Process Control Instruments, Field Devices and Industrial Automation
SKU# (328)

ENDRESS+HAUSER  CCS241-N




ENDRESS+HAUSER CCS241-N (1)
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EH CCS241 Analog disinfection sensor for trace measurement of Chlorine Dioxide (Cl2) 0,01 - 5ppm. Amperometric and membrane-covered. NTC-temperature sensor.

Part# with Options:        CCS241-N
Price with Options:        Please Email us your request for quote   

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Version
(1) Version for EH CCS241

  Availability 7 Days  ]

Sensors for chlorine dioxide

Amperometric, membrane-covered sensors for installation in the CCA250 assembly

Application

Chlorine dioxide is used for disinfection of water. Its dosing must be carefully controlled to suit the application. Too low a concentration makes the degree of disinfection questionable.

Too high a concentration can result in corrosion effects, impairment of taste or skin irritation.

The CCS240 and CCS241 sensors are applied for measurement of chlorine dioxide in the following fields:

  • Drinking water treatment
  • Pool water treatment
  • Industrial water treatment
Your benefits
  • Measurement in the CCA250 flow assembly is almost independent of flow rate in the range above 30 l/h
  • No zero point calibration necessary. This means complicated installation of an active carbon filter, as in open chlorine dioxide sensors, is not necessary.
  • Measured values are not affected by conductivity fluctuation of the medium.
  • The CCS240 sensor is ready for measurement after a polarisation time of approx. 10 ... 30 minutes. The CCS241 sensor requires 45 ... 90 min.
  • Easy membrane replacement thanks to ready-made membrane head
  • Recalibration intervals approx. 1 ... 4 months under constant operating conditions
Function

The CCS240 and CCS241 sensors are used for measurement of chlorine dioxide. The membrane-covered CCS240 / CCS241 sensors consist of a cathode serving as the working electrode and an anode acting as the counter electrode. These electrodes are immersed in an electrolyte. Electrodes and electrolyte are separated from the medium by a membrane. The membrane prevents the loss of electrolyte and the penetration of contaminants.

To calibrate the measuring system, determine the content of chlorine dioxide using the DPD method. You need a photometer with the pertaining reagents. The determined value is the calibration value for the transmitter.

Measuring Principle

The concentration of chlorine dioxide is determined according to the amperometric measuring principle. The chlorine dioxide (ClO 2 ) contained in the medium diffuses through the sensor membrane and is reduced to chloride ions (Cl - ) on the gold cathode. On the silver anode, silver is oxidized to silver chloride. The electron release of the gold cathode and electron acceptance on the silver anode result in a current flow which is proportional to the chlorine dioxide concentration in the medium. This process takes place within a wide pH and temperature range.

Measuring system

A complete measuring system comprises at least:

  • Chlorine dioxide sensor
  • Liquisys M CCM223/253 transmitter
  • Special measuring cable
  • Flow assembly
  • Reference measuring instrument for determination of chlorine dioxide according to the DPD method

Measuring Principle Chlorine dioxide
Application Drinking water, water, process
Characteristic Amperometric measurement of dissolved chlordioxide
Measurement range 0,01 - 5ppm Chlordioxide
Measuring principle - closed (membrane covered) measuring cell.
- Reduction of chlordioxide (ClO2) to chlorid at the cathode with appr. 120mV.
Design Closed amperometric 2-electrode measuring cell with PTFE membrane.
Material Sensor shaft : PVC
Membrane : PTFE
Membrane cap : PBT (GF30); PVDF
Dimension Diameter : appr. 25mm
Length : 160mm
Process temperature 2C ... 45C
Process pressure 0bar - 1bar
temperature sensor With NTC-temperature sensor
Connection Fixed cable

  • ANALYSIS > TRANSMITTERS
    CCM223-EK0005 EH Liquisys CCM223 Disinfection transmitter for use with all analog total chlorine, free chlorine, chlorine dioxide and pH sensors. 0/4-20 mA, HART and PROFIBUS interfaces. IP54. ..

  • ANALYSIS > TRANSMITTERS
    CCM253-EK0005 EH Liquisys CCM253 Disinfection transmitter for use with all analog total chlorine, free chlorine, chlorine dioxide and pH sensors. 0/4-20 mA, HART and PROFIBUS interfaces. IP65. CSA Approval. ..

  • CHLORINE ANALIZERS > ASSEMBLY
    CCA250-A0 EH Flowfit CCA250 Flow assembly for free chlorine measurement in drinking, industrial and pool water. Designed to accommodate chlorine, pH and ORP sensors. Plexiglas Housing. ..

  • CHLORINE SENSORS > GENERAL PURPOSE
    CCS240-N EH CCS240 Analog disinfection sensor for standard measurement of Chlorine Dioxide (Cl2) 0,05 - 20ppm. Amperometric and membrane-covered. NTC-temperature sensor. ..


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