VEGA VEGABAR 40 HART - Manual (Page 16)

16 VEGABAR 40 (HART ® )
Setup
2 Adjustment of span
(e.g. process pressure or level at maximum)
• Set rotary switch to span.
• By pushing the "+“ and "–“ keys simultane-
ously, the current jumps directly to 20 mA
or set it to 20 mA by pushing the "+“ and "–
“ keys.
Adjustment range of span:
3.3 % … 120 % of the nominal measuring
range (corresponds to turn down 1 : 30)
Note:
- A modification of zero does not influence
the span, i.e. the measuring range final
value is shifted.
- It is also possible to adjust currents for
partial fillings or partial pressures, e.g.
8 mA for 25 % and 16 mA for 75 %. VEGA-
BAR automatically calculates the current
values for 0 % or 100 % (only possible with
≥
3.3 %).
Integration time
An integration time t
i
of 0 … 10 s can be ad-
justed for damping pressure shocks.
Procedure
• Set rotary switch to t
i
.
• By pushing the "–“ key 10 times, make
sure that the integration time is set to 0 s.
• Push the "+“ key once for every 1 s inte-
gration time required.
The integration time is the time required by
the current output signal to reach 90 % of the
actual level after a sudden change of the
process pressure.