• GroLine pH Dosing Systems
  • GroLine pH Dosing Systems
  • GroLine pH Dosing Systems
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HANNA Instruments

GroLine pH Dosing System

GroLine pH Dosing System

$499.99
$499.99
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The GroLine pH Dosing System HI981412 by HANNA Instruments easily assimilates into a nutrient/fertilizer system for soil and hydroponics. Simply insert the probe and injection valve in-line with the re-circulation pump and provide the chemical to be dosed.

Maintaining the correct pH of plant soil or hydroponic nutrient solutions is an ongoing task. Macro and micro nutrients, as well as calcium and magnesium bloom boosters, require the correct pH for absorption into the plants root system. 

  • Available in multiple configurations for easy integration into your setup.
  • Programmable alarm system and multicolored LCD display.
  • Perfect for small hydroponics systems.

The powerful built-in peristaltic pump uses a stepper motor which does not have any gears or brushes providing for a long life with little maintenance.

Automatic Proportional Pump Control:  The peristaltic dosing pump can be controlled by simple on/off or more advanced proportional control which helps prevents overshooting of the set point. The dosing pump flow rate is adjustable from 0.5 to 3.5L/h, allowing for better control in maintaining a desired set point.

Acid Tank Level/Flow Switch Input: A connection to an optional level controller or flow switch. This input can be used to disable the dosing pump when there is no chemical left in the reservoir tank or there is no flow due to the pump being turned off.

Multi-colored LCD: Provides a quick way to see the status of the pool controller. The display will show green when operation normally and red while in an alarm state.

Quick Connect DIN Connector: Creates a waterproof seal with the meter making it ideal for reducing electrical noise issues with the connection caused by humid environments.

  • Built-in amplifier
  • PVDF body
  • 1/2” threaded fitting for insertion to an in-line “T” fitting or the flow cell

The HI981412 uses the HI10063 amplified probe that incorporates both pH and temperature sensors and connects to the controller with a single waterproof Quick Connect DIN connector.