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Yulaibo Technology (Beijing) Co., Ltd
Falling ball viscometer
NegotiableUpdate on 05/07
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Overview
The falling ball viscometer is a viscosity measurement instrument designed based on classical physical principles, widely used in various fields such as scientific research experiments, industrial production quality control, etc. Its core function is to accurately measure the dynamic viscosity of liquids and some semi fluids, providing reliable data support for various product development, process optimization, and quality testing. Its design follows mature measurement principles, with a simple and reasonable structure, easy to operate and understand, and can complete routine measurements without complex professional skills. It is suitable for viscosity detection needs in various scenarios.
Product Details
Product Introduction of Falling Ball Viscometer
The falling ball viscometer is a viscosity measurement instrument designed based on classical physical principles, widely used in various fields such as scientific research experiments, industrial production quality control, etc. Its core function is to accurately measure the dynamic viscosity of liquids and some semi fluids, providing reliable data support for various product development, process optimization, and quality testing. Its design follows mature measurement principles, with a simple and reasonable structure, easy to operate and understand, and can complete routine measurements without complex professional skills. It is suitable for viscosity detection needs in various scenarios.
The core structure of the instrument consists of multiple components that work together to ensure the stability of the measurement process and the accuracy of the data. The specific structural details are as follows:
1. Sample tube: Made of high transparency material, the tube wall is smooth without scratches, and the movement trajectory of the falling ball inside can be clearly observed. The tube body is marked with clear upper and lower circular scale lines to define the measurement distance of the falling ball and facilitate accurate recording of the falling time; The outer side of the sample tube is equipped with a water bath jacket, which can be used in conjunction with circulating water bath equipment to achieve precise control of sample temperature and reduce the impact of temperature fluctuations on measurement results.
2. Ball drop kit: equipped with multiple balls of different materials and sizes, each ball comes with an exclusive testing certificate that clearly indicates key information such as diameter and density. It can be flexibly selected according to the viscosity range of the tested sample to ensure stable measurement results in different viscosity ranges; At the same time, a dedicated cleaning brush is equipped to remove residual impurities on the surface of the falling ball and ensure its smoothness.
3. Support and adjustment mechanism: It includes a stable machine base and horizontal adjustment components. The bottom of the machine base is equipped with a horizontal nut, which can be adjusted to keep the horizontal bubble at the center of the instrument top, ensuring that the instrument is placed horizontally; Some models are equipped with angle adjustment nuts, which can adjust the tilt angle of the sample tube according to measurement needs, further expanding the measurement range and adapting to the detection requirements of low viscosity liquids.
4. Auxiliary components: Equipped with a thermometer fixing device, the thermometer can be installed to monitor the sample temperature in real time. The installation position of the thermometer has been optimized to accurately reflect the actual temperature of the sample; Simultaneously equipped with sealing plugs and sealing rings, used to seal the sample tube, prevent sample leakage, eliminate air bubbles inside the tube, and avoid interference from bubbles on the trajectory of the falling ball.
The workflow of the drop ball viscometer is simple and orderly, following standardized operating procedures, and does not require complex equipment debugging. The specific operating steps are divided into four stages, and the details are as follows:
In the first stage, instrument preparation: place the falling ball viscometer on a flat table without vibration or direct sunlight, calibrate the instrument level by adjusting the horizontal nut, and ensure that the horizontal bubble is in the center position; Check if the inner wall of the sample tube is clean. If there are residual impurities, rinse with a special solvent and air dry; According to the characteristics of the tested sample, select a suitable ball and clean the surface of the ball with a cleaning brush to ensure that there are no stains or scratches.
In the second stage, sample preparation: the tested liquid sample is left to stand for a period of time to remove air bubbles from the sample and avoid bubbles affecting the falling speed of the ball; Slowly pour the sample into the sample tube, ensuring that the pouring amount is sufficient for the ball to submerge and there is enough space for it to fall, in order to avoid measurement errors caused by insufficient sample volume; If temperature control is required, connect the sample tube to the circulating water bath device, set the target temperature, and wait for the sample temperature to stabilize before proceeding with subsequent operations.
The third stage, measurement operation: Use tweezers to gently place the selected falling ball into the top of the sample tube, ensuring that the falling ball is submerged in the sample and has no initial velocity, to avoid human interference with the movement trajectory of the falling ball; When the falling ball starts to fall uniformly, record the time it takes for it to pass through the upper and lower scale lines of the sample tube. To ensure data accuracy, the same sample needs to be measured 3-5 times, and the average of multiple measurements is taken as the final falling time; During the measurement process, maintain a stable laboratory environment temperature to avoid temperature fluctuations affecting sample viscosity.
The fourth stage, data processing and instrument cleaning: Based on the constant of the falling ball, the density difference between the sample and the falling ball, and the measured falling time, the dynamic viscosity of the sample is calculated using a dedicated formula; After the measurement is completed, promptly pour out the residual sample from the sample tube, rinse the sample tube and drop ball with a suitable solvent to remove residual stains, air dry and store the drop ball and sample tube properly, and turn off relevant auxiliary equipment.
The application scenarios of the falling ball viscometer are wide, covering multiple fields such as scientific research, industry, and medicine. With its convenient operation and stable measurement characteristics, it has become the preferred instrument for various viscosity detection scenarios. The specific application details are as follows:
1. Research field: Suitable for the study of fluid physical properties in universities and research institutes, it can be used to determine the viscosity of various new material solutions and solvents, providing basic data for research in fluid mechanics, materials science and other fields, and helping researchers explore the flow characteristics and structural relationships of substances.
2. Chemical industry: Used for quality control of various chemical products, such as coatings, adhesives, solvents, etc. By measuring the viscosity of the product, it ensures that the flowability and uniformity of the product meet production standards, avoiding the impact of abnormal viscosity on the product's performance and application.
3. In the field of medicine and food: In the pharmaceutical industry, it can be used to determine the viscosity of drugs, injection base liquids, etc., to ensure the quality and safety of drugs; In the food industry, it is suitable for measuring the viscosity of syrup, honey, edible oil and other products, evaluating the texture and taste of products, and ensuring stable product quality.
4. In the field of petroleum and lubricants, it can be used to determine the viscosity of petroleum products and lubricants, evaluate their lubrication performance and flow characteristics, provide data references for the production, storage, and use of petroleum products, and ensure the normal operation of equipment.
The daily maintenance and upkeep of the instrument are simple and easy to implement. Reasonable maintenance can extend the service life of the instrument and ensure long-term measurement accuracy stability. The specific maintenance points are divided into three points:
1. Regular cleaning: After each measurement is completed, the sample tube and falling ball must be cleaned in a timely manner to avoid residual samples from drying up and adhering to the surface of the components, which may affect subsequent measurements; Use specialized solvents during cleaning, avoid using corrosive liquids, and prevent damage to sample tubes and falling balls.
2. Regular calibration: At regular intervals, calibrate the constant of the falling ball and the accuracy of the thermometer to ensure that the size and density of the falling ball have no deviation, and the measurement accuracy of the thermometer meets the requirements; Simultaneously check the horizontal status and angle adjustment function of the instrument, adjust calibration in a timely manner, and avoid measurement errors caused by loose mechanical components.
3. Proper storage: When the instrument is not in use, clean and dry the falling balls, sample tubes, and other components before storing them properly to avoid collision and wear; Cover the instrument with a dust cover and place it in a dry and ventilated environment, away from high temperatures and corrosive gases, to prevent component aging and damage.
Technical parameters
| Principle | Place the small ball into a transparent cylindrical tube containing the sample at a constant temperature. After the temperature stabilizes, flip the transparent measuring component. At this point, the small ball will slowly fall from a high position. Measure the time it takes for the small ball to pass through the engraved line on the cylindrical tube. Calculate the viscosity value of the sample based on the formula and relevant values in the calibration certificate, in mPa · s |
| temperature control | Transparent jacket, heating and cooling cycle controller needs to be equipped separately |
| Jacket inlet and outlet connectors | Outer diameter 10mm |
| Viscosity range test | 0.6 . ... 75000 mPa·s (cP) |
| Temperature Display | LEDdisplay screen |
| temperature range | -20 . .. +120°C |
| Temperature display resolution | 0.1 °C |
| Measure the inner diameter of the tube | 15.95mm |
| Calibration Certificate | Factory calibration certificate |
| Standard Configuration | Falling ball set, tweezers, cleaning brush |
Order Information
| Order Number | number | name | measurement range | Standard or optional |
| V92101 | 1 | borosilicate glass | 0.6 to 10 | Set standard |
| V92102 | 2 | borosilicate glass | 7 to 130 | |
| V92103 | 3 | High quality stainless steel | 30 to 700 | |
| V92104 | 4 | High quality stainless steel | 200to 4800 | |
| V92105 | 5 | High quality stainless steel | 1500 to 45000 | |
| V92106 | 6 | High quality stainless steel | > 75,000 | |
| V92107 | G | Glass | gas | optional |
