Showing posts with label Vaisala. Show all posts
Showing posts with label Vaisala. Show all posts

What is Refractometer Critical Angle Measurement?

What is Refractometer Critical Angle Measurement?

Vaisala refractometers use the critical angle measurement principle. A refractometer's three essential components are a light source, a prism, and an image detector. 


The light source sends rays to the prism and process interface at different angles. Rays with a steep angle partly reflect at the image detector and partially refract at the process. Low-angle rays reflect entirely on the detector. The angle from which the total reflection starts is called the critical angle. 

The CCD camera detects a bright and dark field corresponding to partly reflected and totally reflected light. The position of the borderline between the bright and the dark area correlates with the critical angle, which is a function of the refractive index and correlates with the solution's concentration.

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 concentration units. 

Vaisala K-PATENTS refractometer can indicate different scales, for example, Brix, liquid density, or concentration by weight. The diagnostics program ensures that the measurement is reliable.

Miller Energy, Inc.
800-631-5454

The Vaisala K-PATENTS PR-43A Sanitary Process Refractometers for Food, Beverage & Dairy Industries

Vaisala K-PATENTS® Sanitary Process Refractometers PR-43-AC for hygienic installations in small pipe line sizes of 2.5 inch and smaller; PR-43-AP for hygienic installations in large pipes, tanks, cookers, crystallizers and kettles and for higher temperatures up to 150°C (300 °F); and the PR-43-APT for flush mounting installations in cookers, cooling crystallizers and other vessels that have scrapers or mixers.

Sanitary Refractometer Applications:

Extraction, evaporation, brewing, distilling, sugar dissolving, blending, filling. Alcohol, rum, whiskey, brandy, vodka, molasses, liquors, cider, alcoholic beverages, pre-mixed liquors. Beer and malt beverages, wort, cut beer, root beer. Juices, blended vegetable and fruit juices and nectars, still drinks, vegetable and juice concentrates, iced tea and coffee, instant coffee and tea. Soft drinks, energy and sport drinks, beverage base. Wines, grape must.

Sanitary Refractometer 3A Approval:

The Sanitary refractometer PR-43-A is Sanitary 3-A approved to meet the highest hygiene requirements of food production. The 3-A Symbol assures that the Sanitary Refractometer

PR-43-A conforms to 3-A Sanitary Standard Number 46-04 for Refractometers and Energy-Absorbing Optical Sensors for Milk and Milk Products and it has passed the independent Third Party Verification inspection for 3-A Symbol authorization.

For more information about Vaisala K-PATENTS products in Metro New York, New Jersey, Pennsylvania, Delaware, and Northern Ohio contact Miller Energy, Inc. Call them at 800-631-5454 or visit their web site at https://millerenergy.com.