Kinematic Viscometer LKV-T2010

Introduction

Kinematic Viscometer is designed with hard glass bath and electric stirring device with 1200 rpm stirring motor. Designed as per D445 standard configuration, features ambient to 100°C of temperature range and 0 to 9999.9 s of time range. Compact design with PT100 sensor for uniform bath temperature and 6 capillary Pinkevitch viscometer tubes, it is an ideal unit to determine kinematic viscosity of liquid petroleum products (Newtonian fluids) at a constant temperature.

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 used to measure flow times for a fixed volume of fuel to flow under gravity through a capillary of the viscometer across the fields of petroleum and its products industries, research and development department etc.

Specifications

Ambient temperature	15 to 35°C
Relative humidity	≤ 85%
Capillary viscometer	6 capillary Pinkevitch viscometer tubes
Stirring motor	1200 rpm
Temperature range	Ambient to 100°C
Temperature accuracy	±0.1℃
Time range	0 to 9999.9 s
Temperature sensor	PT100
Capillary viscometer diameter	0.6 mm, 0.8 mm, 1mm, 1.2 mm, 1.5 mm, 2 mm
Bath capacity	12 L
Bath size	Φ255×240 mm
Dimension (W×D×H)	500×310×500 mm
Net weight	11.5 kg

Features

Hard glass bath, allow personnel to observe liquid flow

Electric stirring device with 1200 rpm stirring motor

Ambient to 100°C of temperature range and 0 to 9999.9 s of time range

PT100 sensor for uniform bath temperature

6 capillary Pinkevitch viscometer tubes with different inner diameters

Designed as per D445 standard configuration

An ideal unit to determine kinematic viscosity of liquid petroleum products (Newtonian fluids) at a constant temperature

FAQs

1. How do we perform a viscosity test using the Kinematic Viscometer ?

The Kinematic Viscometer requires a suitable capillary tube for filling it with the test fluid. The tube is then placed in the temperature-controlled bath, which is heated to the required test temperature. Once the fluid reaches thermal equilibrium, the time it takes for the sample to flow between two marks in the tube is measured using the built-in timer. The kinematic viscosity is calculated by multiplying this flow time with the calibration constant of the specific capillary tube. Ensuring stable temperature and precise timing is critical for reliable results.

2. Can the Kinematic Viscometer be used for samples that have particles or additives?

It Kinematic Viscometer is best suited for testing clean, homogenous Newtonian fluids without solid particles. Samples containing waxes, particles, or certain additives may settle, interfere with flow, or clog the capillary tube. If such samples must be tested, they should first be preheated and filtered to remove suspended matter. Improper sample preparation can lead to inaccurate viscosity values or damage to the tube. Always clean the viscometer tube thoroughly after testing samples that may leave residues.

3. What should we do if the Kinematic Viscometer ’s bath takes too long to heat up?

The Kinematic Viscometer may heat up slowly if the ambient room temperature is not within the recommended range of 15–35°C. Check if the bath liquid is suitable for the required temperature, as some liquids do not conduct heat well. Inspect the heating element and stirrer motor to ensure they are functioning correctly, since poor circulation can lead to slow heating. If the issue continues, the temperature controller might need recalibration or the heating coil may be partially worn out. Avoid overfilling the bath, as this can reduce heating efficiency.

4. What should we do if we get inconsistent results while using the Kinematic Viscometer ?

Kinematic Viscometer may show inconsistent results if there are issues with tube cleanliness, sample temperature stability, or timing accuracy. Always ensure that the capillary tube is free of contamination or air bubbles and that the fluid is equilibrated to the set bath temperature before starting the test. Confirm that the timer is functioning properly and that the correct calibration constant is being used for the selected tube. If the readings still vary, try switching to another tube or run a calibration check using certified reference fluids. Maintaining a test log can help track recurring issues.

5. What safety steps should we follow while using the Kinematic Viscometer ?

It Kinematic Viscometer should always be operated on a flat, vibration-free surface in a well-ventilated lab environment. Use only recommended bath fluids and ensure the fluid level never falls below the minimum required mark. Heated components and fragile glass tubes must be handled carefully to prevent burns or breakage. All electrical connections must be secure and grounded before turning on the unit. Keeping the area clear of flammable materials enhances safety during high-temperature operation.