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Digital pH sensor
Memosens CPS41E

Memosens CPS41E - digital pH sensor with liquid KCl electrolyte ©Endress+Hauser
Memosens CPS41E - digital pH sensor with liquid KCl electrolyte, hazardous areas ©Endress+Hauser

The pH-value of a liquid can be calculated using the potentiometric measurement principle. This video shows what it is about and how this measuring principle works.

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 2.0 pH electrode for demanding applications in the chemical and life sciences industries

Memosens CPS41E features a liquid KCl electrolyte and a ceramic junction making it extremely suitable for harsh chemical applications, fast-changing media and liquids with low conductivity or high organic content. Its integrated Memosens 2.0 digital technology enables extended data storage and lab calibration which results in easier operation and more process uptime and provides the perfect basis for predictive maintenance. The non-contact signal transmission ensures integrity of your process.

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Meet your basic measurement needs

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Handle your core processes easily

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  • Specs at a glance

    • Measurement range

      Application A
      • pH: 1 to 12
      Application B
      • pH: 0 to 14

    • Process temperature

      Application A: –15 to 80 °C (5 to 176 °F)
      Application B: 0 to 135 °C (32 to 275 °F)

    • Process pressure

      0.8 to 11 bar (11.6 to 159.5 psi) absolute

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  • Benefits

    • Memosens 2.0 for perfect support of IIoT, digital transformation and predictive maintenance: It provides enhanced storage of calibration and process data, enabling better trend identification.

    • Suitable for harsh conditions: Continuous refilling of KCl...

  • Field of application

    Media with very low conductivities or a considerable amount of organic solvents or alcohols and fast changing media:

    • Chemical industry

    • Power plants, e.g. boiler feed water

    • Life sciences, e.g. water for injection

    With ATEX, IECEx, CSA C/US, NEPSI, Japan,...

Features and specifications

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Details

  • Measuring principle

    Potentiometric

  • Application

    Media with very low conductivity or a high proportion of organic solvents or alcohol:

    • Chemical industry

    • Organic chemicals

    • Power stations

    • Laboratory measurements

  • Characteristic

    Digital pH electrode for process engineering with ceramic junction
    and KCl liquid electrolyte

  • Measurement range

    Application A

    • pH: 1 to 12

    Application B

    • pH: 0 to 14

  • Measuring principle

    Liquid-KCl compact electrode with ceramic junction

  • Design

    All shaft lengths with temperature sensor

  • Material

    Sensor shaft: Glass to suit process

    pH membrane glass: Type A and B

    Metal lead: Ag/AgCl

    Open aperture: Ceramic junction, zirconium dioxide

    O-ring: FKM

    Process coupling: PPS fiber-glass reinforced

    Nameplate: Ceramic metal oxide

  • Dimension

    Diameter: 12 mm (0.47 inch)
    Shaft length: 120, 225, 360 and 425 mm
    (4.72, 8.86, 14.17 and 16.73 inch)

  • Process temperature

    Application A: –15 to 80 °C (5 to 176 °F)

    Application B: 0 to 135 °C (32 to 275 °F)

  • Process pressure

    0.8 to 11 bar (11.6 to 159.5 psi) absolute

  • Temperature sensor

    NTC 30K

  • Ex certification

    With ATEX, IECEx, CSA C/US, NEPSI, Japan Ex and INMETRO approvals for use in
    hazardous areas Zone 0, Zone 1 and Zone 2.

  • Connection

    Inductive, digital connection head with Memosens 2.0 technology

  • Ingres protection

    IP68

  • Additional certifications

    Additional certifications

Documents / Manuals / Software

Accessories / Spare parts

Nr
Order code
Specification
    • Order code 71038228

      Memoclip label Memosens sensor

      for assignment of sensors to measuring loop. 100 sensor clips with printable labels

    • Order code CPY20-

      Technical buffer solution CPY20

      pH quality buffer solution, referenced to primary reference material of PTB and standard reference material of NIST. in DAkkS accredited buffer Laboratory.

    • Order code CPY4-

      KCL-Electrolyte solution CPY4

      For liquid filled electrodes

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