Rotational Viscometer LVM-T310

Introduction

Rotational Viscometer offers a rotation speed of 0.1 to 200 , ensuring accurate viscosity measurement for a wide variety of fluids. It includes a measurement accuracy of ± 1.0 %. The instrument has high repeatability, providing consistent and reliable viscosity measurements. Our rotational viscometer features integrated temperature probes for real-time monitoring during viscosity measurements.

 

This analytical equipment is designed to meet the rigorous requirements of modern laboratory operations, ensuring high precision, reliability, and ease of use for various experimental applications.

Applications

Rotational Viscometer measures the viscosity of a fluid by rotating a spindle or cylinder within the sample. It is widely utilized in the beverage, paint, and coating industry for measuring the viscosity of paint, sauces, and beverages.

Specifications

Measurement Range	Medium Viscosity Sample: 50 to 10M (mPa. s/cP) Low Viscosity Sample: 5 to 1M (mPa. s/Cp)
Rotors	#, 27#, 28#, 29# four spindles Optional: SC4- 14, 15, 16, 18, 25, 31, 34
Rotation Speed	0.1 to 200
Measurement Accuracy	± 1.0 %
Repeatability	0.2 %
Thermosal Temperature Range	RT + 10° C to 250° C
Power Supply	110V and 220 V/ 50 Hz and 60Hz

Features

Automated Spindle Detection

Chip Processor

Programmable Test Sequences

Real-Time Graphing

Viscosity Index Determination

FAQs

1. Can the Rotational Viscometer be used for different sample types such as liquids, lotions, solutions, and gels in cosmetics and pharmaceutical

Yes, the Rotational Viscometer can be used for a wide variety of samples, including liquids, lotions, solutions, and gels commonly used in the cosmetics and pharmaceutical industries. However, the suitability depends on whether the sample’s viscosity falls within the measuring range of the viscometer.

2. What should I check before using the Rotational Viscometer for my sample?

Before testing, you must confirm: 1. The viscosity range of your sample. 2. The measuring range of the viscometer (as given in the specifications). 3. That your sample’s viscosity is within the instrument’s measurement range. If your sample’s viscosity is higher or lower than the instrument’s capacity, the results will not be accurate.

3. Do I need to know the maximum viscosity of my sample?

Yes. Knowing the maximum viscosity of your sample helps you decide whether the viscometer is suitable. This ensures accurate and reliable readings.

4. Why is it important to cover the spindle of Rotational Viscometer during measurement?

The spindle of Rotational Viscometer must always be fully immersed in the sample during testing. If it is not properly covered, the instrument will not provide accurate viscosity measurements, and the results may vary.

5. If my sample fits within the viscosity range, can I use Rotational Viscometer without issues?

Yes. If your sample’s viscosity is within the measuring range of the , and the spindle is properly immersed, you can use the viscometer confidently for accurate and repeatable measurements.

6. How can user select the appropriate spindle for sample in a rotational viscometer?

It supplies advanced rotational viscometer. Selecting the correct spindle and speed is crucial for accurate viscosity measurements. Aim for a torque reading between 20% and 90% of the instrument's full scale to ensure optimal performance. If the torque is too low, the measurement may be inaccurate; if it's too high, it can strain the instrument. Start with a spindle that matches the expected viscosity range of your sample. If the reading is below 20%, switch to a larger spindle or increase the speed; if it's above 90%, use a smaller spindle or decrease the speed. For unknown viscosities, begin with a smaller spindle at a lower speed and adjust accordingly. Always refer to the viscometer's manual for specific spindle and speed combinations tailored to your instrument model.

7. What factors affect the accuracy of viscosity measurements in a rotational viscometer?

It supplies advanced rotational viscometer. Several variables can influence viscosity readings. Temperature fluctuations are particularly significant; even a 0.5°C deviation can cause a viscosity change of over 5% in some liquids. Ensure consistent sample temperature, ideally within ±0.1°C of the desired point. The choice of container is also vital; using an inappropriate outer cylinder can lead to substantial errors. Additionally, selecting the correct spindle and speed is essential to maintain torque readings within the optimal range. Lastly, ensure the sample is free from air bubbles and contaminants, as these can distort measurements.

8. How can user achieve consistent and repeatable results with a rotational viscometer?

It supplies premium rotational viscometer. Consistency in viscosity measurements is achieved by standardizing test conditions. Maintain constant sample volume, temperature, and container type. Use the same spindle and speed settings for each test. Allow the sample to reach thermal equilibrium before testing. Ensure the viscometer is calibrated regularly and that the spindle is clean and free from residues. Perform multiple measurements and average the results to account for any minor inconsistencies. Implementing these practices will enhance the reliability of your viscosity data.

9. What are the common calibration errors in rotational viscometers and how can they be avoided?

It supplies advanced rotational viscometer. Calibration errors can arise from various sources. Temperature fluctuations during calibration can lead to inaccurate readings; therefore, it's essential to use a stable, temperature-controlled environment. Air bubbles in the sample chamber can interfere with spindle rotation, so ensure thorough degassing of the sample. Spindle contamination from previous samples can affect subsequent measurements; clean the spindle between tests using appropriate solvents. Using an incorrect spindle for the sample's viscosity range can result in erroneous data; always refer to the instrument's manual for guidance. Regular calibration with standard reference materials is also recommended to maintain measurement accuracy.

10. How can user prepare samples for accurate viscosity measurement with a rotational viscometer?

It supplies advanced rotational viscometer. Proper sample preparation is critical for obtaining accurate viscosity readings. Avoid shaking or stirring the sample prior to measurement, as this can introduce undefined shear forces. Use consistent methods and tools for sample application, such as a spoon or spatula. Ensure the sample is free from air bubbles, as these can simulate non-Newtonian behavior and skew results. Measure the correct volume as specified by the viscometer's guidelines; overfilling or underfilling can lead to errors. Allow the sample to reach thermal equilibrium before testing to minimize temperature-induced viscosity changes. Prevent the sample from drying out, as this can cause an increase in measured viscosity.