Type 8232

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Sensor model

Free chlorine sensor

“Trace” (zero-chlorine)

Free chlorine sensor

with 3  electrodes

Free chlorine sensor

with 2  electrodes

Total chlorine sensor

with 3  electrodes

Cross sensitivity/Inter-

ference

• ClO

2, O3 influence the

signal strongly.

• High concentrations

of bound chlorine can

increase the meas-

ured value.

• Corrosion inhibitors,

Stabilisers for water

hardness can lead to

measuring errors.

• Reducing agents

can lead to a loss in

slope.

• ClO

2 (factor 0.75), O3

(factor 0.8) influence

the signal.

• High concentrations

of bound chlorine can

increase the meas-

ured value.

• Corrosion inhibitors,

Stabilisers for water

hardness can lead to

measuring errors.

• ClO

2 (factor 9), O3

influence the signal.

• Electrolytically gener-

ated chlorine with a

cell without mem-

brane can disturb

measurement.

• ClO

2 (factor 1)

• O

3 (factor 1.3)

• Corrosion inhibitors,

Stabilisers for water

hardness can lead to

measuring errors.

Maintenance2.)

Control of the measuring

signal

Min. once a week rec-

ommended

Min. once a week rec-

ommended

Min. once a week rec-

ommended

Min. once a week rec-

ommended

Change of the mem-

brane cap

Once a year recom-

mended

Once a year recom-

mended

Once a year recom-

mended

Once a year recom-

mended

Change of the electrolyte Every 3…6 months

recommended

Once a year recom-

mended

Every 3…6 months

recommended

Once a year recom-

mended

Product accessories

Membrane cap

M48.2 with intern holder

(G-holder)

M48.4E (M48.4S for sea

water on request)

M20.2

M48.4E (M48.4S for

sea water or brine on

request)

Chlorination agent

Inorganic chlorine com-

pounds:

• NaOCl (sodium hy-

pochlorite)

• Ca(OCl)

2

• Chlorine gas

• Electrolytically gener-

ated chlorine

Inorganic chlorine com-

pounds:

• NaOCl (sodium hy-

pochlorite)

• Ca(OCl)

2

• Chlorine gas

• Electrolytically gener-

ated chlorine

Inorganic chlorine com-

pounds:

• NaOCl (sodium hy-

pochlorite)

• Ca(OCl)

2

• Chlorine gas

• Chlorine electrolysis

with membrane cell

(unsuitable: chlorine

electrolysis without

membrane cell)

Inorganic chlorine com-

pounds:

• NaOCl (sodium hy-

pochlorite)

• Ca(OCl)

2

• Chlorine gas

• Electrolytically gener-

ated chlorine

Suitable transmitter

Type 8619 multiCELL  Transmitter/Controller3.) or any transmitter with appropriate input

Further accessory

• Photometer MD100

• DPD-1 reagent

• External calibration

device

• Photometer MD100

• DPD-1 reagent

• Photometer MD100

• DPD-1 reagent

• Photometer MD100

• DPD-4 reagent

• DPD-1 + DPD-3

reagents

Detailed information can be found in chapter “9.5. Ordering chart accessories” on page 16.

Performance data

Sensor resolution

0.001 ppm

0.01 ppm

0.01 ppm

0.01 ppm

Run-in time

After first start-up and

maintenance operations

approx. 2 hours

After first start-up and

maintenance operations

approx. 2 hours

After first start-up and

maintenance operations

approx. 1 hour

After first start-up and

maintenance operations

approx. 2 hours

Response time (t90 %)

Approx. 120 s

Approx. 120 s

Approx. 30 s

Approx. 3 min. (brine

approx. 5 min.)

Sensor reactivity loss

After max. 4 weeks use

in chlorine-free water

After max. 24 hours use

in chlorine-free water

After max. 24 hours use

in chlorine-free water

After max. 24 hours use

in chlorine-free water