The Monitor for Hydroponic Nutrients, HI981421 GroLine provides around-the-clock, continuous monitoring of pH, conductivity (EC & TDS), and temperature in hydroponic nutrient solutions. Quick to setup, simple to use, this monitor was designed with Hydroponics, Aquaponics, and Greenhouses in mind. Make your nutrient solution easy to manage with the GroLine Monitor.
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A large clear LCD displays all of your essential readings so you know what your hydroponic nutrients solution is doing 24/7. High and low alarms flash warning you if something needs adjusting.
The Monitor for Hydroponic nutrients automatically logs your results every 15 minutes over the last 30 days. Minimum, maximum, and average values are stored so you can recognize when patterns arise and help prevent future problems.
Our 3-in-1 pre-amplified inline probe measures pH, EC/TDS, and temperature in a single, durable, polypropylene body making the GroLine Monitor easy to handle and easy to set up. The HI1285-9 has a 3/4” threaded connection for insertion into a pipe for flow through monitoring.
A single calibration solution for pH and conductivity makes calibration fast and ensures all of your measurements are accurate all of the time for better plant health and better yield.
Advanced algorithms and greater pH and TDS/ppm accuracy ensure operational consistency and a finer understanding of your plant’s nutritional needs.
Our GroLine Monitor is made by growers and scientists alike who are committed to helping you take your growing operation to the next level.
|pH Resolution||0.01 pH|
|pH Accuracy (@25°C/77°F)||±0.05 pH|
|Temperature Range||0.0 to 60.0°C / 32.0 to 140.0°F|
|Temperature Resolution||0.1°C / 0.1°F|
|Temperature Accuracy (@25°C/77°F)||±0.5°C /±1°F|
|EC Range||0.00 to 10.00 mS/cm|
|EC Resolution||0.01 mS/cm|
|EC Accuracy (@25°C/77°F)||±0.1mS/cm (0.00 to 5.00mS/cm); ±0.2mS/cm (5.00 to 10.00mS/cm)|
|TDS Range||0 to 5000 ppm (TDS conversion factor 0.5 (500 CF)); 0 to 7000 ppm (TDS conversion factor 0.7 (700 CF))|
|TDS Resolution||10 ppm|
|TDS Accuracy (@25°C/77°F)||±2% F.S.|
|Temperature Compensation||pH: automatic (0.0 to 60.0ºC/ 32.0 to 140.0°); EC: automatic with β set at 1.9%/°C|
|Calibration||pH calibration at one or two-point calibration (using pH 4.01,7.01, 10.01 buffers) using auto buffer recognition; one-point calibration using quick calibration solution; EC calibration at one-point at 1.41 mS/cm or 5.00 mS/cm using auto standard recognition; one-point calibration using quick calibration solution|
|Log Feature||Automatic logging for last 30 days at 15 minute interval|
|Alarms||High and Low with enable/disable option for all parameters|
|GLP||Good Laboratory Practice with last 5 pH and EC calibration history|
|Power Supply||12VDC adapter (included)|
|Environment||-5 to 50°C (23 to 122°F); RH max 95% non-condensing|
|Dimensions||125 x 185 x 38 mm (4.92 x 7.28 x 1.49”)|
|Weight||333g ( 11.7oz.)|
|Ordering Information||HI981421 is supplied with HI1285-9 multiparameter probe, Quick Cal buffer solution sachets (2), HI700661 electrode cleaning solution sachets for agriculture (2), 12VDC power adapter, quality certificates and instruction manual.|