{"product_id":"global-water-water-quality-sensors","title":"Global Water Water Quality Sensors","description":"\u003cp\u003eSubmersible water quality sensors with 4–20 mA output, built to wire straight into a datalogger, telemetry unit or PLC rather than a handheld meter. These are the sensors for continuous unattended monitoring — a permanent station in a stream, a lift station, a pond or a canal.\u003c\/p\u003e\u003ch3\u003eWhat each sensor is for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDissolved oxygen (WQ401)\u003c\/strong\u003e — the parameter that moves fastest and matters most for aquatic life. Standard for stream health work, aquaculture ponds and aeration control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH (WQ201)\u003c\/strong\u003e — supplied on 25 ft of cable. The electrode is the wear part and is replaceable, so the sensor body outlives several electrodes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConductivity\u003c\/strong\u003e — a proxy for total dissolved solids and the quickest way to see saltwater intrusion, road-salt runoff or an illicit discharge.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOrdering notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eThese are \u003cstrong\u003e4–20 mA\u003c\/strong\u003e sensors. Confirm your logger or controller has a current input, or budget for a signal conditioner.\u003c\/li\u003e\n\u003cli\u003epH electrodes have a finite service life regardless of use — a spare on the shelf keeps a station from going dark mid-season.\u003c\/li\u003e\n\u003cli\u003eCable is factory-terminated at the stated length. Splicing a submersible sensor cable in the field is a common cause of drift and failure.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eSurface water and stream monitoring, wastewater and lift stations, stormwater outfalls, aquaculture and hatcheries, irrigation canals, and any telemetered water quality station.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003eContact us\u003c\/a\u003e with your logger model and we will confirm wiring and scaling.\u003c\/p\u003e","brand":"Global Water","offers":[{"title":"Dissolved Oxygen — WQ401","offer_id":48768207061182,"sku":"12050978","price":276.0,"currency_code":"USD","in_stock":true},{"title":"pH — 25 ft cable","offer_id":48768207093950,"sku":"12050403","price":1237.0,"currency_code":"USD","in_stock":true},{"title":"Conductivity","offer_id":48768207126718,"sku":"72050059","price":1433.0,"currency_code":"USD","in_stock":true},{"title":"Replacement — pH Electrode (WQ201)","offer_id":48768207159486,"sku":"72050427","price":273.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/envirotechonline.com\/products\/global-water-water-quality-sensors","provider":"EnviroTech Services","version":"1.0","type":"link"}