{"product_id":"yokogawa-contacting-conductivity-sensors-sc42-sc4aj","title":"Yokogawa Contacting Conductivity Sensors SC42\/SC4A(J)","description":"\u003cp\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003ePlease Contact Us for the Best Quote and to Confirm Delivery Time\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIt can be used as a fairly\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003einexpensive\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003elow maintenance\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eindicator of water quality.  Good quality water with little contaminants will have a low conductivity.  There is far less maintenance than pH and minimal calibration. Conductivity is used in Boiler feedwater, RO, and Demineralizer applications.\u003c\/p\u003e\n\u003cp\u003eSince conductivity, up to a point, increases with an increase in the concentration of the ions in the process, we can use it to correlate to a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e% concentration\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003evalue of solutions such as acids or bases.  Again, since conductivity is non-specific, % concentration can only be measured on ONE chemical at a time and not a mixture of contributing chemicals.\u003c\/p\u003e\n\u003cp\u003eThere are two basic sensor styles used for measuring Conductivity: \u003cstrong\u003eContacting\u003c\/strong\u003e and \u003cstrong\u003eInductive\u003c\/strong\u003e (Toroidal, Electrodeless).\u003c\/p\u003e\n\u003cp\u003eWhen Contacting Sensors are used, the conductivity is measured by applying an alternating electrical current to the sensor electrodes (that together make up the cell constant) immersed in a solution and measuring the resulting voltage. The solution acts as the electrical conductor between the sensor electrodes.\u003c\/p\u003e\n\u003cp\u003eThe accuracy of conductivity measurements can be influenced by the following factors:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolarization\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContamination\u003c\/strong\u003e\u003cspan\u003e: Deposits or coating on the electrode surface of a 2-pole cell have a similar effect to polarization errors, i.e. the conductivity reading is lower than usual. These effects can also be prevented with a 4-pole conductivity cell.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable resistance\u003c\/strong\u003e\u003cspan\u003e: The cable resistance can induce error in the measurement and must be taken into account.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature\u003c\/strong\u003e\u003cspan\u003e: Conductivity measurements are temperature dependent, if the temperature increases, conductivity increases.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Instrument Trading Center","offers":[{"title":"Default Title","offer_id":48284621144286,"sku":null,"price":3000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/0636\/3870\/files\/1_8dd02288-4b79-47dd-93de-aff3b6bb2e78.jpg?v=1779783033","url":"https:\/\/www.ltprocess.com\/products\/yokogawa-contacting-conductivity-sensors-sc42-sc4aj","provider":"Instrument Trading Center","version":"1.0","type":"link"}