{"product_id":"hm-digital-dm-3-dual-inline-ec-tds-meter","title":"HM Digital DM-3 Commercial Dual Inline EC\/TDS Monitor","description":"\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eMonitor water quality at two points in your filtration system with the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eHM Digital DM-3 Commercial Dual Inline EC\/TDS Monitor\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe DM-3 uses two inline sensors to measure both \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eelectrical conductivity (EC)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003etotal dissolved solids (TDS)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. It is ideal for comparing untreated and treated water, monitoring RO performance, or checking the water quality between two deionisation stages and at the final outlet.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eIts large backlit display, high low-range resolution and individually calibrated sensor lines make the DM-3 particularly well suited to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ereverse osmosis, deionisation and spot-free rinse systems\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eMonitor Two Water Lines\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe two sensors can be installed at different points within a water-treatment system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCommon installations include:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eFeed water and RO product water\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFeed water and final DI water\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBetween two DI cartridges and after the final DI cartridge\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBefore and after a demineralisation system\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIncoming water and final treated-water outlet\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor a two-stage DI system, Line 1 can be positioned between the two DI cartridges and Line 2 after the final cartridge. This allows the first cartridge to be monitored for breakthrough while the second cartridge continues to polish the final water.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eMeasures both \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eEC and TDS\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDual inline sensors for monitoring two water lines\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLarge, easy-to-read backlit LCD display\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eHigh resolution down to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e0.1 ppm\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e below 100 ppm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eStated accuracy of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e±2%\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIndependent digital calibration for Line 1 and Line 2\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFactory calibrated to a 342 ppm NaCl solution\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDiagnostic error messages\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLong 1.2 metre shielded sensor cables\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eStronger water-resistant commercial housing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAdjustable mounting bracket\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBattery powered—no mains power connection required\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTwo AA batteries included\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eIdeal Applications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe HM Digital DM-3 is suitable for:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eReverse osmosis systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDeionised and demineralised water systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMixed-bed DI cartridge monitoring\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSpot-free vehicle and aircraft rinse systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWindow-cleaning water systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCommercial and industrial water treatment\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAquariums\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHydroponics\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDrinking-water filtration systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLaboratory and process-water monitoring\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eWhy Monitor TDS?\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eTDS is an indication of the total concentration of dissolved ions in the water. Monitoring TDS helps show whether an RO membrane or deionising resin is continuing to remove dissolved minerals effectively.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eA rising outlet reading can indicate that:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eAn RO membrane is losing rejection performance\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA DI cartridge is approaching exhaustion\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTreated-water quality is beginning to deteriorate\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA cartridge or resin stage may require servicing\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe DM-3 provides an immediate digital reading without needing to collect and test a separate water sample.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eWhy Choose the DM-3?\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCompared with a basic inline TDS meter, the DM-3 offers:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eBoth \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eEC and TDS measurement\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHigher resolution for low-TDS DI water\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA larger backlit display\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLonger shielded sensor cables\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSeparate digital calibration for each sensor\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA more robust water-resistant housing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDiagnostic messaging\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eA flexible mounting bracket\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThese features make it an excellent choice for commercial RO and DI systems where treated-water quality must be checked accurately and regularly.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eModel:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e HM Digital DM-3\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eMeasurement:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Dual-line EC and TDS\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eTDS range:\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e0–5,000 ppm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e0–5.00 ppt\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eEC range:\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e0–9,999 µS\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e0–9.99 mS\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eTDS resolution:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e0.1 ppm from 0–99.9 ppm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1 ppm from 100–999 ppm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e10 ppm from 1,000–5,000 ppm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e0.01 ppt from 0–5.00 ppt\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eEC resolution:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e0.1 µS from 0–99.9 µS\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1 µS from 100–999 µS\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e10 µS from 1,000–9,990 µS\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e0.01 mS from 0–9.99 mS\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eAccuracy:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e ±2% of reading\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eTDS conversion factor:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e NaCl, approximately 0.5\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eTemperature compensation:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Automatic, 0–60°C\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eSensors:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Two inline sensors designed for compatible 1\/4-inch quick-connect fittings\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eSensor cable length:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 1.2 metres each\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eCalibration:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Individually adjustable digital calibration for each line\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eFactory calibration:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 342 ppm NaCl\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003ePower supply:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Two AA batteries, included\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eMonitor dimensions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Approximately 116 × 70 × 19 mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eWeight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Approximately 225 g\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eHousing:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Water-resistant; not waterproof\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eInstallation\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe DM-3 is normally installed with:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eLine 1\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e connected to the feed water or an intermediate treatment point\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eLine 2\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e connected to the final treated-water outlet\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe sensor pins must be installed in the correct orientation across the direction of water flow.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor systems using larger pipework, the 1\/4-inch sensors can be installed in a suitable flowing sample line or compatible sensor fitting without reducing the entire main water line to 1\/4 inch.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eProfessional installation is recommended where the meter is being added to commercial or high-flow equipment.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eImportant Information\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe DM-3 monitor housing is water-resistant but \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003enot waterproof\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Install the display in a dry, protected location away from direct hose spray, weather exposure or possible submersion.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTDS and EC readings indicate the overall level of dissolved ions in the water. The DM-3 does not separately identify individual contaminants and does not directly measure hardness, pH, chlorine or microbiological water quality.\u003c\/span\u003e\u003c\/p\u003e","brand":"Water Filters Online Aotearoa","offers":[{"title":"Default Title","offer_id":48021344157833,"sku":"DM-3","price":159.85,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0584\/7633\/1145\/files\/HM_Digital_DM-3_800x800_b489c0b7-1c4c-4e02-9624-5e7e966cbce5.jpg?v=1787769646","url":"https:\/\/www.waterfiltersonline.co.nz\/products\/hm-digital-dm-3-dual-inline-ec-tds-meter","provider":"Water Filters Online Aotearoa","version":"1.0","type":"link"}