Vega Conductive electrodes Bedienungsanleitung PDF herunterladen (Seite 27)

Conductive measuring system 27

Set-up

4 Set-up

4.1 VEGATOR 256C

Indicating and adjustment elements

Potentiometer

The switch point or the adaption to the

product conductivity can be adjusted via a

potentiometer. Use a small screwdriver to

carry out the adjustments on the

potentiometer.

Yellow control lamp

lights when the relay is energized,

extinguishes when the relay is deenergized.

Switch point adjustment

Level detection

- Connect the signal conditioning instrument

- Turn the potentiometer anticlockwise up to

complete left position

- Fill the vessel until the max. electrode is

covered by approx. 1 cm

- Turn the potentiometer slowly clockwise

until the yellow LED lights

The switching conductivity of the signal

conditioning instrument is adapted to the

product conductivity.

Pump control (Min-Max-control)

Pre-requirements

- First of all connect only the mass and max.

electrode to the signal conditioning

instrument terminal 2 and 3

- Connect the signal conditioning instrument

to the power supply

Adjust switch point

- Turn the potentiometer anticlockwise up to

complete left position

- Fill the vessel until the max. electrode is

covered by approx. 1 cm

- Turn the potentiometer slowly clockwise

until the yellow LED lights

- Now connect the min. electrode to terminal

1 of the signal conditioning instrument

The switching sensitivity of the signal

conditioning instrument is adapted to the

product conductivity, i.e. the relay of the

output deenergizes at max. level and the

yellow LED extinguishes.

This condition remains until the level

decreases the position of the min. electrode,

i.e. the relay of the output energizes at min.

level and the yellow LED lights.

The relay of the output energizes again at

max. level etc.

LED relay output

0

10

8

7

6

5

4

N

L1

3

2

1

max.

min.

R

200...250V

AC 3VA

Relais: max 250V,5A,750VA

power supply

Potentiometer for switch point

adjustment

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 39 40

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