VEGA VEGADIF 34 … 51 - Manual (Page 12)

12 VEGADIF 34 … 51
20094-EN-030731
Product description
Minimum pressure
VEGADIF 34, 35 and 44 1 mbar
abs
VEGADIF 45 and 51 10 mbar
abs
Output characteristics
Determination of characteristics fixed point method acc. to VDI/VDE 2600, sheet 4
(corresponds to the limit point adjustment acc. to
DIN 16 086)
Characteristics linear (differential pressure proportional),
changeable to square root (flow proportional)
Accuracy data 1)
Feature Accuracy 2) Share Share
Instrument hysteresis repeatability
VEGADIF 34 better than 0.1 % better than 0.05 % better than 0.05 %
VEGADIF 35 better than 0.1 % better than 0.1 % better than 0.1 %
VEGADIF 44 better than 0.1 % better than 0.05 % better than 0.05 %
VEGADIF 45 better than 0.2 % better than 0.1 % better than 0.1 %
VEGADIF 51 better than 0.2 % better than 0.1 % better than 0.1 %
Log-term stability of the zero signal 3) better than 0.1 %/12 months (VEGADIF 34 a. 44)
better than 0.2 %/12 months (VEGADIF 35,45,51)
Influence of other actuating variables
Influence of the static pressure
on zero and span
better than 0.2 %/PN (VEGADIF 34 and 44)
better than 0.2 %/100 bar (VEGADIF 35, 45, 51)
Electromagnetic compatibility (EMC) interference immunity acc. to NAMUR: 30 V/m
Influence of vibration 5) 6) better than ±0.1 % acc. to DIN/IEC 68, part 2 - 6
Climatic class GPC acc. to DIN 40 040
Calibration position upright
Influence of the mounting position max. 2 mbar
Temperature influence
Average temperature influence coefficient
of the zero signal
3) 4) or the output span better than 0.02 %/10 K (+10 … +60°C)
better than 0.1 %/10 K (-40 … +10°C a.
60°C…85°C)
1) Similar to DIN 16 086
2) Relating to the nominal measuring range with recommended turn-down of 20 : 1
3) Relating to the nominal measuring range, reference temperature 25°C, with recommended turn-down limit of
20 : 1
4) with VEGADIF 45 and 51 without isolating diaphragm or capillaries, see Temperature influence
5) Relating to the nominal measuring range
6) with silicon measuring cell measured on the 6000 mbar sensor