{"product_id":"hi-9931-2","title":"HANNA HI 9931-2  Industrial Grade EC Controller with Proportional Fertilizer Dosing for Hydroponics Applic","description":"\u003cdiv id=\"Product-Body\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eHI 9931 is a wall mounted meter that measures and controls conductivity in the 0 to 10 mS\/cm range. A single set point allows for proportional dosage of fertilizer solutions. The proportional settings can be fine tuned through two conveniently positioned dials on the front panel. The time cycle is adjustable from 0 to 90 seconds and the proportional band from 0 to 1.6 mS\/cm. Calibration and set points have a coarse and fine tuning trimmers. A pump or electrovalve can be wired directly to the controller and be powered through the terminals.\u003c\/p\u003e\n\u003cp\u003eHI 9931 also provides for an alarm relay which is activated when the measurements exceed the set point by a user selectable margin from 0.5 to 2.5 mS\/cm. The alarm also triggers if. due to a malfunction. the continuous dosing time exceeds the operator adjustable period of 1 to 10 minutes. The alarm can be configured in either normally closed or open position and turned off during maintenance. HI 9931 also provides an isolated output signal which is user selectable between 0-20 or 4-20 mA.\u003c\/p\u003e\n\u003cp\u003eHANNA four-ring conductivity probes ending in a DIN connector can be quickly attached to the HI 9931. Readings are automatically compensated for the effects of temperature in the 0 to 50°C (32 to 122°F) range. For quick and easy wiring. HI 9931 comes with extractable terminal modules. Several LED's show whether the set point or alarm relays have been activated.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder Information:\u003c\/strong\u003e\u003cbr\u003eHI 9931 is supplied complete with instructions.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"http:\/\/www.hannainst.com\/images\/HI_9931Chart.jpg\" alt=\"\" data-mce-src=\"http:\/\/www.hannainst.com\/images\/HI_9931Chart.jpg\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\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\u003cli class=\"TabbedPanelsTab\"\u003eDownloads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"TabbedPanelsContentGroup\"\u003e\u003cdiv class=\"TabbedPanelsContent TabbedPanelsContentVisible\"\u003e\n\u003ctable class=\"spec_table mceItemTable\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e0.00 to 10.00 mS\/cm\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e0.01 mS\/cm\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccuracy @ 20°C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e±2% f.s.\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCalibration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003ethrough \"ZERO CAL\" and \"SLOPE CAL\" trimmers\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSetpoint\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003efrom 0 to 10.00 mS\/cm\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature\u003cbr\u003eCompensation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003eautomatic. 0 to 50°C (32 to 122°F) with ß = 2%\/°C\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecorder Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003eselectable at 0-20 mA or 4-20 mA (isolated)\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProportional\u003cbr\u003eControl\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003econductivity from 0.0 to 1.6 mS\/cm and time cycle from 0 to 90 seconds\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlarm Contact\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003eterminal can be configured as normally open or normally closed (isolated output max. 2A. max. 240V. resistive load. 1.000.000 strokes). The alarm is activated if conductivity exceeds by more than the user selectable interval (0 to 2.0 mS\/cm) from the set point or due to overdosage\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDosing Terminals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003erelay (115 to 240V. max.2A. 1.000.000 strokes) is activated whenever conductivity falls below the set point\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProbe\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003efour-ring potentiometric with built-in temperature sensor and DIN connector (not included)\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e±10% 115 VAC or 230 VAC; 50\/60 Hz\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e-10 to 50°C (14 to 122°F); RH max 95% non-condensing\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCase Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003efiber-reinforced. self-extinguishing ABS\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e221 x 181 x 86 mm (8.7 x 7.1 x 3.4’’)\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e1.6 kg (3.5 lb.)\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ctable class=\"spec_table mceItemTable\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\u003cth\u003eSolutions\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"http:\/\/www.hannainst.com\/usa\/prods2.cfm?id=044009\u0026amp;ProdCode=HI%207031L\" data-mce-href=\"http:\/\/www.hannainst.com\/usa\/prods2.cfm?id=044009\u0026amp;ProdCode=HI%207031L\"\u003eHI 7031L\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e1413 µS\/cm EC Solution. 500 mL Bottle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"http:\/\/www.hannainst.com\/usa\/prods2.cfm?id=044009\u0026amp;ProdCode=HI%207039L\" data-mce-href=\"http:\/\/www.hannainst.com\/usa\/prods2.cfm?id=044009\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\u003cth\u003eProbes\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"http:\/\/www.hannainst.com\/usa\/prods2.cfm?id=044009\u0026amp;ProdCode=HI%203001D\" data-mce-href=\"http:\/\/www.hannainst.com\/usa\/prods2.cfm?id=044009\u0026amp;ProdCode=HI%203001D\"\u003eHI 3001D\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eFlow-thru Conductivity Probe with DIN Connection and 3 m cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cdiv\u003e\u003cstrong\u003eProduct Manuals\u003c\/strong\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cimg src=\"http:\/\/www.hannainst.com\/usa\/images\/icon-pdf.gif\" alt=\"\" width=\"20\" height=\"22\" align=\"absmiddle\" border=\"0\" data-mce-src=\"http:\/\/www.hannainst.com\/usa\/images\/icon-pdf.gif\"\u003e\u003cspan\u003e  Manual: \u003c\/span\u003e\u003ca title=\"Download Product Manual\" href=\"http:\/\/www.hannainst.com\/manuals\/manHI_9931_9934.pdf\" target=\"_blank\" data-mce-href=\"http:\/\/www.hannainst.com\/manuals\/manHI_9931_9934.pdf\"\u003eDownload\u003c\/a\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":4857327621,"sku":"HI 9931-2","price":1098.2,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/0956\/products\/hi9931_200_2015.jpeg?v=1443495836","url":"https:\/\/acornsci.co.nz\/products\/hi-9931-2","provider":"Acorn Scientific","version":"1.0","type":"link"}