MS-PS90 Split NMP Concentration Detector

NMPThe Chinese name of the chemical is N-methylpyrrolidone, a colorless and transparent liquid with a slight ammonia odor. It has a boiling point of 203 ℃ and a flash point of 95 ℃, and is easily soluble in water, ether, acetone, and various organic solvents. It can dissolve most organic and inorganic compounds, polar gases, natural and synthetic polymers. It has the advantages of low viscosity, good chemical and thermal stability, high polarity, and low volatility. NMP is widely used in industries such as lithium batteries, electronics, pharmaceuticals, and petrochemicals. In the production process of lithium batteries, NMP itself does not enter the final lithium battery products, but utilizes its good chemical properties to be used as a solvent for dispersing binders. At a certain temperature, the waste gas containing NMP is evaporated through a drying process, and NMP waste liquid is generated through a recovery device.

MSDR-PS90 type split online detectionNMP concentration,It can detect the concentration of NMP solution in the NMP waste liquid recovery tank in real time. Generally, the recovery concentration of NMP liquid is between 75% and 85%. When the set concentration value is reached, the PLC controller automatically triggers the control of the discharge pneumatic ball valve to discharge the waste liquid into the storage tank for the next process of distillation to form high-purity NMP solution, which can be directly reused in production.

When light is projected from one medium to another, the direction of light propagation changes, and this phenomenon is called refraction of light. Under certain conditions, the concentration of each medium is related to the refractive index of light. In practical applications, we can determine the concentration of the medium by measuring the critical angle at which light refracts.Through fully automated continuous measurementControl can reduce labor intensity and minimize manual labor; Improve wastewater discharge concentration and reduce recycling costs.

MSDR-PS90 Split type Online NMP Concentration Detector，The refractive index of NMP solution is measured using the principle of refraction, and there is a strong correlation between the refractive index and the concentration of NMP solution. Obtain the actual concentration of the solution through conversion. This measurement principle has good stability and high accuracy, and is suitable for the installation of container walls or pipelines, as well as other installation methods; The instrument has a compact structure and is easy to operate; Can monitor NMP concentration online in real-time 24 hours a day; Equipped with factory linear calibration and automatic temperature compensation functions, it can objectively and accurately measure the concentration of NMP solution in different measurement environments, with a measurement accuracy of up to 0.1%.

Main technical parameters

Factory calibration and automatic temperature compensation, directly put into use, no need for on-site calibration

Concentration range 0.0~100.0%

Resolution concentration 0.1% temperature 0.1 ℃

Measure temperature from 0 to 60 ℃ (temperature compensation)

Measurement accuracy ± 0.1% Environmental temperature 0.0~60.0 ℃

Temperature ± 0.5 ℃, pressure resistance 1.0MPa

The default measurement time is 5 seconds, and the protection level is measured once. The measurement part is IP67

Installation methods include threading, flanges, chucks, etc. Support customization.

Output analog output: 24V 4~20mA corresponding to concentration 0.0~100.0%

Digital output: RS485

Other output methods can be customized.

Input DC+24V ± 10% current<100mA

Optional: Automatic cleaning device, using compressed air or high-pressure water and ultrasonic waves to automatically clean the prism surface, suitable for dirty liquids, to prevent dirt from adhering and ensure measurement accuracy.