Kinematic viscosity of liquids (either fuel or lubricating oil) is measured using Kinematic Viscometer at 40oC.

This unit has six calibrated precision capillary viscometer tubes inside a cylindrical glass oil bath, which are interchangeable and may be selected from a range of nine tubes, measuring viscosities between 3 and 2000 mm2/s.

A six channel timer is fitted for measuring flow times for a fixed volume of fuel to flow under gravity through a capillary of the viscometer.

The kinematic viscosity is the product of measured time and calibration constant of the viscometer tube used in viscometer.

A cooling tube fitted in the bath is used for tests below and slightly above ambient, and also to quickly lower the bath temperature when needed.