{"id":23843,"date":"2020-06-22T09:42:45","date_gmt":"2020-06-22T09:42:45","guid":{"rendered":"https:\/\/contrologic.co.th\/web\/news\/refractometer\/"},"modified":"2024-03-20T09:33:43","modified_gmt":"2024-03-20T02:33:43","slug":"refractometer","status":"publish","type":"post","link":"https:\/\/contrologic.co.th\/web\/news-en\/refractometer\/","title":{"rendered":"Refractometer: Digital Measurement Principle"},"content":{"rendered":"\r\n

Refractometer: Digital Measurement Principle<\/strong><\/h3>\r\n

\"\"<\/h3>\r\n

Refractometer: Digital Measurement Principle : The light source sends light to the interface between a prism and the process solution, where the rays meet the surface at different angles. Depending on the angle, some rays undergo a total internal reflection. The rest of the light is refracted into the process solution.<\/span><\/p>\r\n

This angle is a function of the refractive index and therefore the concentration of the solution. A CCD-camera detects the optical image. The image is transformed point-by-point into a digital signal. Digital signal processing is used to locate the exact shadow line position and to determine the refractive index nD.<\/span><\/p>\r\n

A built-in temperature sensor measures the temperature T on the interface of the process liquid. The sensor converts the refractive index nD and temperature T into Brix units.<\/span><\/p>\r\n

The diagnostics program ensures that the measurement is reliable.<\/span><\/p>\r\n

Thus, an optical image with a dark sector and a light sector is created. The angle corresponding to the shadow line is called the critical angle of total internal reflection.<\/span><\/p>\r\n

The light source emits light at the inter\u00adface, between a prism and the process solution, where the rays meet the surface at different angles. Depending on the angle, some rays undergo a total internal reflection. The rest of the light is refracted into the process solution. Thus an optical image with a dark sector and a light sector is created. The angle corresponding to the shadow line is called the critical angle of total internal reflection. This angle is a func\u00adtion of the refractive index and therefore the concentration of the solution. A CCD-camera detects the optical image. The image is transformed point-by-point into a digital signal. Digital signal processing is used to locate the exact shadow line position and to deter\u00admine the refactive index nD.<\/span><\/p>\r\n","protected":false},"excerpt":{"rendered":"

Refractometer: Digital Measurement Principle Refractometer: Digital Measurement Principle : The light source sends light to the interface between a prism and the process solution, where the rays meet the surface at different angles. Depending on the angle, some rays undergo a total internal reflection. The rest of the light is refracted into the process solution.<\/p>\n","protected":false},"author":1,"featured_media":6068,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[440],"tags":[],"acf":[],"yoast_head":"\nRefractometer: Digital Measurement Principle - Contrologic<\/title>\n<meta name=\"description\" content=\"Refractometer - the light source sends light to the interface between a prism, where the rays meet the surface at different angles.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/contrologic.co.th\/web\/news-en\/refractometer\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Refractometer: Digital Measurement Principle\" \/>\n<meta property=\"og:description\" content=\"Refractometer - 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