VEGA VEGABAR 21 - Manual (Page 21)

VEGABAR 21 21
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 the adjusted value.
Processing
Adjustment of the integration time
For damping of pressure shocks an
integration time t
i
of 0 s … 10 s can
be adjusted with the “+“ or “–“-key.
With the “OK“-key the adjusted value can be
saved.
Selection of the unit
In the measured value indication
the actually measured pressure is
displayed on the DOT-matrix. The
appropriate unit can be chosen out
of 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 actually measured
pressure is displayed on the indicating mod-
ule as 4-digit digital value.
The bar graph relates to the adjusted meas-
uring range and change proportionally to the
current output. Digital values < –10 % or
> 110 % are displayed as flashing figure.
By scaling user specific figures as 4-digit
digital values are coordinated on the indicat-
ing module to the values 4 mA or 20 mA of
the current output.
Outputs
Current output/Selection of the character-
istics
The current output provides the actually
measured pressure as analogue current
signal 4 … 20 mA relating to 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
If during the continuous self-monitoring fail-
ures, damages or interferences in the mea-
suring cell or the electronics are detected,
the fault signal is triggered via the current
output.
With the “+“ or “–“-key and the
“OK“-key you choose if the failure
current should be 22 mA or
3,6 mA.
Simulation
To check the outputs of VEGABAR
and connected components, you
can adjust with the “+“ or “–“-key an
individual pressure or %-value. The
adjusted value flashes with acti-
vated simulation. With the “OK“-key
the simulation can be finished.
ti
1
s
Simula-
tion
Sim.
xx,x
mbar
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