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The automatic digital polarimeter has high-precision optical rotation angle measurement capability
Date: 2025-09-14Read: 1
Automatic digital polarimeter is a precision instrument used to determine the optical rotation of substances. Optical rotation refers to the rotational effect of a substance on light, typically determined by measuring changes in its optical rotation angle to determine its concentration, purity, and molecular structure.
Automatic digital polarimeterWorking principle:
1. Polarized light source: A linear polarized light source is commonly used in instruments, and the natural light emitted by the light source is converted into polarized light by a polarizer. Polarized light can effectively eliminate the influence caused by light source and instrument surface reflection, ensuring the accuracy of test results.
2. Sample tube: Polarized light enters the sample tube and passes through the sample to be tested. The design of a sample tube is usually a transparent pipe that contains a solution of the substance to be tested. Substances undergo rotation when passing through polarized light.
3. Optical rotation: Matter can affect the propagation path of light, causing the vibration direction of polarized light to rotate. The rotation angle is related to the concentration, molecular structure, and optical path length of the substance.
4. Detector and photometer: After rotating polarized light passes through the sample, it is received by a detector set at the other end of the instrument. The detector will convert the polarization direction change of light into an electronic signal, which will be transmitted to the photometer system.
5. Digital display: After digitization, the instrument will display the value of the optical rotation angle, and use this value to calculate the concentration or purity of the sample through a formula.
Design features of automatic digital polarimeter:
1. High precision measurement: With high-precision optical rotation angle measurement capability, it can be accurate to several decimal places, suitable for high demand scientific research and industrial testing.
2. Automated operation: Traditional polarimeters require manual adjustment and recording of data, while digital polarimeters, through intelligent design, can automatically adjust samples, measure angles, and display results, greatly improving work efficiency and operational convenience.
3. Multiple measurement ranges: capable of measuring substances of different concentrations and optical rotation constants, with a wide range of applications. It can adapt to the optical rotation angle range of different samples, ensuring a wider range of detection needs.
4. Strong stability: The instrument adopts a highly stable optical system and a precise temperature control system, which can effectively avoid the influence of external environmental changes on the measurement results.
5. Digital display and data storage: The digital display screen can display the rotation angle in real time and has data storage function, which facilitates the recording and analysis of results.
6. Temperature control system: Temperature has a certain impact on the rotation angle, and a temperature control system is usually equipped to ensure temperature stability during the testing process and avoid errors caused by temperature fluctuations.