HI GroLine pH, EC/TDS, Temp Monitor

SKU: HI981420-01

395.00 395.0 USD 395.00


The HI981420 GroLine Monitor for Hydroponic Nutrients provides around-the-clock, continuous monitoring of pH, conductivity (EC & TDS), and temperature in hydroponic nutrient solutions. 

    This combination does not exist.

    HI GroLine pH, EC/TDS, Temp Monitor

    The HI981420 meter from the GroLine line provides continuous readings of pH, conductivity (EC and TDS), and temperature of nutrient solutions used in hydroponics.

    With simple setup and operation, this meter was designed with hydroponics and greenhouse applications in mind. Simplify your measurements of nutrient solutions with this meter from the GroLine line.

    • Get 24/7 pH/EC measurements for consistent, optimized cultures.
    • Professional accuracy with the Good Laboratory Practice (GLP) feature.
    • Calibrate pH and EC with a single Quick Cal solution.

    It is enough to take a brief look

    All essential parameters are displayed on the large LCD screen so that nutrient activity is observed 24/7. High and low value alarms alert the user if something requires adjustment.

    Measurements change over time

    The GroLine meter automatically records every 15 minutes for a period of 30 days. The minimum, maximum, and average values ​​will be recorded to facilitate the detection of behavior patterns so that if problems arise, they can be easily resolved.

    Pmprobe three measurements

    Our 3-in-1 amplified probe measures pH, EC/TDS, and temperature and features a single polypropylene body, making the unit easy to assemble and easy to handle.

    Professional level accuracy

    Advanced algorithms and greater accuracy in pH and TDS/ppm measurements ensure greater consistency in operation and a better understanding of the nutritional needs of your plants.

    Quick Cal function to require less maintenance

    The use of a single calibration solution for pH and conductivity makes this task easy and ensures high accuracy in all measurements for a healthy and productive crop.

    Enhanced Measurements

    Our GroLine meter has been designed by farmers and scientists committed to helping you take your crops to the next level.

    General characteristics

    • 3 sensors are integrated into a single probe: pH electrode with renewable junction, amperometric EC/TDS sensor, and internal temperature sensor for measurement compensation.
    • IP65 Rated Housing - Designed to withstand the harsh environments found in agriculture.
    • Wide pH range: pH measurement from 0.00 to 14.00.
    • Adjustable EC to TDS/ppm conversion factor: selectable as either 0.5 or 0.7 value.
    • Automatic temperature compensation: all readings are compensated for variations in temperature, which is displayed on the screen in units o C o  o F, accompanied by the readings of pH, EC, or TDS.
    • Large LCD Display with Green Illumination: The LCD display can display all three essential hydroponic nutrient parameters simultaneously, it can display them in 3-second cycles individually, or it can display a real-time graph with options for selecting the measurement and retrieval of memory records.
    • Data log for 30 days: stores the data every 15 minutes for 30 days including the minimum, maximum and average values.
    • Data download: The USB-C port allows data to be downloaded to a USB stick or PC.
    • High and low alarms: warn the user when the nutrient solution falls outside the allowed ranges, displaying the values ​​intermittently and with an appropriate message.
    • Ambient light sensor: for automatic regulation of the screen light.

    Weight (lbs)0.75
    Length (in)4.92
    Width (in)7.28
    Height (in)1.49
    pH range0.00 to 14.00 pH
    pH resolution0.01pH, (0.1pH)
    pH Accuracy (@25ºC/77ºF)±0.05pH, (±0.1pH)
    pH calibrationone or two points (using the solutions of pH 4.01,7.01, 10.0) with automatic recognition function; one point using the quick calibration solution.
    temperature compensationautomatic (0.0 to 60.0ºC/ 32.0 to 140.0°F)
    EC range0.00 to 10.00mS/cm
    EC Resolution0.01mS/cm
    CE accuracy±0.1mS/cm (0.00 to 5.00mS/cm); ±0.2mS/cm (5.00 to 10.00mS/cm)
    EC CalibrationOne point at 1.41 mS/cm or 5.00 mS/cm using automatic solution recognition; one point using the quick calibration solution.
    Temperature compensation for EC/TDS readingsautomatic with ß selected at the value 1.9%/°C
    TDS Range0 to 5000 ppm (TDS conversion factor at 0.5 (500 CF)); 0 to 7000 ppm (TDS conversion factor at 0.7 (700 CF))
    TDS Resolution10ppm
    TDS Accuracy±2% of the full scale
    temperature range0.0 to 60.0°C / 32.0 to 140.0°F
    temperature resolution0.1°C / 0.1°F
    temperature accuracy±0.5°C /±1°F
    Screen128 x 64 pixel B/W LCD screen with green illumination
    connectivityUSB Type-C
    IP RatingIP65
    alarmsHigh and low with an on/off option for all parameters
    record functionAutomatic for 30 days at 15-minute intervals
    LPGGood Laboratory Practices with a history of the last 5 calibrations for pH and EC
    ProbeHI1285-8 multiparameter probe for pH/EC/TDS/temperature, with a polypropylene body, amplified, with internal temperature sensor, DIN connector, and 2 m. (6.6′) of wire.
    Electrical power supply12 VDC adapter (included)
    Environmental conditions-5 to 50°C (23 to 122°F); HR max. 95% non-condensing