Analog non-glass pH sensor
Tophit CPS491

Tophit CPS491- Analog non-glass pH electrode for heavily soiled media ©Endress+Hauser
Tophit CPS491- Analog non-glass pH sensor for chemical processes, paper and paint production ©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 CPS491- Analog non-glass pH electrode for heavily soiled media
  • Tophit CPS491- Analog non-glass pH sensor for chemical processes, paper and paint production

ISFET electrode for heavily polluted media in chemical processes, paper or paint production

Tophit CPS491 is the analog specialist for fibrous media or media with a high content of suspended solids such as dispersions, precipitation reactions or emulsions. Its unbreakable shaft ensures a long operating life while the open aperture prevents fouling and guarantees reliable measurement under harsh process conditions.

Additional components

  • Benefits

    • Unbreakable for highest product safety

    • Open aperture for application in heavily soiled media

    • Application possible at low temperatures

    • Low maintenance thanks to long calibration intervals

  • Field of application

    • Chemical processes

    • Pulp and paper industry

    • Contaminated media and suspended solids
      - Dispersions
      - Precipitation
      - Emulsions

    With ATEX, FM, and CSA approval for application in hazardous areas.

Features and specifications

Back

Details

  • Measuring principle

    ISFET sensor

  • Application

    - process applications - non-glass, break-proof - low temperatures - min. conductivity >500µS/cm - emulsions, suspensions, organic solvents

  • Characteristic

    - rapid response at low temperatures - stabilised gel insensitive to contamination - lower amount of maintenance required than with glass - overhead installation

  • Measurement range

    pH 0-14

  • Measuring principle

    - open aperture - double gel reference

  • Design

    - all shaft lengths with temperature sensor - advanced gel technology

  • Material

    PEEK / metal oxide / Perfluorelastomere

  • Dimension

    Diameter: 12 mm (0.46 inch)
    Shaft lengths: 120, 225, 360 and 425 mm
    (4.68,8.77,14.04 and 16,57 inch)

  • Process temperature

    max. 110°C
    (230°F)

  • Process pressure

    max. 10 bar
    (145 psi)

  • Temperature sensor

    Optional with integrated Pt1000.

  • Ex certification

    ATEX
    FM

  • Connection

    Top68 connection head

  • Ingres protection

    IP68

Documents / Manuals / Software

  • Technical Information Tophit CPS491/CPS491D

    ISFET Sensor for long-term stable pH measurement in media with high
    dirt loads
    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
  • 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
  • TopHit, OxyMax W, OxyMax H, OrbiSint, OrbiPore, OrbiPac, Memosens, Liquiline, InduMax P, ConduMax W, ConduMax H, Chloromax, CeraLiquid, CeraGel

    Product Code: CPF81D-, CPF82D-, CPS11D-, CPS12D-, CPS16D-, CPS171D-, CPS41D-, CPS42D-, CPS441D-, CPS471-, CPS471D-, CPS491-, CPS71D-, CPS72D-, CPS76D-, CPS91D-, CPS92D-, CPS96D-, COS81D-, CCS120D-, CCS142D-, CCS50D-, CCS51D-, CLS15D-, CLS16D-, CLS21D-, CLS50D-, CLS82D-, CM442-, CM442R-, CM444-, CM444R-, CM448-, CM448R-, COS21D-, COS22D-, COS51D-
    Region/Country: Canada, USA
    Approval Agency: CSA

    Explosion Protection
    English
  • 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, 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
  • 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, 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
  • SmarTec, TopHit, OxyMax W, OxyMax H, OrbiSint, OrbiPore, OrbiPac, Memosens, Liquiline M, InduMax P, InduMax H, ConduMax W, ConduMax H, Ceramax, CeraLiquid, CeraGel

    Product Code: CLD18-, CPS11D-, CPS12-, CPS12D-, CPS16D-, CPS341D-, CPS41-, CPS41D-, CPS42-, CPS42D-, CPS441-, CPS441D-, CPS471-, CPS471D-, CPS491-, CPS491D-, CPS71-, CPS71D-, CPS72-, CPS72D-, CPS76D-, CPS91-, CPS91D-, CPS92-, CPS92D-, CPS96D-, CLS12-, CLS13-, CLS15-, CLS15D-, CLS16-, CLS16D-, CLS21-, CLS21D-, CLS30-, CLS50-, CLS50D-, CLS52-, CLS54-, CLS54D-, CLS82D-, CM42-, COS21-, COS21D-, COS22D-, COS51D-, CPF81-, CPF81D-, CPF82-, CPF82D-, CPS11-
    Region/Country: Russia
    Approval Agency: GOST
    Approval Number: 55929

    Metrology
    Russian
  • Viomax, Turbimax, TopHit, OxyMax W, OxyMax H, OrbiSint, OrbiPore, OrbiPac, OEM, Liquiline M, Liquiline, Isemax, InduMax P, InduMax H, ConduMax W, ConduMax H, Chloromax, Ceramax, CeraLiquid, CeraGel

    Product Code: CPS441D-, CPS441-, CPS42D-, CPS42-, CPS41D-, CPS41-, CPS341D-, CPS12D-, CPS12-, CPS11D-, CPS11-, CPF82D-, CPF81D-, CPS471-, CPS471D-, CPS491-, CPS491D-, CPS71-, CPS71D-, CPS72-, CPS72D-, CPS91-, CPS91D-, CPS92-, CPS92D-, CUS51D-, CPF81-, CAS40D-, CAS51D-, CCS142D-, CLS12-, CLS13-, CLS15-, CLS15D-, CLS16-, CLS16D-, CLS19-, CLS21-, CLS21D-, CLS30-, CLS50-, CLS50D-, CLS52-, CLS54-, CM42-, CM442-, CM444-, CM448-, COS22-, COS22D-, COS51D-, COS61-, COS61D-
    Region/Country: Belarus
    Approval Agency: BELGIM
    Approval Number: 7548

    Metrology
    Russian

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