GroLine Hydroponic Nutrients Monitor for pH, EC, TDS, and Temperature

The HI981420 GroLine Monitor provides 24 hour continuous monitoring of pH, conductivity (EC & TDS), and temperature in hydroponic nutrients 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.

  • High and low alarms with LED indicator.
  • Easy viewing on the large LCD with plant-safe green backlighting.
  • Calibrate pH and EC with a single Quick Cal solution.

One quick glance is all it takes.

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.

Monitor changes over time.

The GroLine Monitor 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.

One probe. Three measurements.

Our 3-in-1 pre-amplified 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.

 

Quick Cal for less maintenance.

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

pH Specifications

pH Range 0.00 to 14.00 pH
pH Resolution 0.01 pH, (0.1 pH)
pH Accuracy ±0.05 pH, (± 0.1 pH)
pH Calibration 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
Temperature Compensation automatic (0.0 to 60.0ºC/ 32.0 to 140.0°)

Conductivity (EC/TDS) Specifications

EC Range 0.00 to 10.00 mS/cm
EC Resolution 0.01 mS/cm
EC Accuracy ±0.1mS/cm (0.00 to 5.00mS/cm); ±0.2mS/cm (5.00 to 10.00mS/cm)
EC Calibration one-point at 1.41 mS/cm or 5.00 mS/cm using auto standard recognition; one-point calibration using quick calibration solution
EC/TDS Temperature Compensation automatic with β set at 1.9%/°C
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 ±2% f.s.

Temperature Specifications

Temperature Range 0.0 to 60.0°C / 32.0 to 140.0°F
Temperature Resolution 0.1°C / 0.1°F
Temperature Accuracy ±0.5°C /±1°F

Specifications

Display 128 x 64 pixel B/W LCD with green backlight
Connectivity USB Type-C
IP Rating IP65
Alarms High and Low with enable/disable option for all parameters
Log Feature Automatic logging for last 30 days at 15 minute interval
GLP Good Laboratory Practice with last 5 pH and EC calibration history
Probe HI1285-8 pH/EC/TDS/temperature polypropylene body, pre-amplified multiparameter probe with internal temperature sensor DIN connector and 2 m (6.6’) cable
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 HI981420 is supplied with: HI1285-8 multiparameter probe, HI50036-0 Quick Cal buffer solution sachet (2), HI700661P Electrode cleaning solution sachets for agriculture (2), 12VDC adapter, instruction manual, Monitor Quality Certificate, & Probe Quality Certificate.
Warranty 2 years (probe 6 months)
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