Integration of online sizing agent concentration refractometer measurement, display and control

Online sizing agent concentration refractometerMeasurement based on the principle of optical total reflection. When light enters a low refractive index medium from a high refractive index medium, refraction and reflection phenomena occur. When the incident angle exceeds a certain critical value, all light rays are reflected back to the original medium. The size of the critical angle depends on the difference in refractive index between the two media.

The sizing agent solution is formed by dissolving or dispersing polymer film-forming substances in water, and there is a definite functional relationship between its refractive index and concentration.

The instrument sensor part mainly consists of LED light source, sapphire prism, and CCD detector. LED emits light, which is transmitted through optical fibers to one side of the sapphire prism. When the prism comes into contact with the solution of the sizing agent to be tested, the light undergoes refraction or total reflection at the contact surface, and some of the light is reflected back to the other side of the prism.

The position of total reflection light moves with the change of critical angle, which is determined by the refractive index of the liquid. Linear array CCD accurately detects the position of reflected light, with each position corresponding to a refractive index value. The measured refractive index signal and temperature signal are transmitted to the display transmitter through cables, and the CPU calculates and outputs real-time concentration values based on the preset concentration refractive index relationship curve.

Temperature is the main interfering factor in the measurement of sizing agent concentration. The refractive index of liquid changes with temperature, and if not corrected, it will cause measurement deviation.Online sizing agent concentration refractometerThe built-in temperature sensor monitors the process temperature in real-time and corrects the concentration output value based on a preset temperature compensation algorithm to ensure the accuracy of measurement results under different operating conditions.

Instrument advantages

Second level measurement, no need for pre-processing: no need for sample pre-processing, no need for reagents or consumables.

Long life light source, reducing costs: With a lifespan of up to 100000 hours, the ultra long life light source significantly reduces usage and maintenance costs.

No mechanical action, stable and reliable: The instrument has no mechanical action during the detection process, ensuring long-term stable use.

Flexible data output: supports upper computer communication, 4-20mA&RS485 signal output, supports alarm and control switch signal output.

Factory calibration, ready to use upon installation: Calibration has been completed before leaving the factory and comes with automatic temperature compensation function, eliminating the need for complicated settings and allowing for direct use, saving time and effort.

Customized data model, tailor-made: supports data modeling functions, provides customized data model services for different process conditions and sample characteristics, ensuring that instruments can adapt to various application scenarios and achieve measurement results.

Automatic cleaning+full flat structure, worry free cleaning: Optional components can be used to achieve fully automatic cleaning of the optical window, effectively avoiding contamination and deviation of measurement results. In addition, the detection prism adopts a fully planar structure design to store dirt and ensure long-term stable operation.

technical parameters