Vega VEGADIF 65 Operating Instructions Manual page 69

4 ... 20 ma differential pressure transmitter with metallic measuring diaphragm
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Max. torque screws mounting strap
Max. torque screws socket external
housing
Weight approx.
Output variable
Output signal
Signal resolution
Failure signal output current
Max. output current
Load
Met NAMUR recommendation
Dynamic behaviour output
Run-up time
Fig. 51: Presentation of the dead time t
The following specified total dead time applies to the 4 ... 20 mA current output:
Version, nominal measuring range
Basic version 10 bar and 30 bar
Basic version 100 mbar
Basic version 500 mbar
Basic version, 3 bar
Basic version 16 bar and 40 bar
Chemical seal version, all nominal measuring ranges
Damping (63 % of the input variable)
Input variable
Measured variable
Adjustment differential pressure
VEGADIF 65 • 4 ... 20 mA
30 Nm
5 Nm (3.688 lbf ft)
4.2 ... 4.5 kg (9.26 ... 9.92 lbs), depending on process
fitting
4 ... 20 mA
1.6 µA
mA value unchanged 20.5 mA, 22 mA, < 3.6 mA (adjust-
able)
22 mA
see load diagram under Power supply
NE 43
≤ 20 s
I
100 %
63 %
t
t
1
2
and the time constant t
1
0 ... 999 s, adjustable
Differential pressure, flow and level derived from it
2
Dead time t
1
100 ms
100 ms
100 ms
100 ms
100 ms
Dependent on the chemi-
cal seal
10 Supplement
t
Time constant t
2
250 ms
180 ms
180 ms
180 ms
180 ms
Dependent on the chemi-
cal seal
69

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