Digital disinfection sensor
Chloromax CCS142D

Digital disinfection sensor
Chloromax CCS142D ©Endress+Hauser
Digital disinfection sensor
Chloromax CCS142D ©Endress+Hauser

Memosens converts the measured value to a digital signal and transfers it to the transmitter without a contacting connection. This video shows how Memosens optimizes process control and maintenance.

Memosens sensor for drinking water and process applications

Chloromax CCS142D is the digital free chlorine sensor for all kinds of water. It measures reliably even if fluctuations in flow or conductivity occur and enables control of the disinfection loop so that the water is free of germs. The sensor offers low maintenance saving you time. Thanks to Memosens digital technology, CCS142D combines maximum process and data integrity with simple operation. It resists corrosion and moisture, enables lab calibration and simplifies predictive maintenance.

  • Benefits

    • Long calibration and maintenance intervals

    • Easy membrane replacement thanks to prefabricated membrane cap

    • Zero-point calibration normally not required, but possible for best adaptation to lowest measured values

    • Measured values are not affected by...

  • Field of application

    Chloromax CCS142D measures free chlorine in:

    • Drinking water
      - Trace and standard measurement in process water and distribution networks
      - Monitoring, control and optimization of disinfection processes

    • Wastewater treatment plants
      - Reuse of cleaned...

Features and specifications



  • Measuring principle

    Free chlorine

  • Application

    Water treatment, drinking water, service water, process water, distribution network

  • Characteristic

    Amperometric measurement of free chlorine

  • Measurement range


    0.05 to 20 mg/l Cl2 (25 °C (77 °F), pH 7.2)


    0.01 to 5 mg/l Cl2 (25 °C (77 °F), pH 7.2)

  • Measuring principle

    Membrane-covered amperometric sensor

  • Design

    Sensor for use in flow cell (CCA250)
    or for immersion use (thread NPT 3/4 on top)


  • Material

    Sensor shaft: PVC

    Membrane: PTFE

    Membrane cap: PBT, PVDF

    Cathode: gold

    Anode: silver / silver chloride

  • Dimension

    Diameter sensor body: 25 mm (0.98 inch)

    Diamter sealing seat for flow cell: 31 mm (1.22 inch)

    Length: 148 mm (5.83 inch)

  • Process temperature

    0 to 45 °C (32 to 113 °F), non-freezing

  • Process pressure

    Medium in the CCA250 assembly: max. 1 bar (14.5 psi)

  • Temperature sensor

    Integrated (Memosens)

  • Connection


Documents / Manuals / Software

Accessories / Spare parts

Order code
  • 1
  • 2
  • A
    • Nr A Order code 50005255

      Replacement cartridges CCY 14-WP

      2 pcs., ready made for CCS 140/141/240/241

  • A
    • Nr A Order code 71076921

      Maintenance kit, CCS14x

      Content: Electrolyte 50ml / 1,69 fl.oz.; 2 membrane caps polish foil (2 qualities)

    • Order code 51500832

      Junction box RM

      to lengthen the cable for Memosens/CUS31/41. Protection class IP 65, with 2x PG 13.5

    • Order code 71257946

      photometer M+N PF-3, desinf. (chlorine)

      colorimetric measurement of free and total chlorine 0,05 .. 6mg/l Disinfection, drinking and process water hand held photometer, IP67-graded, with cuvettes, DPD, according to ISO 7393 deliverey in plastic case, test kit for free and total chlorine included ::hand held photometer for field cal. and verification of desinfection loops

    • Order code CYK10-

      Meas. cable CYK10 Memosens

      Application: digital sensors with inductive Memosens plug-in head Working limit: max. -20...135oC

    • Order code COY8-

      Zero-point gel COY8

      Zero point: Verification, calibration, adjustment at zero point of oxygen and disinfection sensors ::Amperometric and optical sensors ::12, 25 and 40mm diameter ::Application in the lab, in the field

  • Successor