VEGA VEGABAR 20 - Manual (Page 6)

6 VEGABAR 20
Product description
NAMUR-regulations
The NAMUR-regulations NE 21, May 1993 are met.
Supply and signal circuit
Supply voltage 12 … 36 V DC
Permissible residual ripple U
SS
- 1 V
Output signal
- range
3,8 … 20,5 mA
- resolution 6 µA
Current limitation approx. 22 mA
Fault signal 22 mA (3,6 mA)
Integration time 0 … 10 s adjustable
Average delay time 150 ms
Connection cable 2-wire
Max. permissible load dependent on the supply voltage
(see load diagram)
12
250
0
18 24 30 36
500
750
1000
Load RL
total
in Ohm
Voltage of the external energy U
H
in Volts
Indicating and adjustment circuit
For connection to VEGADIS 10 and/or the indicating module
Data transmission digital
Connection cable 4-wire (standard cable)
Cable length max. 25 m
Transmission reaction
Measuring ranges
Min. pressure 10 mbar
abs
Zero -20 % … +95 % adjustable of nominal range
Span 3,3 % … 120 % adjustable of nominal range
Turn up up to +95 %
Turn down up to 1 : 30
Recommended turn down:
Accuracy class 0,25
up to 1 : 5
Accuracy class 0,1 up to 1 : 10