Vega D96_D97 Profibus PA Bedienungsanleitung PDF herunterladen (Seite 21)

Pressure transmitter D96/D97 (Profibus PA) 21

Setup

ti

1

s

Adjustment without taking the current

pressure into account (dry adjustment)

Adjustment without pressure comprises four

steps:

1 Selection of the unit in which the adjustment

is to be carried out

2 Offset correction

3 Adjustment of zero

4 Adjustment of span

The offset correction (only in gauge pressure

mode) defines the reference positions for the

measurement. It can be carried out:

- before or after adjustment of zero and

span

- before or after installation of transmitters.

The transmitter must be unpressurised for

the offset correction!

Adjustment without pressure can be carried

out with the instrument mounted or dis-

mounted (e.g. workroom). Any ambient pres-

sure has no effect on the adjustment.

1 Selection of the unit

Choose the unit with the "+" or "–"

key. Save the selected unit with

the "OK" key.

2 Adjustment of zero

Adjust zero with the "+" or "–" key

and save with the "OK" key.

Zero

0,0

mbar

Span

100,0

mbar

4 Adjustment of span

Adjust span with the "+" or "–" key

and save with the "OK" key.

Note:

- A modification of zero does not influence

the span.

- By pushing the "+" and "–" keys, the output

remains on the last value - only after saving

with the "OK" key will the output take on the

adjusted value.

Evaluation

Linearisation curve

Is only displayed if a linearisation

curve has been activated with VVO.

Adjustment of the integration time

An integration time t

i

of 0 s … 50 s

can be adjusted with the "+" or "–"

key for damping of pressure

shocks. The adjusted value can be saved

with the "OK" key.

Selection of the indicated unit

The measurement unit for the indi-

cated measured value as well as

for the display module can be

selected here (with the "+" or "–"

key and the "OK" key). If you select

"scal.", the scaled PA output value

will be displayed (as adjusted

under "Scaling outp.").

Lin.-

curve

activ

Adjust

without

pres.

Unit

0,0

mbar

psi

kPa

inHg

Unit

0,0

skal

psi

kPa

%

m

ft

inch

mbar

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