Sumudu invents realtime viscosity meter
The Uva Wellassa University (UWU) is the first ever entrepreneurial
university in Sri Lanka. It fulfills the requirement of producing
undergraduates with entrepreneurial skills much needed for the country.
Daily News Business highlighted its importance recently.
This is the second of a series of articles based on final year
student research reports on value addition which will be useful for
industrialists as well as readers. The objective of this series is to
encourage and introduce country‚Äôs future entrepreneurs, to make the
industrialists and other relevant parties aware of potential businesses.
Interested parties can contact the University for more details.
P. Sumudu Dileepa Dayarathne, a final year student, specialized in
materials science and technology under science and technology degree
program of Uva Wellassa University carried out a project titled
Construction of a Real Time Viscosity Meter to measure viscosity in
production lines under the supervision of K.W.M.M.P. Wasala and Dr.
Athula Wijesinghe of the University.
I did electronic projects as a hobby from my school days. After
entering the university I turned to the electronic and robotics field
more than before.
Some of my projects include Camera based Robotic Guide Program,
Obstacle Avoiding and Wall Following Rover and IR serial data
communicator, he said.
This viscometer is a low cost, portable, industrial applicable
device, which has a user friendly controlling unit. This can be used to
measure viscosity of Newtonian fluids.
The objective of the work is to design and construct an inexpensive,
real time viscometer that could be used in industrial environments as
well as in laboratory environments, that can be operated by unskilled
This viscometer is capable to measure absolute viscosity in real time
and it indicates in digital manner with temperature.
Digital real time viscometer consists with DC motor and motor
controlling unit, spindle, temperature calculation unit, torque
calculation unit, viscosity calculation unit and LCD.
DC motor and motor controlling unit measures the torque required to
attain constant speed of a spindle and it converts to the viscosity by
torque calculation unit, and viscosity calculation unit.
Torque values of the DC motor were calibrated by using another newly
designed technique. Using this device, absolute viscosity values can be
obtained. Also it can communicate and transfer data to a computer
through the serial port for further analysis.
Viscosity is a fundamental characteristic property of all liquids. It
describes the internal resistivity against fluid flow. Measuring
viscosity is a crucial fact in various fields in Industry and research.
Many devices have already been made to measure fluid viscosity.
viscometer invented by Sumudu
However, due to their high cost, it is not affordable for small-scale
industries and academic research. Therefore, it is essential to have a
low cost device.
It can be used as a portable viscometer as well as a stable
viscometer. Also this can be used to measure viscosity of steady fluids
and dynamic fluids.
It can measure viscosity of wide range by using series of spindle
types. Spindles designed to adapt various measuring conditions. Such as
portable condition, fixed condition, low viscosity condition, heavy
viscosity condition and steady or dynamic fluid condition. Spindle can
be easily changed according to the measuring condition and can select
relevant mode by simple menu.
Processing units and the display unit of the viscometer can be
assemble separately from the spindle/measuring unit. As a result, this
can easily integrate with any industrial environment or application. And
this viscometer withstand against any industrial environment.
Therefore it is capable to use within the runtime production process
and can be incorporated with quality control process.
With few modifications this viscometer can be used to measure
viscosities of same liquid sample for different shear rates.
These data may be useful to researchers in industries or researchers
in academic institutions.