VEGA VEGADIF 34 … 51 User Manual

Page 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

Feature

Accuracy

Instrument

hysteresis

repeatability

VEGADIF 34

better than 0.1 %

better than 0.05 %

VEGADIF 35

better than 0.1 %

VEGADIF 44

better than 0.1 %

better than 0.05 %

VEGADIF 45

better than 0.2 %

better than 0.1 %

VEGADIF 51

better than 0.2 %

better than 0.1 %

Log-term stability of the zero signal

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)

Similar to DIN 16 086

Relating to the nominal measuring range with recommended turn-down of 20 : 1

Relating to the nominal measuring range, reference temperature 25°C, with recommended turn-down limit of
20 : 1

with VEGADIF 45 and 51 without isolating diaphragm or capillaries, see Temperature influence

Relating to the nominal measuring range

with silicon measuring cell measured on the 6000 mbar sensor