What i learned in week 13? - Coggle Diagram
What i learned in week 13?
Terminology of viscosity
Kinematics Viscosity (𝜈)
Absolute (or Dynamic) Viscosity (𝜇)
Capillary viscometer:(Laboratory type)
Reverse Flow Viscometers
Efflux cup viscometers: (Sayboltviscometer)
Falling ball viscometers
Stoke’s falling ball principle
The instrument then converts the torque value into viscosity.
The viscosity depends on the geometry of the spindle (its shape and size) and the speed of rotation.
Vane and T-bar spindles
The spiral spindle
The disc spindle
Humidity is the term connected with the amount of water vapor present in air or gas.
Typical measurement methods
Electronic hygrometer (capacitive type)
Chilled-mirror dewpoint hygrometer
Hair hygrometer & hair hygrograph
Lithium chloride dewpoint hygrometer (Dewcel)
pH is the measurement of the hydrogen ion activity in a liquid solution.
Colorimetric pH measurement
Measure the pH of a solution by changing of color.
A natural example
The difference in ion concentrations between the two cell halves will develop between the two electrodes.
The greater the difference in concentrations between the two sides, the greater the voltage produced by the cell.
Cleaning in dirty process applications
Weight measurement (continue)
Measure electrical capacitance of a conductive rod inserted vertically into a process vessel.
two basic varieties
one for conductive liquids
one for nonconductive liquids
type of measurement (continuous level, interface or point level)
physical or chemical changes to material in container
material to be measured
vapors in the air space with temperature changes or heavy dust
accuracy and repeatability
solids or liquids to be measured
range or height of measurement