Rotational Viscometer LVM-T2016

Introduction

Rotational Viscometer features a temperature control range of 1°C to 150°C for precise viscosity measurements under varying thermal conditions. It has an auto range selection mode for automatic adjustment to the optimal measuring range. The viscometer includes low viscosity adapter, allowing precise measurement of samples with very low viscosity levels. Our rotational viscometer offers multiple measurement modes, enabling users to select the most suitable testing method for different fluid types and application requirements.

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 detecting the torque required to rotate a spindle. It is widely utilized in pharmaceuticals, cosmetics, paints, petrochemicals, and polymers to measure and control the viscosity of liquids.

Specifications

Measuring Range mPa.s	50000 to 330000 50 to 3.3M 100 to 6.6M 600 to 26.4M
Temperature Control Range	1°C to 150°C
Rotor Speed ()	0.3 to100
Numbers of Rotors	Four kinds of standard configuration: , 27, 28,29.
Measurement Accuracy	Optional: , 15, 16, 18, 25, 31, 34
Repeatability	±1.0% (full range) ± 0.2% (full range)
Power Supply	V 50Hz/60Hz, output DC12V1.5A

Features

Variable Speed Control

Interchangeable Spindle System

High Measurement Accuracy

Real-Time Viscosity Monitoring

Multiple Unit Display

FAQs

1. 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.

2. 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.

3. 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.

4. 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.

5. 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.