{"product_id":"gf-ph-probe-for-nds-ndk-2-skus","title":"GF pH Probe (For NDS, NDK)","description":"\u003ch2\u003eIn-Line DryLoc pH Sensor for the Growlink Nutrient Doser\u003c\/h2\u003e\n\u003cp style=\"text-align: justify;\"\u003eThe 2751-2 is the in-line variant of the Signet 2751 family. It auto-recognizes whether the connected electrode is a pH or ORP probe and self-configures the signal chain on power-up. A \u003cstrong\u003efield-free calibration\u003c\/strong\u003e routine lets you set zero and slope without a buffer when one isn't on hand. \u003cstrong\u003eOut-of-range glass impedance and broken-glass detection\u003c\/strong\u003e raise an alert the moment a probe drifts past its serviceable life. That matters when a worn pH electrode is masking off-recipe feeds.\u003c\/p\u003e\n\u003ch2\u003epH\/ORP Smart Sensor Electronics with EasyCal and DryLoc Connection\u003c\/h2\u003e\n\u003cp style=\"text-align: justify;\"\u003eThe \u003cstrong\u003e4-20 mA two-wire loop output\u003c\/strong\u003e runs back to a Growlink Nutrient Doser, Connect Controller, or any standard PLC. Built-in preamplification keeps signal integrity intact for cable runs \u003cstrong\u003eup to 1,000 feet\u003c\/strong\u003e. EasyCal handles routine recalibration with a single button press and an LED indicator. Drop the probe in pH 7 buffer, press, watch the LED. The DryLoc connector pulls apart for storage or hot-swap without exposing the contacts to feed water. The integral NEMA 4X junction enclosure keeps the wiring side sealed against wash-down and humid air.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul style=\"text-align: justify;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eDryLoc connector for in-line installation:\u003c\/strong\u003e Dry-contact electrode coupling — pull apart for service without dousing the wiring side.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH 0-14 \/ ORP ±2,000 mV operating range:\u003c\/strong\u003e Auto-recognizes the electrode and self-configures, so one head covers both measurements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroken-glass and out-of-range impedance detection:\u003c\/strong\u003e Alarms when a pH bulb is cracked or the membrane has aged past usable life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasyCal one-button calibration:\u003c\/strong\u003e Field-free recalibration with an LED visual indicator — no buffer juggling, no menu trees.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-20 mA two-wire loop + S3L digital option:\u003c\/strong\u003e Loop output for any PLC; digital S3L available in the family for longer runs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in preamplification, 1,000 ft cable run:\u003c\/strong\u003e Keeps signal integrity over distribution-room distances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNEMA 4X integral junction enclosure:\u003c\/strong\u003e Sealed against grow-room humidity and wash-down on the wiring side.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"text-align: justify;\"\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #333; color: #fff;\"\u003e\n\u003cth style=\"padding: 8px; text-align: left;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"padding: 8px; text-align: left;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #fff;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eGF Signet 3-2751-2 (In-line, 4-20 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eMeasurement\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003epH and ORP (auto-recognized via electrode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fff;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003epH range\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e0 to 14 pH (family rated -1 to 15)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eORP range\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e±2,000 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fff;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003epH response time\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e\u0026lt;6 sec for 95% of change\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eOutput\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e4-20 mA, two-wire loop with EasyCal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fff;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eAlternate outputs (family)\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eS3L digital available on -1 and -4 variants\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eElectrode connector\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eDryLoc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fff;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eOperating temperature\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e32°F to 185°F (storage -4°F to 185°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eCable\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e4.6 m (15 ft), 3-conductor shielded, 22 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fff;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eCable run with preamp\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eUp to 305 m (1,000 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003ePower supply\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003e12-24 VDC ±10% (4-20 mA); 5-6.5 VDC ±5% (S3L)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fff;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eEnclosure\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eNEMA 4X (integral, in-line version)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eBody material\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003ePBT polyester\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fff;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eDiagnostics\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eBroken-glass alert, out-of-range glass impedance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eCalibration\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eEasyCal one-button with LED indicator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fff;\"\u003e\n\u003ctd style=\"padding: 8px;\"\u003eCompatibility\u003c\/td\u003e\n\u003ctd style=\"padding: 8px;\"\u003eGrowlink Nutrient Doser System (NDS), Nutrient Doser Kit (NDK); GF 8900\/9900\/9950 instruments; generic 4-20 mA PLC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Growlink","offers":[{"title":"Default Title","offer_id":48240873767126,"sku":"3-2751-2","price":1159.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0723\/9450\/6454\/files\/GF_pH_Probe_For_NDS_NDK_main_image.webp?v=1778801059","url":"https:\/\/growershouse.com\/products\/gf-ph-probe-for-nds-ndk-2-skus","provider":"GrowersHouse","version":"1.0","type":"link"}