Vega Conductive electrodes Bedienungsanleitung PDF herunterladen (Seite 29)

Conductive measuring system 29

Set-up

1

2

3

1

2

3

Selection of mode A/B

A slide switch (16 and 17) per channel is

located on the circuit board of the signal

conditioning instrument. Position A

corresponds to overfill protection, position B

to dry run protection.

Failure adjustment (soldering bridges)

For monitoring of the electrodes and their

circuits, a resistor of 220 kOhm must be

mounted between connection 1 and

connection 2 in the connection housing of the

electrode, i.e. with single point control

measuring and mass electrodes are

monitored and with double point control max.

and mass electrode.

For electrodes without 220 kOhm resistor, a

soldering bridge must be closed on the

circuit board on the multipoint connector of

the signal conditioning instrument

- relating to channel 1 = bridge BR1 (14)

- relating to channel 2 = bridge BR2 (15).

Note

With closed soldering bridge the line

monitoring and appropriate fault signal are

inactive.

If a measuring system is used as part of an

overfill protection, the appropriate soldering

bridge must not be closed.

With Ex-electrodes of VEGA this resistor is

already available as a standard feature.

Selection of the mode

By means of the two selection switches (16

and 17) mode A or B can be adjusted

separately for each channel.

Mode A

preferably as overflow protection

compulsorily as overfill protection

means with covered max.-electrode

- relay of output 1 deenergizes,

connection d10 - b10 are connected

through relays

- transistor output 1 blocks

- LED output 1 extinguishes

means with uncovered max.-electrode (level

detection) or min.-electrode (pump control)

- relay of output 1 energizes,

connection d10 - z10 is connected through

relays

- transistor output 1 is conductive

- LED relay output 1 lights

Mode B

preferably as dry run protection

means with covered max.-electrode

- relay of output 1 energizes,

connection d10 - z10 is connected through

relays

- transistor output 1 is conductive

- LED output 1 lights

means with uncovered max.-electrode (sin-

gle point control) or min.-electrode (double

point control)

- relay of output 1 deenergizes,

connection d10 - b10 is connected through

relays

- transistor output 1 blocks

- LED output 1 extinguishes

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 39 40

Kommentare zu diesen Handbüchern

Keine Kommentare