A low-cost mercury-visible liquid concentration sensor. In actual engineering and industrial production, it is often necessary to monitor the concentration and viscosity of some high water-based fluid media such as slurries online to ensure the best process operating environment and Product quality, thereby improving production efficiency. By online measuring the liquid concentration and viscosity during the production process, data on the rheological behavior of the liquid can be obtained, which has important guiding value for predicting the process control of the product process, transportability and the operability of the product during use. The characteristics of a liquid are often related to changes in other characteristics of the product such as color, density, stability, solid content and molecular weight. The most convenient and sensitive method to detect these characteristics is to detect the concentration and viscosity of the liquid online. During the production process, online concentration and viscosity testing are carried out according to the range of process requirements, which can minimize the scrap rate of products and the downtime of the production line. As a high water-based fluid medium, its unique characteristic is that the viscosity is relatively low, generally between 0---50 cp. The current online testing instruments are mainly rotational viscometers, luminous flux concentration meters, ultrasonic concentration meters and microwave concentration testing instruments. Isoluminous flux concentration meters and fiber optic concentration sensors use the relationship between the refractive index and concentration of the solution to measure the concentration. Due to changes in the temperature of the slurry and the deposition of the slurry on the measuring prism and other debris left over from the industrial production process of the slurry - such as The fibers often left in the textile slurry have a greater impact on the refractive index. To avoid measurement errors, the prism needs to be rinsed with steam at certain intervals. Both ultrasonic concentration meters and microwave concentration testing instruments have problems such as high cost and complex structure. Moreover, the ultrasonic measurement method requires strong digital signal processing capabilities and hardware support, and the installation method of the sensor is also relatively complicated. Application is limited. At present, the more mature concentration detection in the international textile industry uses optical refractometers to measure slurry concentration, which is only used on imported equipment. The application of domestic equipment and other testing methods has not been reported. The rotational viscosity online measurement method is due to the torque measuring rotor. The structure is complex, the cost is high, the viscosity signal taken is unstable, and the measurement and control stability is poor. More importantly, the mechanical structure of the torque measuring rotor makes it difficult to adjust and maintain the zero point online at any time, especially for slightly viscous slurries such as sizing slurries. The change perception is insensitive, and there is no correlation between the tested viscosity and concentration, so it is not suitable for online production testing. In the domestic textile industry, the viscosity of the slurry is mainly measured manually on site, or a dedicated person is responsible for frequently measuring the concentration of the slurry using an opacifier and making corresponding adjustments. Or use the manual-funnel method. The workers regularly use the funnel method to measure the time required for the slurry to flow out, and use time to characterize the slurry viscosity. The time is measured with a stopwatch, and the outflow and end time of the slurry are visually observed. Among these methods, the accuracy of naked eye observation is not high, and people have a greater impact on the measurement results. The sizing quality cannot be effectively guaranteed and the production efficiency is low. On-line monitoring of slurry concentration and viscosity devices has not been reported and used. This product uses the patented technology of Xianbo Technology to provide an online monitoring sensor for slurry concentration and viscosity based on sensitive devices. This sensor can simultaneously measure the concentration and viscosity changes of slurry, and is mainly sensitive to slightly viscous liquids. The test range is 0-10cp. And it can be used alone as a sensor to measure slurry concentration or viscosity according to actual working conditions. The sensor proposed by the invention is small in size, low in price, high in resolution, easy to use, and can perform temperature compensation according to the actual application environment. And setting early warning signals, it is mainly used in the measurement of high water-based fluid media, and can also be used in the measurement of liquids with various components such as solutions, biological fluids and various chemical synthetic liquids. It is not only used in the textile field, but also has a wide range of applications in papermaking, cane sugar, petroleum, coal and agriculture.
fws-3 online detection liquid viscosity sensor technical parameter measurement method: Online real-time measurement.: Low-cost low-viscosity measurement parameters: slurry viscosity, and concentration viscosity range: 0 - 10000cp (can be calibrated to other viscosity units) Measurement resolution: 0.5cp Output signal: DC voltage (0---5v), response time: less than 2 seconds Operating temperature: -10℃ -120℃ Input voltage; DC 12v, 1.a For more information, please log in to the Jieke website