HI GroLine pH/EC/TDS Multiparameter Probe (Inline)

SKU: HI1285-9

290.00 290.0 USD 290.00


This is a multi-parameter probe that measures pH, EC/TDS, and temperature. It features a DIN connector and a renewable junction.

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    HI GroLine pH/EC/TDS Multiparameter Probe (Inline)

    The Hanna Instruments GroLine pH/EC/TDS Multiparameter Replacement Inline Probe for use with HI981420 was specialized for hydroponics with a renewable junction for extended life.

    The Hanna Instruments GroLine pH/EC/TDS Multiparameter Replacement Inline Probe for use with HI981420is a multiparameter probe that measures pH, EC/TDS, and temperature in one convenient, rugged probe. Use with the HI981421 GroLine Monitor to provide around-the-clock, continuous monitoring of pH, conductivity (EC & TDS), and temperature in hydroponic nutrient solutions.

    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.

    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 HI1285-8 provides a speedy temperature reading which is then used to adjust the pH and EC/TDS results accordingly.

    PVC Body
    The PVC body of the HI1285-9 houses all three sensors within a sturdy, single-body design. This body material is suitable for a wide range of applications and excels in harsh grow environments due to its durability. PVC is chemically resistant to many aggressive chemicals and minimizes breakage due to accidental bumping or dropping of the electrode

    Weight (lbs)1
    Length (in)9.6
    Width (in)2
    Height (in)1.9
    Range0 to 12 pH, EC
    BodyPVC, 0.75" (19.05 mm) NPT
    Matching PinYes
    Max Pressure8 bar
    Operating Temperature32 to 144°F (0 to 60°C)
    Temperature SensorYes
    Outer Diameter1.3" (32 mm)
    Cable7-pole, 9.9' (3 m)