MONITORING CONCENTRATION OF THE SOLUTION BY REFRACTOMETER MEASUREMENT

Thursday May 5th, 2022
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1/ 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 reflex a total internal reflection, while the rest of the light is refracted during processing stage.

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 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.
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. The diagnostics program ensures that the measurement is reliable.

2/ Application concentration of the solution by Refractometer measurement of Vaisala products in the pharmaceutical industry:
Concentration of the solution by Refraction measurement of Vaisala refractometer is used for all industrial sectors application what the processes need to be monitored, controlled in fields, such as Food & beverage, Chemicals and allied, Oil & gas refining & petrochemicals, Pharmaceutical & biotechnology, Semiconductor, Pulp & paper, Sugar..
Espeically, the model pharma refractometer PR-43-P has basic index such as, measuring range: nD = 1.3200…1.5300 or 0-100% Brix.., the accuracy: nD ±0.0002 or ±0.1 Brix..
3/ Where to buy the Refractometer with high quality and reputation?
Filterfine Vietnam Co., Ltd is honorific to be an authorized distributor of Vaisa Refractometer in Vietnam.
Vaisala is a well-known and prestigious brand from Finland, giving quality from Europe. Refractometer product from Vaisala has various selection and supplied with maintenance support, warranty, auxiliary solution, parts replacement, consumable replacement.

Contact for details:
FILTERFINE TECHNOLOGY VIETNAM CO., LTD
Head office: No. 27, Lane 364/94, Giai Phong Street, Thinh Liet Ward, Hoang Mai District, Hanoi City, Vietnam
W: www.filterfinevn.com
Ha Noi office :
6th Floor, Kinh Do Tower, 292 Tay Son Street, Trung Liet Ward, Dong Da District, Hanoi City, Vietnam.
Tel/Fax: +84 24 3577 3045/3222 2380
Contact: Ms Phuong – +84 986592820
Email: phuongnguyen@filterfinevn.com