Vega VEGABAR 20 Bedienungsanleitung PDF herunterladen (Seite 14)

14 VEGABAR 20

4.1 Adjustment of the basic

functions

Adjustment elements

OPERATE

t

SPAN

ZERO

i

Key +: Change

value (raising)

Key –: Change

value (lowering)

Rotating switch: Select re-

quired function

Set-up

Indicating module

VEGABAR

87654321

4 ¼ 20 mA

DISPLAY

VEGADIS 10

12 ¼ 36 V DC E12

+ -

+

-

OK

0 - 20 bar

Loosely tighten screws

4 Set-up

Electrical connection and set-up can be sim-

plified by temporarily mounting the cover or

indicating module on VEGABAR or laterally

displaced downwards.

Adjustment system

• Select the required function with the rotat-

ing switch.

• Change the value with keys “+“- and “–“.

• Reset rotating switch to OPERATE, the

adjusted values are transferred to the

EEPROM-memory. They remain there even

on voltage loss.

Adjustment

For adjustment of zero and span, a current

meter must be connected to terminals 1 and

3. The measured value is identical with the

output current.

1 Adjustment of zero

(e.g. process pressure zero or empty

vessel)

• Set rotating switch to zero

• By pushing the “+“ and “–“-keys simultane-

ously, the current jumps directly to 4 mA or

set it to 4 mA by pushing the “+“ and “–“-

keys

Adjustment range of zero:

-20 % … +95 % of the nominal measuring

range (corresponds to turn up of up to

+95 %)

2 Adjustment of span

(e.g. process pressure or vessel level

maximum)

• Set rotating 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.

- 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 3,3 %).

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