Hanna Instruments HI 8051 Series
Panel mount Acid based Fertigation Controller with dual pH control

  • Fertigation (fertilizer and irrigation) controllers
  • Time or volume control with up to 10 irrigation programs for up to 32 sectors.
  • 4 fertilizer dosing control based on EC, volume or ratiometric
  • Agitators controller
  • Filter cleaning detection and control
  • Up to 2 pH and up to 3 EC probes connected through analog transmitters
  • pH and EC reading temperature compensated on transmitter level
  • Solar radiation, wind, temperature sensors
  • Mixing input water control
  • Alarms for controlled parameters, water presence, pH or EC out of range and self system diagnostics
  • Logging organized on three levels, user selectable
  • RS232 connection to PC
Click here for a larger image of the Hanna Instruments HI8051

The Hanna Instruments HI 8051 Panel mount Acid based Fertigation Controller with dual pH control provides up to 10 irrigation programs to irrigate up to 24 sectors using time or volume control. Each irrigation program has one pH and one EC setpoint. The start condition of the program, the irrigation sectors and the time or volume for each sector are user defined. The irrigation water is pH corrected based on the pH control with acid or alkaline solution and can contain nutrients for crops based on up to 4 fertilizer receipts. Fertilizer dosing is permormed based on the EC, volumetric or ratiometric control. Another important feature is the correction of irrigated water volume or time based on accumulated solar radiation or manually requested by user. Agitator control and filter cleaning control is performed automatically.

The Hanna Instruments HI 8051 reads up to 3 EC probes, one to verify the water incoming EC, and the other two redundant in-line for safety, to measure the current irrigation water EC. The Hanna Instruments HI 8051's two pH inputs are mounted in-line redundant for safety to read the irrigation water pH. This instrument provides an alarm system and logging organized on three user selectable levels. An important added feature is the Hanna Instruments HI8051 ability to mix 3 sources of incoming water. Fresh water, reused water and all dosing are performed based on the motorized valves that are activated by motors that allow different flows of the fertilizers, acid and alkaline solutions used for pH correction.

Ordering Information
Model Description Buy Online Price
HI8051-0300D  Hanna Instruments HI 8051-0300D Panel mount Acid based Fertigation Controller with dual pH control Discontinued
Optional Accessories
HI710005 Hanna Instruments HI 710005 Power Adapter for Hanna Meters, 115 Vac to 12 VDC Not Available
HI98143-22 Hanna Instruments HI 98143-22 pH and EC Transmitter with Galvanic Isolated Output for HI 8000 series Buy Now Sale $314.50
(Reg. $407.00)
Replacement Probes & Electrodes
HI1001 Hanna Instruments HI 1001 pH electrode, double-junction BNC connector Not Available
HI3001 Hanna Instruments HI 3001 Flow-thru Conductivity Probe with ATC and 3 meter cable Not Available
Calibration and Buffer Solutions
HI7004L Hanna Instruments HI 7004L pH 4.01 buffer solution @ 25°C, 0.46 Liter bottle Not Available
HI7007L Hanna Instruments HI 7007L pH 7.01 buffer solution @ 25°C, 0.46 Liter bottle Not Available
HI7039L Hanna Instruments HI 7039L 5000 μS/cm conductivity solution (μmho/cm), 500 mL Bottle Not Available
HI7061L Hanna Instruments HI 7061L General Purpose Cleaning Solution for electrodes, 500 mL bottle Buy Now Sale $10.82
(Reg. $14.00)
HI70300L Hanna Instruments HI 70300L Storage solution for pH/ORP electrodes, 0.46 Liter Bottle Buy Now Sale $10.82
(Reg. $14.00)