VEGA VEGADIF 65 4 … 20 mA - Manual (Page 72)

72
10 Supplement
VEGADIF 65 • 4 … 20 mA
36236-EN-130417
Temperature range Measuring range Thermal changes of the zero sig-
nal and the output span relating
to the adjusted span
-10 … +60 °C (+14 … +140 °F) 10 mbar, 30 mbar ±(0.31 x TD + 0.06) %
100 mbar ±(0.18 x TD + 0.02) %
500 mbar, 3 bar ±(0.08 x TD + 0.05) %
16 bar ±(0.1 x TD + 0.1) %
16 bar ±(0.08 x TD + 0.05) %
-40 … +10 °C (-40 … +50 °F)
+60 … +85 °C (+140 … +185 °F) 10 mbar, 30 mbar ±(0.45 x TD + 0.1) %
100 mbar ±(0.3 x TD + 0.15) %
500 mbar, 3 bar ±(0.12 x TD + 0.1) %
16 bar ±(0.15 x TD + 0.2) %
40 bar ±(0.37 x TD + 0.1) %
Applies also to instruments with analogue 4 … 20 mA current output and refers to the set span.
Thermal change, current output
< 0.05 %/10 K, max. < 0.15 %, each with -40 … +80 °C
(-40 … +176 °F)
0,15 %
-0,15 %
-40°C -20°C
20°C
40°C 60°C 80°C
Fig. 52: Thermal change, current output
Influence of the system pressure on the zero point and span
316L, Alloy C276-, Alloy C276 gold-rhodium coated diaphragm
Measuring cell 10 mbar 30 mbar 100 mbar 500 mbar
Influence of the sys-
tem pressure to the
zero point
±0.15 % of
URL/7 bar
±0.35 % of
URL/70 bar
±0.15 % of
URL/70 bar
±0.075 % of
URL/70 bar
Influence of the sys-
tem pressure to the
span
±0.035 % of
URL/7 bar
±0.14 % of
URL/70 bar
±0.14 % 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
±0.075 % of URL/7 bar ±0.075 % of URL/70 bar ±0.075 % 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