pH/EC/TDS Multiparameter Probe


The HI1288 is a 3-in-1 pre-amplified multiparameter probe that measures pH, EC/TDS, and temperature within a single polypropylene body. The pH portion of this probe is constructed with a cloth junction, maintenance free polymer gel electrolyte, and a low temperature glass sensing bulb. The EC/TDS portion of this probe utilizes two graphite sensors for an amperometric determination of conductivity and total dissolved solids. A built-in temperature sensor ensures that both pH and EC/TDS readings are compensated for temperature variations in both standards and samples. The design consideration for the HI1288 is ideal for measuring the pH, EC/TDS, and temperature in greenhouses, hydroponics, environmental monitoring, water treatment, wastewater treatemnt and boilers and cooling towers. The HI1288 is designed for use with Hanna’s HI991300 and HI991301 portable multiparameter meters.

•  Amperometric EC/TDS sensor
•  Built-in temperature sensor
•  Pre-amplified pH electrode

Amperometric EC/TDS Sensor
•  EC/TDS readings are performed by a two-pin amperometric sensor.
•  An alternating voltage is applied to the sensor and the amount of current that passes between the two stainless steel pins determines the amount of dissolved ionic solids present.

  Built-In Temperature Sensor
•  pH and EC/TDS readings must be temperature compensated in order to obtain accurate results.
•  The built-in temperature sensor of the HI1288 provides a speedy temperature reading which is then used to adjust the pH and EC/TDS results accordingly.

  DIN Connector
•  The HI1288 uses a DIN connector.
•  This type of connector is generally proprietary to the meters they are supplied with and may not be interchangeable.
•  The HI1288 is made for use with Hanna’s HI991300 and HI991301 portable multiparameter meters.

  Polypropylene Body
•  The polypropylene body of the HI1288 houses all three sensors within a sturdy, single body design.
•  This body material is suitable for a wide range of applications and excels in measurements with portable meters due to its durability.
•  The fins around the spherical glass pH bulb minimizes breakage due to accidental bumping or dropping of the electrode.
•  The polypropylene plastic is a high quality plastic that is chemically resistant to many aggressive chemicals.

  Pre-Amplified pH Electrode
•  The pH electrode circuit has a built-in amplifier that serves to reduce the effects of electrical noise on the high impedance pH measurement.
•  Electrical noise can come from motors and pumps that are common in greenhouses.
•  The single reference junction design of the pH electrode has a cloth junction that allows ion movement between the inner gel electrolyte and the sample being measured.
•  The advantage of the cloth junction is that it can be extracted from the probe, exposing a fresh surface when readings become drifty or erratic.
•  These features make this probe ideal for use in fertilizer solutions.


    Body Material                    :  polypropylene
    Reference                          :  single, Ag/AgCl
    Junction / Flow Rate         :  cloth
    Electrolyte                         :  gel
    Range                               :  pH: 0 to 13, EC
    Max Pressure                     :  0.1 bar
    Tip Shape                         :  spheric (8 mm)
    Recommended Operating

Temperature                      :


0 to 50°C (32 to 122°F) – LT

    Temperature Sensor          :  yes
    Matching Pin                     :  no
    Amplifier                           :  yes
    Digital                               :  no
    Cable                                :  7-pole; 1 m (3.3′)
    Connection                       :  DIN
    Applications                      :  agriculture, boilers, cooling towers, environmental monitoring, greenhouses, hydroponics, water treatment
    Warranty                           :  6 months

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To make your order, please contact us at  info@polyscientific.com.my or call us at +6 06 3350 690

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