Plastic moisture meter SFY-20A technical characteristics

Moisture content is an important factor affecting the processing technology, product appearance, and product characteristics of resins such as polyamide (PA) and polycarbonate (PC). In the injection molding process, if you use plastic particles with too much moisture content to produce, there will be some processing problems, and ultimately affect the quality of the finished product, such as: surface cracking, reflective, and reduced mechanical properties such as impact resistance and tensile strength . Therefore, the control of moisture content is crucial for the production of high quality plastic products.
At present, the reference method for the determination of moisture content in the plastics industry is the Karl Fischer titration, which is a universal titration method for determining the moisture content of a sample. In order to obtain accurate and reliable measurement results, this method requires a well-equipped laboratory and a well-trained operator, which means greater cost. The appearance of the SFY-20A Halogen Moisture Analyzer has solved this problem. The SFY-20A eliminates the need for expensive precision instruments or additional chemicals, while the 0.001%/0.01% MC high-resolution, high-heat-efficiency ring halogen lamp and uniquely designed gold-plated radiator ensure fast, accurate Determination of moisture content. SFY-20A halogen fast moisture analyzer is a new type of quick moisture testing instrument that can be used to measure the moisture content of any substance (other than substances that generate dangerous chemical reactions through heating). The instrument is designed with a thermogravimetric principle and the instrument measures Sample weight At the same time, the halogen heating unit and the moisture evaporation channel quickly dry the sample. During the drying process, the instrument continuously measures and instantly displays the % moisture content lost during the drying process. After the drying is completed, the final moisture content determined is locked. Press the display key to observe the moisture value, the initial weight value, the initial value, and the test. Time and other data. Compared with the traditional oven heating method, halogen heating can reach the maximum heating power in the shortest time, and the sample is quickly dried at high temperature, which greatly accelerates the measurement time. The rubber, plastic and nylon samples can be completed in only a few minutes. The test results are in good agreement with the national standard oven method and have alternative technical specifications:
Weighing range: (general) 0-90g (specific requirements) 0-100g
Weighing minimum reading: 0.001g
Sample quality: 0.3-90g
Heating temperature range: Room temperature -205°C
Moisture content readability: 0.01%
Display parameters: 7 kinds
Communication Interface: RS 232
Dimensions: 380×205×325(mm)
Power: 270W (work); 20W (standby)
Power supply: 220V±10%
Frequency: 50Hz±1Hz
Net weight: 3.7Kg
SFY-20A Halogen Moisture Analyzer is a kind of high-efficiency and quick moisture analyzer which is specialized in the production of R&D moisture analyzer—Shenzhen Guanya Electronic Technology Co., Ltd. provides moisture content determination for the plastic industry. The instrument performs moisture content measurement according to the principle of thermal weight loss analysis. That is, during the heat drying process, the moisture content of the sample is determined by measuring the mass change before and after the sample is dried.
The SFY-20A Halogen Moisture Analyzer consists of a weighing cell with an analytical balance sensor and a heating unit with an annular halogen lamp. Among them, the weighing cell of the analytical balance ensures the high accuracy and high reproducibility of the determination of the moisture content of the plastic particles, while the heating unit of the annular halogen lamp can realize the rapid temperature rise and the homogeneity of the heating during the measurement of the sample. Compared with other TGA methods such as oven, infrared, or microwave, the SFY-20A Moisture Analyzer not only satisfies the high precision and high reproducibility of the determination of moisture content of plastic particles, but also realizes Quick and easy operation.
In the following, the application of the determination of moisture content of polyamide 6 (PA6) plastic particles is taken as an example to further illustrate the excellent performance of the SFY-20A halogen moisture analyzer.
In the production of PA6 resin, it is generally recommended that the moisture content of the raw material before injection molding should be less than 0.2%. However, the resin absorbs nearly 2.5% of moisture in an environment with a temperature of 23°C and a relative humidity of 50%. Therefore, the resin material must be dried to meet the injection molding requirements. Another benefit of measuring the moisture content of plastic particles prior to the drying process is that the drying time can be optimized (eg shorten the drying time from the original 4h to 1h) and significantly reduce energy costs.
In addition, quality systems such as ISO 9001 also require regular measurements of the moisture content of the plastic particles to verify the normal performance of the dryer. Of course, the moisture content of each batch of resin raw material needs to be determined before the injection molding machine starts.
In this experiment, Shenzhen Guanya SFY-20A halogen moisture analyzer was used to determine the moisture content of PA6 plastic particles. The operation steps are as follows:
1. Open the door on the right side of the instrument and adjust the instrument parameters. The settings of each parameter are as follows: temperature 105°C, and the determination time is 12min.
2. Peel the pan and add about 20-30 g of plastic particle sample.
3. Press “↑” and press the test button to start the moisture measurement process.
4. Results show the moisture content of the plastic particles.
The test showed that the moisture content of the PA6 plastic particle sample was 0.11%, which was in accordance with the 0.2% maximum limit recommended in the injection molding process. Therefore, the raw material can directly enter the injection molding process without further drying.
In the experiment, in order to verify the accuracy of the moisture determination results of Shenzhen Guanya SFY-20A Halogen Moisture Analyzer, the moisture content of three PA6 with different moisture content was measured, and the results were compared with the Karl Fischer titration method ( The results of the use of a METTLER TOLEDO DL39 Karl Fischer Titrator in conjunction with a Stromboli furnace were compared. Through experiments, the results of the high reproducibility measurements of the three different moisture content samples measured by SFY-20A are very close to the results of the Karl Fischer titration. The above examples can be found. Shenzhen Guanya SFY-20A Halogen Moisture Analyzer Quick and accurate moisture determination can be achieved without the use of chemical reagents and professional laboratory operators, providing a quick, easy and reliable moisture measurement method for plastics industry customers.