SZ7231-SZ7233 - Rev B

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    U N I E N I S O 9 0 0 1 : 2 0 0 0

    C E R T . N . 9 1 1 5 B C E L

    B&C Electronics Srl - Via per Villanova 3 - 20040 Carnate (Mi) - Italy - P.IVA 00729030965Tel +39 039 63 1721 - Fax +39 039 607 6099 [email protected] - www.bc-electronics.it

    INSTRUCTION MANUAL

    SZ 7231 - SZ 7233

    FLOW CELL

    Option

    REP N

    SZ 7231 SZ 7233

    Cod. 28019723 - Rev. B - 10/05

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    B&C Electronics SZ 7231 SZ 7233

    Instruction Manual - Rev. B - 10/05 - 2 -

    Index

    1 DESCRIPTION............................................................................................................................. 3

    2 SPECIFICATIONS....................................................................................................................... 42.1 SZ 7231 Specifications ........................................................................................................ 4

    2.2 SZ 7233 Specifications ........................................................................................................ 4

    3 INSTALLATION ......................................................................................................................... 5

    4 OPERATION................................................................................................................................ 5

    5 MAINTENANCE ......................................................................................................................... 6

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    B&C Electronics SZ 7231 SZ 7233

    Instruction Manual - Rev. B - 10/05 - 3 -

    1 DESCRIPTION

    This flow cell series is designed for the use with potentiostatic residual chlorine monitors.

    The chlorine electrode is inserted in the cell position 9 .

    The RTD Pt100 is inserted in position 10 .

    The constant head flow cell controls the liquid speed over a wide variation of the feeding flow.

    The cells are provided with a screw 4 suitable for the flow adjustment.

    The package includes 2 m of 4 x 6 mm pipe for the cell connection to the water being measured.

    The water inlet is through the fitting 3 .

    The water outlet is through the fitting 5 on the bottom of the cell.

    The cell SZ 7233 is designed for the insertion in the position 8 of the pH and ORP electrodes.

    Electrodes must be inserted in the position suggested in this manual in order to have a correct

    operation.

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    2 SPECIFICATIONS

    2.1 SZ 7231 SPECIFICATIONS

    Body transparent epoxy

    Inlet 1/4" fittingOverflow outlet 10 x 14 mm diameter pipe

    Dimensions 150 x 90 x 40 mm

    Fittings 1/4" for 4 x 6 mm pipe

    Connection pipe 2 m 4 x 6 mm (included)

    Water Flow approx. 10/30 l/hour

    Temperature 0/50 C

    Sensors 12 mm diameter

    RTD sensor 5 mm diameter

    2.2 SZ 7233 SPECIFICATIONS

    Body transparent epoxy

    Inlet 1/4" fitting

    Overflow outlet 10 x 14 mm diameter pipe

    Dimensions 150 x 120 x 40 mm

    Fittings 1/4" for 4 x 6 mm pipe

    Connection pipe 2 m 4 x 6 mm (included)

    Water Flow approx. 10/30 l/hour

    Temperature 0/50 CSensors 12 mm diameter

    RTD sensor 5 mm diameter

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    B&C Electronics SZ 7231 SZ 7233

    Instruction Manual - Rev. B - 10/05 - 5 -

    3 INSTALLATION

    The flow cell must be installed in vertical position close to the measuring instrument.

    The flow assembly is wall mounted using the bolt holes 7 .

    The overflow pipe connected to 5 must discharge in air, without any counter pressure (example into a

    1" pipe).

    4 OPERATION

    - Insert the chlorine electrode in position 9 .

    - Insert the RTD (if available) in position 10 .

    - Connect the measuring electrode (and RTD) to the instrument following the specific

    connections instruction.

    - Adjust the screw 4 in order to have the over flow even in the minimum inlet water pressure

    condition.

    - When the inlet flow adjustment is critical, install a supplementary tap on the feeding pipe.

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    B&C Electronics SZ 7231 SZ 7233

    Instruction Manual - Rev. B - 10/05 - 6 -

    5 MAINTENANCE

    The Chlorine electrode requires periodic maintenance.

    When the platinum bands become fouled the sensitivity of the measuring decrease and it is necessary

    to clean the platinum electrodes, pressing and rotating by hand a filter paper or similar.

    Sensor maintenance should be performed every 4 weeks depending upon the severity of the sample

    stream conditions.

    Dirty applications will require more frequent maintenance, while high purity water applications will

    require less frequent maintenance.

    When some deposits or biological fouling are into the cell and internal holes, unscrew and remove the

    cell cleaning screw 6 and the OR, clean the holes and reassembly the screw and the OR.

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    SZ 7231 CONNECTIONS

    1.

    Body2.

    Drilled cover

    3. Inlet

    4. Flow control

    5. Outlet

    6. Cell cleaning screw

    7.

    Fixing holes

    9. Chlorine electrode

    10. RTD sensor

    Fig. 1

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    B&C Electronics SZ 7231 SZ 7233

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    SZ 7233 CONNECTIONS

    1. Body

    2.

    Drilled cover3.

    Inlet

    4. Flow control

    5. Outlet

    6. Cell cleaning screw

    7. Fixing holes

    8.

    pH / ORP electrode

    9. Chlorine electrode

    10. RTD sensor

    Fig. 2

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    N O T E S