{"product_id":"hi-8051-0300d","title":"HANNA HI 8051-0300D  Fertigation Control System panel mount. fertilization control by EC. by volume. ratio","description":"\u003cdiv id=\"Product-Body\"\u003e\n\u003cul\u003e\n\u003cli\u003eFertigation (fertilizer and irrigation) controllers\u003c\/li\u003e\n\u003cli\u003eTime or volume control with up to 10 irrigation programs for up to 32 sectors\u003c\/li\u003e\n\u003cli\u003e4 fertilizer dosing control based on EC. volume or ratiometric\u003c\/li\u003e\n\u003cli\u003eAgitators controlled\u003c\/li\u003e\n\u003cli\u003eFilter cleaning detection and control\u003c\/li\u003e\n\u003cli\u003eUp to 2 pH and up to 3 EC probes connected through analog transmitters\u003c\/li\u003e\n\u003cli\u003epH and EC reading temperature compensated on transmitter level\u003c\/li\u003e\n\u003cli\u003eSolar radiation. wind. temperature sensors\u003c\/li\u003e\n\u003cli\u003eMixing input water control\u003c\/li\u003e\n\u003cli\u003eAlarms for controlled parameters. water presence. pH or EC out of range and self system diagnostics\u003c\/li\u003e\n\u003cli\u003eLogging organized on three levels. user selectable\u003c\/li\u003e\n\u003cli\u003eRS232 connection to PC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe HI 8051 fertigation controller 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 instrument 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 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 this models 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.\u003c\/p\u003e\n\u003cp\u003e\u003cbig\u003eIrrigation control\u003c\/big\u003e\u003c\/p\u003e\n\u003cp\u003eIrrigation 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.\u003c\/p\u003e\n\u003cp\u003eIrrigation 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.\u003c\/p\u003e\n\u003cp\u003e\u003cbig\u003eIrrigation programs\u003c\/big\u003e\u003c\/p\u003e\n\u003cp\u003eUp 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.\u003c\/p\u003e\n\u003cp\u003e\u003cbig\u003eIrrigation water\u003c\/big\u003e\u003c\/p\u003e\n\u003cp\u003eThe quality of irrigation water is assured by proper control of pH and the quantity of nutrients (fertilizers) present in irrigation water.\u003c\/p\u003e\n\u003cp\u003e\u003cbig\u003eFertilization control\u003c\/big\u003e\u003c\/p\u003e\n\u003cp\u003eFertilizer 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. \u003cbr\u003eThe system supports dosing from up to 4 fertilizer tanks with specific receipts.\u003c\/p\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003e\u003cbig\u003epH control\u003c\/big\u003e\u003c\/p\u003e\n\u003cp\u003eThe pH control is performed in order to adjust the pH of water to the irrigation program set point. \u003cbr\u003eThe pH correction can be performed with alkaline or acid solution based on the characteristic of the incoming water.\u003c\/p\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003e\u003cbig\u003eAgitators and filter cleaning\u003c\/big\u003e\u003c\/p\u003e\n\u003cp\u003eThe automatic control of agitators used in fertilizers tanks and filter cleaning system complete the needs of a standard fertigation system.\u003c\/p\u003e\n\u003cp\u003eIn 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.\u003c\/p\u003e\n\u003cp\u003eWith 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.\u003c\/p\u003e\n\u003cp\u003e\u003cbig\u003eRedundancy of EC and pH probes\u003c\/big\u003e\u003c\/p\u003e\n\u003cp\u003eFor 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.\u003c\/p\u003e\n\u003cp\u003e\u003cbig\u003eLogging system\u003c\/big\u003e\u003c\/p\u003e\n\u003cp\u003eThe 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. …).\u003c\/p\u003e\n\u003cp\u003e\u003cbig\u003eAlarm system\u003c\/big\u003e\u003c\/p\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003e\u003cbig\u003eSensor connections\u003c\/big\u003e\u003c\/p\u003e\n\u003cp\u003eAll the sensors: EC. pH. temperature are connected to the controller via transmitters. \u003cbr\u003epH 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.\u003c\/p\u003e\n\u003cp\u003e\u003cbig\u003eUser interface and digital connection\u003c\/big\u003e\u003c\/p\u003e\n\u003cp\u003eThe user interface is based on an 4 x 20 character line LCD. organized for settings and consultancy. The UI has multi-language support.\u003c\/p\u003e\n\u003cp\u003eThe RS232 connection permits the connection to a PC (dedicated PC software HI 800104).\u003c\/p\u003e\n\u003cp\u003e\u003cbig\u003eInternal back-up system\u003c\/big\u003e\u003c\/p\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003eAdditional 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).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder Information:\u003c\/strong\u003e\u003cbr\u003eEach HI 8000 Series model is supplied instructions.\u003cbr\u003e\u003cbr\u003e\u003cbig\u003eChoose your configuration\u003c\/big\u003e\u003cbr\u003e\u003cstrong\u003eHI 8051-0300U\u003c\/strong\u003e Acid based fertigation controller with dual pH control. differential EC control. actuator control. multiple dosing and irrigation pump control. panel mount. 24 sectors. English. 115V.\u003cbr\u003e\u003cstrong\u003eHI 8051-0300D\u003c\/strong\u003e Acid based fertigation controller with dual pH control. differential EC control. actuator control. multiple dosing and irrigation pump control. panel mount. 24 sectors. English. 230V.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"TabbedPanels1\" class=\"TabbedPanels\"\u003e\n\u003cul class=\"TabbedPanelsTabGroup\"\u003e\n\u003cli class=\"TabbedPanelsTab TabbedPanelsTabSelected\"\u003eSpecifications\u003c\/li\u003e\n\u003cli class=\"TabbedPanelsTab\"\u003eAccessories\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"TabbedPanelsContentGroup\"\u003e\n\u003cdiv class=\"TabbedPanelsContent TabbedPanelsContentVisible\"\u003e\n\u003ctable class=\"spec_table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eIrrigation Control\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eTime\/volume control. 10 programs\/5 priority levels with up to 99 repetition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIrrigation Start Condition\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eby Time. by solar radiation. by 5 external tank low level\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFertilization Control\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eby EC. by volume. ratiometric\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFertilizers\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eup to 4 motorized valves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Control\/Correction\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eacid or alkaline. motorized valves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAgitators Control\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eyes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Control\/Cleaning\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e2 differential presostate\/2 filter cleaning relays\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFertilizer Tank Levels\/Counters Control\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003elevel and counters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIrrigation Counter\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eyes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcid\/Alkaline Tank Level\/Counter Control\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003elevel and counter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEC Inputs\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eup to 2. 0.0 to 10 mS\/cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Inputs\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e1. 0.0 to 14.0 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature\u003cbr\u003eCompensation\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eEC. pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Radiation Input\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eno\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWind Speed\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eno\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Power Back-up\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eno\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIrrigated Sectors\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eup to 24\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMixing Source of Water\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eyes. 3 sources\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePC Connectivity\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eRS232\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarms\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eyes. user selectable levels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLogging\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eyes. three levels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e115V\/220V ±10% 50Hz\/60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e178 x 260 x 116 mm (7.1 x 10.4 x 4.6”)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e3.4 Kg (7.5 lb.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable class=\"spec_table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003cth\u003eElectrodes\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"http:\/\/hannainst.com\/usa\/prods2.cfm?id=017003\u0026amp;ProdCode=HI%201001\"\u003eHI 1001\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eFlow-thru Monitoring pH Electrode with BNC Connection and 3 m Cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003cth\u003eSolutions\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"http:\/\/hannainst.com\/usa\/prods2.cfm?id=017003\u0026amp;ProdCode=HI%207004L\"\u003eHI 7004L\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e4.01 pH Buffer Solution\u003cbr\u003e1 x 500 mL bottle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"http:\/\/hannainst.com\/usa\/prods2.cfm?id=017003\u0026amp;ProdCode=HI%207007L\"\u003eHI 7007L\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e7.01 pH Buffer Solution\u003cbr\u003e1 x 500 mL bottle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"http:\/\/hannainst.com\/usa\/prods2.cfm?id=017003\u0026amp;ProdCode=HI%207039L\"\u003eHI 7039L\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e5000 µS\/cm EC Solution. 500 mL Bottle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"http:\/\/hannainst.com\/usa\/prods2.cfm?id=017003\u0026amp;ProdCode=HI%2070300L\"\u003eHI 70300L\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eElectrode Storage Solution\u003cbr\u003e1 x 500 mL bottle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"http:\/\/hannainst.com\/usa\/prods2.cfm?id=017003\u0026amp;ProdCode=HI%207061L\"\u003eHI 7061L\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eGeneral Purpose Cleaning Solution\u003cbr\u003e1 x 500 mL bottle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003cth\u003eAccessories\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"http:\/\/hannainst.com\/usa\/prods2.cfm?id=017003\u0026amp;ProdCode=HI%20710005\"\u003eHI 710005\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003ePower Adapter. 115 Vac to 12 VDC. US Plug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"http:\/\/hannainst.com\/usa\/prods2.cfm?id=017003\u0026amp;ProdCode=HI%20710006\"\u003eHI 710006\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003ePower Adapter. 230 Vac to 12 VDC. European Plug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"http:\/\/hannainst.com\/usa\/prods2.cfm?id=017003\u0026amp;ProdCode=HI%2060542\"\u003eHI 60542\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eElectrode Holder for In-line Direct Pipe Installation. PG 13.5 Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"http:\/\/hannainst.com\/usa\/prods2.cfm?id=017003\u0026amp;ProdCode=HI%2098143-22\"\u003eHI 98143-22\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH and EC Transmitter with Galvanic Isolated Output\u003cbr\u003e\u003csmall\u003edesigned to be used with the HI 8000 series\u003c\/small\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003cth\u003eProbes\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"http:\/\/hannainst.com\/usa\/prods2.cfm?id=017003\u0026amp;ProdCode=HI%203001\"\u003eHI 3001\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eFlow-thru Conductivity Probe with 3 m cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":4857328389,"sku":"HI 8051-0300D","price":3225.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/0956\/products\/hi8000-panel_200-1_2015.jpeg?v=1443495845","url":"https:\/\/acornsci.co.nz\/products\/hi-8051-0300d","provider":"Acorn Scientific","version":"1.0","type":"link"}