B&C Electronics AF 511.2 Instruction Manual

CERT. N. 9115 BCEL

OPERATOR’ S MANUAL

UNI EN ISO 9001:2000

AF 511.2

ANTIFOAM CONTROLLER

Scale: 0/100 µS

Power: 110/220 Vac

Option

S/N

REP N°

Revision A – Valid from S/N 101.000

B&C Electronics Srl – Via per Villanova 3 – 20040 Carnate (Mi) – Italy P.IVA 00729030965

Tel [phone] – Fax [phone] [e-mail] - www.bc-electronics.it

B&C Electronics AF 511.2 - Rev. A

Index

1 GENERAL NOTES ...........................................................................................................................3

1.1 WARRANTY ...........................................................................................................................3

1.2 CE MARKING .........................................................................................................................3

1.3 WARNINGS.............................................................................................................................3

1.4 TECHNICAL SUPPORT AND REPAIRS..............................................................................3

2 MEASURING SYSTEM ...................................................................................................................4

2.1 FUNCTIONS............................................................................................................................4

2.2 ACCESSORIES AND OPTIONS ............................................................................................4

3 SPECIFICATIONS............................................................................................................................5

3.1 FUNCTIONAL SPECIFICATIONS ........................................................................................5

3.2 TECHNICAL SPECIFICATIONS...........................................................................................6

3.3 PHYSICAL SPECIFICATIONS..............................................................................................6

4 ISTRUZIONI PER L’UTILIZZO......................................................................................................7

4.1 PACKAGE LIST ......................................................................................................................7

4.2 PACKING AND UNPACKING ..............................................................................................7

4.3 STOCKING AND SHIPPING .................................................................................................7

4.4 DISPOSAL ...............................................................................................................................7

4.5 PHYSICAL INSTALLATION.................................................................................................8

4.5.1 Environmental conditions.................................................................................................8

4.5.2 Mounting ..........................................................................................................................8

4.5.3 Electrical installation ........................................................................................................8

4.6 OPERATING THE SYSTEM ................................................................................................10

4.7 CALIBRATION .....................................................................................................................11

4.8 MAINTENANCE ...................................................................................................................12

5 DRAWING AND ATTACHMENTS..............................................................................................12

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B&C Electronics AF 511.2 - Rev. A

1 GENERAL NOTES

This manual is written accordingly to the normative UNI 10653 – UNI 10893 – CEI EN 61187.

1.1 WARRANTY

This instrument is covered by warranty for all manufacturing defects.
Please read the Warranty Certificate at the end of this manual.

1.2 CE MARKING

This instrument is in compliance with the European Union directives :

- 73/23/EEC (Low Voltage Directive) amended by 93/68/EEC.

- 89/336/EEC (Electromagnetic Compatibility Directive) amended by 92/31/EEC and 92/68/EEC.

The marking is placed both on the instrument packaging and on the serial number label attached
to the instrument.

1.3 WARNINGS

The manuals includes the following symbols:

Caution, refer to accompanying documents

Caution

Attention

*

Note

)

“*”

Revision

This symbol is used to indicate that if instructions are not
followed correctly the instrument could be damaged.

This symbol is used when the operator is asked to pay
particular attention to what is written in the manual.

This symbol is used in all those chapters that have been
reviewed to indicate that something has changed from
previously issued manuals.

1.4 TECHNICAL SUPPORT AND REPAIRS

ISO 3864, N°B.3.1

B&C Electronics provides its Clients with a free Technical Support in case of needing during
installation and usage of the instrument.

Also, B&C Electronics offers to all Clients the possibility of sending instruments to the manufacturing
headquarter, in Italy, for repairs.
For more details, please take a look at the data sheet placed at the end of this manual.

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B&C Electronics AF 511.2 - Rev. A

2 MEASURING SYSTEM

The measuring system is composed by the instrument AF511.2 and by an electric conductivity probe,
which characteristics are defined by the user in accordance with the specific applications.

The 2 electrodes sensor, for example, can be made with a metallic pole in the fermenter and a mass
connection in the liquid.

2.1 FUNCTIONS

This instrument, connected with a suitable sensor, performs the following:

- it detects foam in the fermenters. The instrument points out the presence of foam when the

probe’s metallic pole is in contact with it;

- it activates the anti-foam devices or it controls the level in continuous cultures by means of a

set-point;

- it shows the conductivity value measured by the probe.

2.2 ACCESSORIES AND OPTIONS

In order to operate, the instrument requires a conductivity probe, which is not included and it must be
ordered separately.
All available options for this instrument are described in Chapter 3.2 “Technical specifications”.

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B&C Electronics AF 511.2 - Rev. A

3 SPECIFICATIONS

3.1 FUNCTIONAL SPECIFICATIONS

Display

On the 11 segments display 1 (Fig.1), the instrument shows the value of conductivity given by the
contact between the probe and the liquid or foam.

The measuring scale is in %; the end of the scale corresponds to a conductivity value of 100 µS,
while the center of the scale corresponds to a conductivity value of 10 µS.
The beginning of the scale corresponds to the display turned off completely.

Zero adjustment

Zero adjustment is done with the trimmer 2 , placed on the front panel.

Sensitivity adjustment

Sensitivity adjustment is done by means of trimmer 3, placed on the front panel.
If necessary, it is possible to make a wider sensitivity adjustment by means of trimmer R74 marked
“K adj” and placed on the rear panel.

Set point adjustment

The instrument has a set-point that can be adjusted along the complete measuring scale, and that can
activate an output relay, pointed out by the red LED 7.
The value of the set-point is adjustable by using the knob 8

Relay delay

The relay of the regulator can be activated with an adjustable delay from 0 to 5 seconds by means of
trimmer R14 marked “DEL B “ and placed by the rear terminal block.
The red LED 7 turns on with less brightness during the delay time previously set.

on the scale.

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B&C Electronics AF 511.2 - Rev. A

3.2 TECHNICAL SPECIFICATIONS

Voltage: 100/220 Vac +/-10 % 50/60 Hz
Input: from conductivity cell
Scale: 0/100 % corresponding to 0/100 µS
Display: bar graph at 10 segments

Zero: +/- 15%
Sensitivity: +/- 20 % fine adjustment

coarse adjustment

Regulator hysteresis: +/- 0.25 %
Switching time: < 0.5 seconds
Regulator delay: 0/5 seconds
Relay contacts: 5 A - 220 V resistive load

Temperature: 0/50 °C
R. Humidity: 95 % without condensate

Fuse: 80 mA T (110 V) 32 mA T (220 V)
Power: 3 VA max

Weight: 1.014 kg
Dimensions: 241 x 89 x 174 mm
Protection IP 41

OPTIONS

091.403 power 24 Vac

3.3 PHYSICAL SPECIFICATIONS

The instrument is designed for panel mounting.
It consists of a metallic case with an epoxy paint.
The front panel is in anodized aluminium covered by a polycarbonate label.

Fig. 3 shows the physical details, dimensions and drill plan of this case.

Connections to the power supply, loads, recorders and probes are made by means of a detachable
terminal block on the rear side.

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