Tools to Make Growing Hydroponics Easier
Hanna Instruments HI 5000: The HI 5000 is an all-in-one, ready to use control system. Compact and versatile, the Mini Fertigator brings precision nutrient and acid control to professional grower and advanced home grower alike.
The Mini Fertigator is easy to install and comes completely pre-assembled. To install the unit, simply attach two pipes and plug into the power cord. No wiring and no assembly!
The HI 5000 Precisely Controls fertilizer injection (EC) and monitors pH automatically. Up to 5 stock tanks can be utilized for multiple crops and customized blending. System is designed to control fertilizer injection within a flow range of less than 1GPM up to 35GPM.
To inject nutrients, the mini Fertigator uses a venturi so there are no high-maintenance peristaltic pumps to worry about. Hanna's included Blackstone pump can handle full-strength acid, so there is no need to risk an accident with dilution. Hanna's flat-tipped probes are also highly resistant to fouling and clogging.
The automated dosing feature allows the grower to optimize growth without spending half the time measuring, mixing and dosing. The Mini Fertigator allows the grower to set precision dosing during vegetative and fruiting stages, maximizing harvest and profit.
Hanna Instruments HI 2500: The HI 2500 Mini Controller Fertigation System is perfect for any size grower. Automatically control acid and nutrients levels.
- Easy Installation
- Controls pH/EC or pH/TDS
- No peristaltic pumps
- Industrial grade probes
- Less maintenance stays in calibration longer
- Works with any type of hydroponic system
The HI 2500 comes with a HI 1001 pH & TDS Probe and the HI 7634-00 EC & TDS Probe. The HI 1001 probe comes with BNC connector that makes connection to any pH/ORP meter quick and easy: models with 3 or 5 meters (9.8 to 16 feet) cable are available. The HI 7634-00 is an amperometric probe, provided with built-in temperature sensor for automatic compensation, 2m (6.6') cable and a PEI (PloyEther-Imide) protective sleeve. The HI 2500 also comes with probes and power cords pre-wired and ready for use.
Hanna Instruments HI 10000 Series: HI 10000 Fertilizer Injection System precisely monitors and controls fertilizer concentrations and pH for all types of greenhouse and field agricultural irrigation applications. Unlike flow-driven systems of the past, the HANNA Fertigation System continuously measures the actual EC and pH of the flow-through, and precisely adjusts the concentration of fertilizer into the system. The HANNA Fertigation System is a bypass system which will not interfere with main line flow and thus does not impede line flow or pressure. This unit will accurately inject fertilizer in flow rates ranging from 5GPM to 300GPM.
HI 8000 Series Controller included with the system has 10 programs that allow the user to set various EC and pH values for a variety of plants. Each system allows the injection of a single fertilizer and 1 minors or (mild) acid. If preferred, each fertilizer injector can be set to a specific percent, allowing customized fertilizer mixtures from salts of the basic elements N-P-K, providing a considerable cost savings.
The HANNA Fertigation System controls up to 8 irrigation valves (either sequentially or in groups of 2, 3, up to 8 at once) for complete automation of the fertigation process. Programs can be triggered by time, external switching, and/or flow, (e.g. spot watering - timer adjustable). HI 8000 is also capable of controlling an external agitator, handy for mixing fertilizer solutions. A backflow control allows the filtration system to be flushed and cleaned. Alarm controls and redundant monitoring help reduce error and unexpected events. This system can be synchronized with a GSM module which allows for remote monitoring and control from a PC.
Hanna Instruments HI 8001: The HI 8001 fertigation controller provides up to 10 programs to irrigate up to 32 sectors using time or volume irrigation 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. Correction of time or volume of irrigated water can be based on accumulated solar radiation or can be manually requested by user. Agitator control and filter cleaning control are performed automatically. The instrument reads up to 3 EC probes, one to verify the incoming water EC, and the other two are in-line redundant for safety to measure the current irrigation water EC. The two pH electrodes are mounted in-line redundant for safety to read the irrigation water pH. The instrument provides an alarm system and logging organized on user selectable three levels.
Irrigation control: Irrigation control differs based on the type of control: by irrigation water volume or by irrigation time; the number of sectors that have to be irrigated, the available sources of water for irrigation – one or more with or without reusing the irrigation drain water. Irrigation control is started by opening the irrigation valves and starting the main irrigation pump. The control of all these elements is performed by the controller based on concepts of irrigation programs.
Irrigation programs: Up to 10 irrigation programs can be set by the user with different irrigation parameters: irrigation periods, type of irrigation control, irrigated sectors and volume or irrigation time specified for each sector, conditions to start irrigation such as time, accumulated solar radiation, low level in tanks (hydroponic crops), temperature variations, linked to another program, priority of program, number of repetitions. For irrigation water, each program has a defined pH set point, EC set point (if the quantity of fertilizer is dosed according with conductivity), and receipt of fertilizers. Control of agitators is specified by programs according with the irrigation periods.
Irrigation water: The quality of irrigation water is assured by proper control of pH and the quantity of nutrients (fertilizers) present in irrigation water.
Fertilization control: Fertilizer can be dosed during irrigation using the Venturi tubes principal or with motorized valves. The control of the quantity of dosed fertilizer can be performed using the volume counters. The system supports dosing from up to 4 fertilizer tanks with specific receipts. The concentration of the fertilizer in irrigation water can be controlled based on the conductivity reading, proportional with irrigation water based on the receipt or ratiometric, in which case the certain quantity of fertilizers are added with the amount of programmed water
pH control: The pH control is performed in order to adjust the pH of water to the irrigation program set point. The pH correction can be performed with alkaline or acid solution based on the characteristic of the incoming water.The control of pH and EC is performed with PID, PI or proportional control. The tuning of the PID control can be accomplished by the user manually, or automatically by the PID auto-tuning feature.
Agitators and filter cleaning: The automatic control of agitators used in fertilizers tanks and filter cleaning system complete the needs of a standard fertigation system. In order to keep the fertilizer concentration constant before and during the irrigation program, the fertilizers are mixed in their tanks based on the agitators program. The system can manage up to two filters mounted to protect the probes and in-line dosing elements. With differential presostates, the filters are monitored and when necessary, the irrigation programs are automatically suspended and washer filter cleaning is started. This process removes any deposits and sediments that may appear on filters to increase the systems life.
Redundancy of EC and pH probes: For safety reasons, the systems can be equipped with 2 conductivity probes and two pH electrodes in redundancy so that the system can generate an alarm in the case of reading differences between them. A third conductivity probe can be mounted to verify and compensate the incoming water conductivity.
Logging system: The logging of the controller can be selected on three levels: input reading variations, statistics of reading (average of pH and EC) or events (start of programs, opening valves, …).
Alarm system: The alarms of these systems are related to measured water quality parameters like conductivity and pH: out of range, differential reading between redundant probes; over dosing of conductivity or acid or alkaline correction solution, tanks at low level or no dosing detected by counter movement. Similar alarms can be generated after the units self-diagnostic tests are run.
Sensor connections: All the sensors: EC, pH, temperature are connected to the controller via transmitters. pH and EC are temperature compensated on the transmitter level. The output of analog transmitters can be calibrated at two points for pH and conductivity. Also, the controller offers a calibration in two points for pH and one point for conductivity.
User interface and digital connection: The user interface is based on an 4 x 20 character line LCD, organized for settings and consultancy. The UI has multi-language support. The RS232 connection permits the connection to a PC (dedicated PC software HI 800104).
Internal back-up system: The systems internal back-up power system offers a special feature; in the case of losing external power, the controller will stop the irrigations and memorize the irrigation programs that were not performed. The controller will start from the uncompleted programs after power has been restored. The programs will be executed based on their priority level with full respect of the quantity of irrigation water, pH level, and concentration of fertilizers. Additional features that can be found are control of the external power supply and control of mixing of different water sources (clean water, drain irrigation water).