{"product_id":"hi-9934-2","title":"HANNA HI 9934-2  Industrial Grade TDS Controller with Proportional Fertilizer Dosing for Hydroponics Appli","description":"\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cdiv id=\"Product-Body\"\u003e\n\u003cp\u003eHI 9934 is a  wall mounted meter that controls TDS in the 0 to 1999 ppm (mg\/L) range through a single set point for dosage of fertilizers. The proportional control can be fine tuned through the time cycle between 0 to 90 seconds and the proportional band from 0 to 400 ppm. Coarse and fine as well as a slope trimmer make for an accurate setting and calibration. A pump or electrovalve can be powered through the terminal. In addition to the set point relay. HI 9934 also provides for an alarm relay. The alarm is activated when the measurements exceed the set point by a user selectable margin in the 50 to 450 mg\/L (ppm) range. 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 normally-open position and turned off during maintenance.\u003c\/p\u003e\n\u003cp\u003eHI 9934 also provides an isolated output signal which is user selectable between \u003cbr\u003e0-20 or 4-20 mA.\u003c\/p\u003e\n\u003cp\u003eHANNA instruments four-ring TDS probes with incorporated temperature sensor and DIN connector can be quickly attached to the controller. Readings are automatically compensated for temperature variations in the 0 to 50°C (32 to 122°F) range.\u003c\/p\u003e\n\u003cp\u003eThe extractable terminal wiring is through the side of the meter with washers and grommets. The compartment containing the connections is enclosed behind a fire-retardant ABS panel.\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 9934 is supplied complete with instructions.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"http:\/\/www.hannainst.com\/images\/HI_9934Chart.jpg\" alt=\"\" data-mce-src=\"http:\/\/www.hannainst.com\/images\/HI_9934Chart.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 to 1999 ppm (mg\/L)\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\u003e1 ppm (mg\/L)\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 1999 ppm (mg\/L)\u003c\/small\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTDS Conversion\u003cbr\u003eFactor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e\u003csmall\u003e0.65 mg\/L (ppm) = 1 µS\/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\u003eTDS from 0 to 400 ppm 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\u003eterminals 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 TDS exceeds by more than the user- selectable interval (0 to 400 ppm) 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) are activated whenever TDS 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 (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=017008\u0026amp;ProdCode=HI%2070442L\" data-mce-href=\"http:\/\/www.hannainst.com\/usa\/prods2.cfm?id=017008\u0026amp;ProdCode=HI%2070442L\"\u003eHI 70442L\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e1500 mg\/L (ppm) TDS 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=017008\u0026amp;ProdCode=HI%203001D\" data-mce-href=\"http:\/\/www.hannainst.com\/usa\/prods2.cfm?id=017008\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":4857327685,"sku":"HI 9934-2","price":1098.2,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/0956\/products\/hi9934_200_2015.jpeg?v=1443495837","url":"https:\/\/acornsci.co.nz\/products\/hi-9934-2","provider":"Acorn Scientific","version":"1.0","type":"link"}