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Long Life 12pH Online Ph Sensor With KCl Solid Gel Double Junction

Categories PH ORP Sensors
Brand Name: Daruifuno
Model Number: ASP300
Certification: CE
Place of Origin: China
MOQ: 1 piece
Price: $49-$59
Payment Terms: Western Union, L/C, T/T, MoneyGram
Supply Ability: 100 Unit/month
Delivery Time: 15 days
Packaging Details: Carton and PE foam
Product Name: pH sensor
Product Model: ASP300
Temperature Unit: NTC10K/Pt1000
PH Range: 0~14pH
Reference Electrode: Ag/AgCl
Electrolyte: KCl solid gel
Pressure Range: 0 ~ 2bar
Working Temperature: 0~60℃
Material: ABS/PPS+Glass+Teflon
Mounting Size: 1 inch NPT
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    Long Life 12pH Online Ph Sensor With KCl Solid Gel Double Junction

    Long Life 12pH Online PH Electrode With KCl Solid Gel Double Junction

    The accuracy of the pH electrode depends on two key components: the glass bulb and the junction. The slope, response time and measurement error of the pH electrode are usually determined by the structure, material and processing technology of the two components. The ASP300 series pH electrode developed and produced by Delfino uses a low-impedance hemispherical glass bulb, which has a good response to H+ in the solution. The junction is made of large-area annular porous PTFE, which has a higher flow rate, is not easy to be clogged, and is easy to clean.


    Product NamepH electrode
    Product Model


    pH Range0~14pH
    Pressure Range0~2bar
    Temperature Range0~60℃

    Reference System

    double junction

    Reference Electrode





    KCl solid gel


    ABS+Glass+Teflong(PPS customized)

    Temperature Unit


    Mounting Size

    A British 1 NPT of the head and the tail for each install thread;

    Insert depth 100(including cleaning plug 115)


    Diameter 35mm/Total length 260 mm(include the cleaning cover)


    The composite electrode is composed of internal reference electrode, internal reference solution, electrode bulb, glass rod, external reference electrode, external reference solution, liquid interface, shell, electrode cap, electrode lead and socket.The workmanship of each part of the ASP300 series electrode is very delicate.

    • The reference electrode adopts Ag/AgCl, the potential is stable, and the temperature coefficient is small.
    • The reference solution is a KCl solid gel, which is not easy to be lost, has a high concentration, a double connection structure, and a long service life.
    • The liquid junction is the connecting part that communicates the external reference solution and the measured solution. This pH electrode uses large-area annular porous PTFE, which has a fast penetration rate, a fast response, and is not easy to be blocked.
    • The glass support rod and the glass bulb adopt glass with the same expansion coefficient. The glass bulb is hemispherical low-impedance glass with high strength and not easily broken.


    ASP300 series pH electrodes are widely used and can be used in general industrial environments. It is most commonly used in the pretreatment of water in reverse osmosis systems, recovery systems, cooling towers, scrubbers, and factory sewage treatment systems.

    However, for different environments, the chemical composition, flow rate, temperature, pH range and pollutant level must be considered to determine the most suitable pH electrode.


    The installation of pH electrodes used in industrial environments is very important. This plastic-cased pH electrode has mounting threads on both ends, and the size is 1-inch NPT, which is easy to install and suitable for different environments. Whether it is installed in a pipeline, flow-through installation or submerged installation is all possible.

    Know more about the sensor, Delfino pH ORP Sensor Manual.pdf

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