Analog non-glass pH sensor
Tophit CPS441

Tophit CPS441 - Analog non-glass pH sensor with refillable liquid KCl electrolyte ©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.

  • Tophit CPS441 - Analog non-glass pH sensor with refillable liquid KCl electrolyte

ISFET electrode for the chemical, life sciences and food industries

Tophit CPS441 is the analog high performer for media with low conductivity or a high content of organic solvents. Designed for fast response, it accurately measures even in fast-changing medium compositions. Its unbreakable shaft ensures absolute safety of your products.

Additional components

  • Benefits

    • Unbreakable for highest product safety

    • Resistant to poisoning thanks to constant refilling of KCl bridge electrolyte and separate reference lead

    • Suitable for sterilization

    • Low maintenance thanks to long calibration intervals

  • Field of application

    Media with a high amount of organic solvents or very low conductivities:

    • Chemical industry including precipitation reactions or dispersions (pressurized version)

    • Power plants, e.g. boiler feed water

    • Life sciences, e.g. water for injection

    With 3A, ATEX,...

Features and specifications

Back

Details

  • Measuring principle

    ISFET sensor

  • Application

    - Special applications with high requirements with regard to accuracy and speed - non-glass, break-proof - low temperatures - rapidly changing composition of media - highly clogging media - low conductivities

  • Characteristic

    - Ion sensitive field effect transistor (ISFET) technology - overhead installation - rapid response at low temperatures - lower amount of maintenance required than with glass - 3A

  • Measurement range

    pH 0-14

  • Measuring principle

    - Ceramic diaphragm - liquid lead

  • Design

    - All shaft lengths with temperature sensor

  • Material

    Peek / metal oxide / ceramic / EPDM

  • Dimension

    Diameter: 12 mm (0.47 inch)
    Shaft lengths: 120, 225, 360, 425 mm
    (4.72/8.86/14.2/16.7 inch)

  • Process temperature

    -15°C ... 135°C
    (5°F - 275°F)

  • Process pressure

    max. 10 bar/100°C (145 psi/212°F)

  • Temperature sensor

    Optional with integrated Pt1000

  • Ex certification

    ATEX
    FM

  • Connection

    TOP68 connection head

  • Ingres protection

    IP68

  • Additional certifications

    EHEDG, 3A

Documents / Manuals / Software

  • TopHit CPS 441 and CPS441D

    ISFET sensor with liquid KCI reference electrode for pH measurement in
    blocking media. Analog or digital sensors with Memosens technology

    Technical Information (TI)
  • ISFET sensors Operating Instructions

    Memosens sensors and analog sensors for pH measurement
    Memosens-Sensoren und analoge Sensoren zur pH-Messung

    Operating Instruction (BA)
  • ISFET sensors pH Safety instructions for electrical apparatus in explosion-hazardous areas Safety Instructions

    Safety instructions for electrical apparatus in explosion-hazardous
    areas

    Ex Safety Instructions (XA)
  • Ex Safety Instructions CPS 4XX

    Sicherheitshinweise für explosionsgefährdete Bereiche.
    Safety instructions for hazardous areas.
    Conseils de sécurité pour zones explosibles.

    Ex Safety Instructions (XA)
  • Analog pH/ORP sensors Safety instructions for electrical apparatus in explosion-hazardous areas Safety Instructions

    Safety instructions for electrical apparatus in explosion-hazardous
    areas

    Ex Safety Instructions (XA)
  • Manufacturer Declaration

    TSE/BSE free

    Certificate (ZE)
  • SD Tophit

    Kurzanleitung für ISFET-Sensoren / Short Instructions for ISFET sensors

    Special Documentation (SD)
  • pH 測定セレクションガイド

    産業プロセスにおける pH 測定

    Competence Brochure (CP)
    08/15
    Japanese
  • CP00010C pH measurement in industrial processes for US market

    Selection and engineering guide for your industry and application

    Competence Brochure (CP)
    04/15
    English
  • Measurement and control aspect of pH using inductively coupled with bidirectional Memosens technology in flue gas desulfurization process

    White Paper CP971C pH measurement and control in a power utility is an
    integral part of process. The scrubber efficiency is highlydependent on
    the pH. Numerous opportunities were revealed for saving time, as well as
    the cost and materials in power plants. In afossil fuel power plant,
    the
    chemical energy stored in coal, oil, natural gas, shale oil, oxygen and
    air
    is converted into thermal, mechanical and finally into electrical
    energy. In
    other words, water is heated to steam, which spins a steam turbine. The
    steam turbine drives an electrical generator.

    Competence Brochure (CP)
    04/11
    English
  • CP01202C pH Sensors:Calibrate, clean, perform a calibration check or...?

    This white paper will address
    Knowing when to do a pH sensor calibration versus a calibration
    check
    How to properly clean a pH sensor
    How to perform a pH sensor calibration
    A decision tree for step by step guidance

    Competence Brochure (CP)
    02/12
    English
  • TopHit

    Product Code: CPS441-, CPS471-, CPS491-
    Declaration Number: EC_00625_01.18

    EU Declaration
    German , English , fr
  • TopHit, Sensor, PuriSys, OrbiSint, OrbiPore, OrbiPac, Memosens, Liquisys pH/ORP, Liquisys Oxygen, Liquisys Chlorine, Liquiline M, Liquiline, CeraTex, Ceramax, CeraLiquid, CeraGel

    Product Code: CPS47D-, CPS471D-, CPS471-, CPS441D-, CPS441-, CPS42D-, CPS42-, CPS41E-, CPS41D-, CPS41-, CPS341D-, CPS31D-, CPS31-, CPS171D-, CPS16D-, CPS491-, CPS491D-, CPS64-, CPS71-, CPS71D-, CPS71E-, CPS72-, CPS72D-, CPS76D-, CPS77D-, CPS91-, CPS91E-, CPS92-, CPS92D-, CPS96D-, CPS97D-, CCM223-, CCM253-, CM14-, CM42-, CM442-, CM442R-, CM444-, CM444R-, CM448-, CM448R-, CM44P-, CM72-, CM82-, COM223-, COM223F-, COM253-, COM253F-, CPF201-, CPF81-, CPF81D-, CPF82-, CPF82D-, CPM223-, CPM253-, CPS11-, CPS11D-, CPS11E-, CPS12-, CPS12D-, CPS12E-, CPS13-
    Region/Country: Russia (Declaration of Conformity)
    Approval Number: EAEC D-DE.AD07.B.01363/19

    Miscellaneous
    Russian
  • TopHit, Sensor, PuriSys, OrbiSint, OrbiPore, OrbiPac, Memosens, Liquisys pH/ORP, Liquisys Oxygen, Liquisys Chlorine, Liquiline M, Liquiline, CeraTex, Ceramax, CeraLiquid, CeraGel

    Product Code: CPS491-, CPS47D-, CPS471D-, CPS471-, CPS441D-, CPS441-, CPS42D-, CPS42-, CPS41E-, CPS41D-, CPS41-, CPS341D-, CPS31D-, CPS31-, CPS171D-, CPS491D-, CPS64-, CPS71-, CPS71D-, CPS71E-, CPS72-, CPS72D-, CPS76D-, CPS77D-, CPS91-, CPS91D-, CPS91E-, CPS92-, CPS92D-, CPS96D-, CPS97D-, CPS16D-, CCM223-, CCM253-, CM14-, CM42-, CM442-, CM442R-, CM444-, CM444R-, CM448-, CM448R-, CM44P-, CM72-, CM82-, COM223-, COM223F-, COM253-, COM253F-, CPF201-, CPF81-, CPF81D-, CPF82-, CPF82D-, CPM223-, CPM253-, CPS11-, CPS11D-, CPS11E-, CPS12-, CPS12D-, CPS12E-, CPS13-
    Approval Number: EAEC RU D-DE.AD07.B.01362/19

    Miscellaneous
    Russian
  • TopHit, Sensor, OxyMax W, OrbiTex, OrbiSint, OrbiPore, Memosens, Liquiline M, InduMax P, InduMax H, ConduMax W, ConduMax H, CeraLiquid, CeraGel

    Product Code: CPS42-, CPS43-, CPS441-, CPS441D-, CPS471-, CPS471D-, CPS491-, CPS64-, CPS72-, CPS72D-, CPS91-, CPS91D-, CPS92-, CPS92D-, CPS96D-, CPS41-, CPS21-, CPS16D-, CPS13-, CPS12D-, CPS12-, CPS11D-, CPS11-, COS51D-, CM42-, CLS54-, CLS50D-, CLS50-, CLS16D-, CLS15D-
    Region/Country: Russia (TR CU)
    Approval Agency: EAC
    Protection: Ex ia IIC T6 Ga, Ex ia IIC T6...T3 Ga, Ex ia IIC T6...T4 Ga, Ex ib [ia Ga] IIC T6...T4 Ga

    Explosion Protection
    Russian
  • InduMax P, Liquiline M, Memocheck, Memosens, OrbiPac, OrbiSint, OxyMax H

    Product Code: CPS71D-, CPS71-, CPS491D-, CPS491-, CPS471D-, CPS471-, CPS441D-, CPS441-, CPS42D-, CPS42-, CPS41D-, CPS41-, CPS171D-, CPS72-, CPS72D-, CPS76D-, CPS91-, CPS91D-, CPS92-, CPS92D-, CPS96D-, CTS1-, CYK10-, CYP01D-, CYP02D-, CYP03D-, CLS12-, CLS13-, CLS15-, CLS15D-, CLS16-, CLS16D-, CLS21-, CLS21D-, CLS50-, CLS50D-, CLS54-, CLS82D-, CM42-, CPS16D-, CPS13-, CPS12D-, CPS12-, CPS11D-, CPS11-, CPF82D-, CPF82-, CPF81D-, CPF81-, COS51D-, COS22D-, COS21D-, COS81D-
    Region/Country: Canada, USA
    Approval Agency: CSA

    Explosion Protection
    English
  • InduMax P, Liquiline M, Memocheck, Memosens, OrbiSint, OxyMax H

    Product Code: CPS72-, CPS71D-, CPS71-, CPS491D-, CPS491-, CPS471D-, CPS471-, CPS441D-, CPS441-, CPS42D-, CPS42-, CPS41D-, CPS72D-, CPS76D-, CPS91-, CPS91D-, CPS92-, CPS92D-, CPS96D-, CTS1-, CYK10-, CYP01D-, CYP02D-, CYP03D-, CLS12-, CLS13-, CLS15-, CLS15D-, CLS16-, CLS16D-, CLS21-, CLS21D-, CLS50-, CLS50D-, CLS54-, CM42-, COS21D-, COS22D-, COS51D-, CPF81-, CPF82-, CPS11-, CPS11D-, CPS12-, CPS12D-, CPS13-, CPS16D-, CPS41-
    Region/Country: Canada, USA
    Approval Agency: CSA

    Explosion Protection
    English
  • InduMax P, Liquiline M, Memocheck, Memosens, OrbiSint, OxyMax H

    Product Code: CPS491-, CPS471D-, CPS471-, CPS441D-, CPS441-, CPS42D-, CPS42-, CPS41D-, CPS41-, CPS72-, CPS72D-, CPS76D-, CPS71D-, CPS71-, CPS491D-, CPS91-, CPS91D-, CPS92-, CPS92D-, CPS96D-, CTS1-, CYK10-, CYP01D-, CYP02D-, CYP03D-, CLS12-, CLS13-, CLS15-, CLS15D-, CLS16-, CLS16D-, CLS21-, CLS21D-, CLS50-, CLS50D-, CLS54-, CLS82D-, CM42-, COS21D-, COS22D-, COS51D-, CPF81-, CPF82-, CPS11-, CPS11D-, CPS12-, CPS12D-, CPS13-, CPS16D-, CPS171D-
    Region/Country: Canada, USA
    Approval Agency: CSA

    Explosion Protection
    English
  • InduMax P, Liquiline M, Memosens

    Product Code: CPS41D-, CPS42-, CPS42D-, CPS441-, CPS441D-, CPS471-, CPS471D-, CPS491-, CPS491D-, CPS64-, CPS71-, CPS71D-, CPS72-, CPS72D-, CPS76D-, CPS91-, CPS91D-, CPS92-, CPS92D-, CPS96D-, CTS1-, CYK10-, CYP01D-, CYP02D-, CPS41-, CLS12-, CLS13-, CLS15-, CLS15D-, CLS16-, CLS16D-, CLS21-, CLS21D-, CLS50-, CLS50D-, CM42-, COS21D-, CPS16D-, CPS13-, CPS12D-, CPS12-, CPS11D-, CPS11-, CPF82D-, CPF82-, CPF81D-, CPF81-, COS51D-, COS22D-
    Region/Country: USA
    Approval Agency: FM

    Explosion Protection
    English
  • InduMax P, Liquiline M, Memosens

    Product Code: CPS41-, CPS41D-, CPS42-, CPS42D-, CPS441-, CPS441D-, CPS471-, CPS471D-, CPS491-, CPS491D-, CPS64-, CPS71-, CPS71D-, CPS72-, CPS72D-, CPS76D-, CPS91-, CPS91D-, CPS92-, CPS92D-, CPS96D-, CTS1-, CYK10-, CYP01D-, CYP02D-, CPS171D-, CLS12-, CLS13-, CLS15-, CLS15D-, CLS16-, CLS16D-, CLS21-, CLS21D-, CLS50-, CLS50D-, CLS82D-, CM42-, COS21D-, CPS16D-, CPS13-, CPS12D-, CPS12-, CPS11D-, CPS11-, CPF82D-, CPF82-, CPF81D-, CPF81-, COS51D-, COS22D-
    Region/Country: USA
    Approval Agency: FM

    Explosion Protection
    English
  • InduMax H, Memosens, SmarTec, SmarTec S, TopHit, UniFit H

    Product Code: CLD134-, CLD18-, CLS54-, CLS54D-, CLS82D-, CPA442-, CPS441-, CPS441D-, CPS471-, CPS471D-, CPS47D-, CPS77D-
    Region/Country: USA
    Approval Agency: 3-A Sanitary Standards

    Hygienic Equipment
    English
  • InduMax H, Memosens, SmarTec, SmarTec S, TopHit, UniFit H

    Product Code: CPS77D-, CPS47D-, CPS471D-, CPS471-, CPS441D-, CPS441-, CPA842-, CLS82D-, CLS54D-, CLS54-, CLD18-, CLD134-
    Region/Country: USA
    Approval Agency: 3-A Sanitary Standards

    Hygienic Equipment
    English
  • InduMax H, Memosens, SmarTec, SmarTec S, TopHit, UniFit H

    Product Code: CLD134-, CLD18-, CLS54-, CLS54D-, CLS82D-, CPA442-, CPS441-, CPS441D-, CPS471-, CPS471D-, CPS47D-, CPS77D-
    Region/Country: USA
    Approval Agency: 3-A Sanitary Standards

    Hygienic Equipment
    English
  • UniFit H, TopHit, SmarTec S, SmarTec, ProbFit H, Memosens, InduMax H, CleanFit H

    Product Code: CLS54D-, CLS82D-, CPA442-, CPS441-, CPS441D-, CPS471-, CPS471D-, CLD134-, CLD18-, CLS54-
    Region/Country: USA
    Approval Agency: 3-A Sanitary Standards

    Food Safety
    English

Accessories / Spare parts

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