specification "Total Error" comprises the longterm stability and the total performance.
Diaphragm material Measuring range Total Error
316L, Alloy, gold rhodium < 500 mbar 0.33 % of the measuring range end
value/year
from 500 mbar 0,20 % of the measuring range fi-
nal value
Tantalum < 500 mbar 0.48 % of the measuring range end
value/year
from 500 mbar 0.35 % of the measuring range end
value/year
Heating time - all versions
Warm-up time
≤ 10 s
Long-term stability (according to DIN 16086 and IEC 60770-1)
Applies to digital interfaces (HART, Profibus PA, Foundation Fieldbus) as well as to analogue cur-
rent output 4 … 20 mA. Specifications refer to the measuring range final value.
Measuring ranges 1 year 5 years
10 mbar, 100 mbar ±0.18 % -
13) For measuring ranges ≥ 500 mbar to TD 2 : 1
14) All specifications apply to the temperature range +10 … +60 °C (+50 … +140 °F).
15) For measuring ranges ≥ 500 mbar to TD 2 : 1
16) All specifications apply to the temperature range +10 … +60 °C (+50 … +140 °F).