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Burkert-Type 8232 - Chlorine sensor

Burkert – Type 8232 Chlorine Sensor

  • Free chlorine sensor with three electrodes and greatly reduced pH dependency
  • Total chlorine sensor with three electrodes and greatly reduced pH dependency
  • Free chlorine sensor with two electrodes for standard applications at a constant pH value
  • Free chlorine sensor “Trace” with three electrodes for measuring at low concentrations
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Type 8232 – Chlorine sensor

The 8232 from Bürkert is an electrochemical sensor for measuring the free or total chlorine content of an inorganic source (chlorine gas, sodium hypochlorite solution, …). Four variants of Type 8232 are available:

  • The “Trace” chlorine sensor (zero chlorine) equipped with three electrodes is suitable for measuring very low concentrations of free chlorine. The diaphragm of this sensor is protected against biofouling and can therefore work for up to four weeks in water without chlorine. It has a voltage output on a 5-pin M12 circular male connector.
  • The free chlorine sensor with three electrodes offers greatly reduced pH dependency. The sensor has a current output on a 5-pin M12 circular male connector and is designed for applications in swimming pool, drinking or sea water. The liquid must contain a minimum chlorine concentration (≥ 0.1 ppm).
  • The free chlorine sensor with two electrodes delivers a current output on a 5-pin M12 circular male connector. This sensor is designed for use with swimming pool, drinking or process water. The fluid being measured must not contain any cleaning agents (e.g. surfactants) or abrasive particles. The pH value must be kept at a constant level. The fluid must contain a minimum chlorine concentration (≥ 0.1 ppm).
  • The total chlorine sensor with three electrodes offers greatly reduced pH dependency. The sensor has a current output on a 5-pin M12 circular male connector and is suitable for applications in swimming pools, drinking or sea water, and brine. It measures total chlorine = free chlorine + combined chlorine.

DOWNLOAD DATASHEETS

Type 8232 data sheet | chlorine sensor DOWNLOAD DATASHEET

Can be combined with

General Technical Data

Product properties
Material
Membrane Microporous hydrophilic
Other PVC-U, stainless steel 1.4571, PEEK
Detailed information can be found in chapter “Free chlorine sensor “Trace” (zero-chlorine) with membrane cap M48.2” on page 7.
Dimensions Detailed information can be found in chapter “3. Dimensions” on page 9.
Weight Approx. 125 g
Compatibility With probe holder Type 8200 version analytical measuring chamber
Detailed information can be found in the data sheet of the armatures for analytical probe, see data sheet Type 8200 .
Measured variable Free chlorine
Application For monitoring absence of chlorine in reverse osmosis systems1.) (ze-ro-chlorine)
Measuring principle amperometric potentio-static 3-electrode system with electronic inside
(completely galvanically isolated, digital internal data processing)
Electrolyte EMST1 gel
Measuring range 0.005…2 ppm
Zero point adjust-ment Not necessary
Cross sensitivities/Interferences • ClO2, O3 influence the signal strongly.
• High concentrations of bound chlorine can increase the measured value.
• Corrosion inhibitors, Stabilisers for water hardness can lead to measuring errors.
• Reducing agents can lead to a loss in slope.
Temperature com-pensation Automatic (integrated temperature sensor) Sudden temperature changes must be avoided.
Maintenance2.)
Control of the meas-uring signal
Change of the mem-brane cap
Change of the elec-trolyte		 Min. once a week recom-mended
Once a year recommend-ed
Every 3…6 months rec-ommended
Product accessories Membrane cap M48.2 with intern holder (G-holder)
Chlorination agents Inorganic chlorine compounds:
• NaOCl (sodium hy-pochlorite)
• Ca(OCl)2
• Chlorine gas
• Electrolytically gener-ated chlorine
Drift Approx. – 3 % per month, in reference conditions (25 °C, pH 7.2 in drinking water)

Electrical data
Operating voltage • 9…30 V DC, filtered and regulated (other-wise the probe may be damaged)
• The power supply is galvanically isolated inside of the sensor.
Current consump-tion Approx. 56…20 mA
Outputs • Analog signal
• 0…2000 mV (max. 2500 mV)
• Galvanically insulated, that means poten-tial-free
• Output resistance:
1 kΩ

Medium data
Fluid Water with similar charac-teristics to drinking water
Fluid flow rate 15…30 l/h mounted in analytical measurement chamber 8200, the measuring value depends on the flow rate (ensure constant flow rate)
Fluid pH range pH 6.5…pH 9 Detailed information can be found in chapter “Slope versus pH” on page 9.
Fluid temperature 0…+ 40 °C
(+ 32…+ 104 °F)
Fluid pressure Max. 0.5 bar (7.26 PSI), operation with or without retaining ring, no pressure drops and/or vibrations

Process/Port connection & communication
Process connection With probe holder Type 8200, see data sheet Type 8200 .
Electrical connection Electrical connection 4 pin fixed hermaphroditic connector

Environment and installation
Operation 0…+ 55 °C (+ 32…+ 131 °F)
Storage • Probe: unlimited time at + 5…+ 40 °C (+ 41…+ 104 °F), frost protected, dry and without electrolyte
• Membrane cap:
– in original packing unlimited time at + 5…+ 40 °C (+ 41…+ 104 °F)
– used membrane caps cannot be stored
• Electrolyte: + 5…+ 35 °C (+ 41…+ 95 °F), 1 year or until the specified expiry date in original bottle protected from sunlight
Transport + 5…+ 50 °C
(+ 41…+ 122 °F) (mem-brane cap, electrolyte, probe)
Relative air humidity ≤ 90 %, without condensation
Height above sea level Max. 2000 m
Degree of protection according to  IEC/EN 60529 IP65 with cable plug mounted and tightened

*For selecting thecorrect product please refer to the technical data, images and notes for proper use according to the data sheet, or contact Flu-Tech directly.

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