VEGA VEGABAR 20 - Manual (Page 19)

VEGABAR 20 19
Set-up
Note:
- A modification of zero does not influence
the adjusted span.
- By pushing the “+“ and “–“-keys the output
current remains on the last value, after
saving with the “OK“-key, the output cur-
rent takes on the adjusted value.
Evaluation
Adjustment of the integration time
An integration time t
i
of 0 s … 10 s
can be adjusted with the “+“ or “–“-
key to damp pressure shocks. The
adjusted value can be saved with
the “OK“-key.
Selection of the unit
The actual measured pressure is
displayed on the DOT-matrix in the
measured value indication. The
appropriate unit can be chosen
from a list with the “+“ or “–“-key
and the “OK“-key. When choosing
the unit “Scal.“ the following menu
points are available.
Scaling
In operating condition the actual measured
pressure is displayed on the indicating mod-
ule:
- as a bar graph with 20 segments
- as a 4-digit digital value.
Bar graph and digital value relate to the ad-
justed measuring range and change propor-
tionally to the current output. Digital values
< –10 % or > 110 % are displayed as flash-
ing figures.
As a result of scaling, the 4 mA or 20 mA
user-specific current output values are as-
signed to the indicating module as 4-figure
digital values.
Outputs
Current output/Selection of the character-
istics
The current output provides the actual meas-
ured pressure as an analogue current signal
4 … 20 mA depending on the adjustment.
The characteristics can also be
inverted, i.e. adjusted to 20 ... 4 mA
with the “+“ or “–“-key and the
“OK“-key.
Fault signal
The fault signal is triggered via the current
output if during continuous self-monitoring,
failures, damage or interference in the mea-
suring cell or the electronics are detected, .
You choose whether the failure
current should be 22 mA or 3,6 mA
with the “+“ or “–“-key and the
“OK“-key .
Simulation
You can adjust with the “+“ or “–“-
key an individual pressure or %-
value to check the outputs of VEGA-
BAR and connected components.
The adjusted value flashes with
activated simulation. The simulation
can be finished with the “OK“-key.
ti
1
s
Unit
0,0
mbar
psi
kPa
%
scal.
mA
Scaling
indica-
tion
100%=
1000
Decimal
point
888,8
0%=
0 Escape
Fautl
signal
22mA
3,6mA
Current
output
4-20mA
20-4mA
Simula-
tion
Sim.
xx,x
mbar