Kinematic Viscometer LKV-T2013

Introduction

Kinematic Viscometer features a clear cylindrical constant temperature bath with a capacity of 23 liters. It allows visual monitoring of the fluid samples. It can simultaneously measure 3 samples, enhancing its efficiency. Supports a broad range of bath temperatures from ambient to 180°C. Includes 7 Cannon-Fenske reserve-flow capillary viscometer tubes. The unit is equipped with advanced a mercury thermometer that has a scale division of 0.1°C for precise temperature readings.

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

Applications

Kinematic Viscometer is ideal for applications in various industries, including petrochemical, automotive, and research laboratories, where accurate viscosity measurements are crucial.

Specifications

Ambient temperature	-10°C to 35°C
Relative humidity	≤ 85 %
Capillary viscometer	7 pieces of Cannon-Fenske reserve-flow capillary viscometer tubes in a group
Stirring motor	6 W, 1200 rpm
Sample quantity	3 pieces at the same time
Bath temperature	Ambient temperature to 180 °C
Measurement range	100°C to 150 °C or 150°C to 200 °C
Bath cubage	23 L
Temperature controlling accuracy	± 0.1 °C
Inner capillary viscometer diameters	1.02, 1.26, 1.48, 1.88, 2.20, 3.10 and 4.00 mm
Mercury thermometer scale division	0.1 °C

Features

Mercury thermometer

Cannon-Fenske reserve-flow capillary tubes

Electric stirring motor

Multiple sample measurement

Improved efficiency

FAQs

1. What kind of bath fluid should be used in the Kinematic Viscometer temperature chamber?

It Kinematic Viscometer requires different bath fluids depending on the target temperature range. For tests up to 100?°C, distilled water or water-glycol mixtures are suitable due to their ease of use and thermal conductivity. For high-temperature applications (above 100?°C and up to 180?°C), high-temperature silicone oils or specialized heat transfer fluids are preferred, thanks to their thermal stability and low vapor pressure. We recommend choosing bath fluids that are chemically compatible with the device's materials and easy to maintain over repeated use cycles.

2. How does the reverse-flow capillary design in Kinematic Viscometer benefit the testing process?

The Kinematic Viscometer utilizes Cannon-Fenske reverse-flow capillaries that are specifically designed for transparent, Newtonian fluids. reverse-flow capillaries direct the sample upward during measurement, minimizing errors caused by gravity drainage and improving timing precision. This configuration also helps reduce air bubble formation and ensures smoother meniscus movement through the tube. As a result, the device provides more consistent readings, especially when testing light oils or low-viscosity fuels.

3. Are there any limitations in using the Kinematic Viscometer for non-Newtonian fluids?

It Kinematic Viscometer is optimized for Newtonian fluids, those that maintain constant viscosity under a fixed shear rate and temperature. It is not suitable for testing non-Newtonian fluids such as pastes, emulsions, or polymer suspensions, which change viscosity with flow conditions. These materials require viscometers like rotational, cone-and-plate, or rheometers that are capable of analyzing shear-dependent behavior. Using the viscometer for such substances may yield incorrect or inconsistent results.

4. What should I do if the bath fluid in the Kinematic Viscometer starts to degrade or discolor?

Kinematic Viscometer signals potential maintenance needs when the bath fluid becomes discolored, cloudy, or emits an unusual, odor indications of degradation due to oxidation, overheating, or contamination. We recommend draining and replacing the compromised fluid with a fresh, compatible heat transfer liquid and thoroughly cleaning the bath chamber to eliminate residue buildup. Continued use of degraded fluid may compromise temperature accuracy and potentially damage critical components like the stirrer or heating element. Always follow our guidelines for usage limits and replacement intervals to ensure optimal performance.

5. How should I clean the capillary tubes and bath in the Kinematic Viscometer after testing?

Kinematic Viscometer requires regular cleaning of the capillary tubes to ensure accuracy and avoid cross-contamination between tests. Immediately after use, rinse the capillaries with a solvent that dissolves the sample, followed by a quick-drying agent like acetone or hexane. The bath fluid should be filtered or replaced if it appears contaminated, and the bath chamber and stirrer should be wiped clean using mild, non-abrasive lab-grade cleaning solutions. Maintaining a clean system helps extend instrument life and ensures test reliability.