Viscosity: It is a mensurate of resistance offered past times 1 layer of fluid to the other layer of the same fluid during motion.
Redwood Viscometer is unremarkably used for decision of viscosity of crude products.
'Redwood Viscometer' determines the viscosity inward price of seconds (which are price every bit Redwood seconds), a fourth dimension taken past times oil to overstep through a criterion orifice together with collection of the same oil inward fifty cc flask.
Originally Redwood Viscometer was developed for measure of viscosity of crude products.
'Redwood Viscometer' are of 2 types:
1. Redwood Viscometer No.1 (For fluid having viscosity corresponds to Redwood seconds less than 2000)
2. Redwood Viscometer No. 2 ( For fluid having viscosity corresponds to Redwood seconds greater than 2000)
or Redwood Viscometer No. 1 & 2 is used depending on fourth dimension of oil menstruum through orifice at desired temperature is greater or less than 2000 seconds. Normally viscosity of highly gummy fluids is determined past times utilisation of Redwood Viscometer 2.
The departure betwixt Redwood Viscometer 1 & 2 is the departure of orifice diameter.
Formula to convert Redwood seconds to kinematic viscosity unit of measurement i.e. centistokes.
= At-B/t (Where Influenza A virus subtype H5N1 = 0.26 together with B = 171).
The absolute viscosity is establish past times measuring the density of the fluid whose viscosity is beingness measured. Thus, Absolute Viscosity = Kinematic Viscosity x Density
Procedure:
1. Fill the oil loving cup amongst oil to the required oil grade indicated past times marking pointRedwood Viscometer is unremarkably used for decision of viscosity of crude products.
'Redwood Viscometer' determines the viscosity inward price of seconds (which are price every bit Redwood seconds), a fourth dimension taken past times oil to overstep through a criterion orifice together with collection of the same oil inward fifty cc flask.
Originally Redwood Viscometer was developed for measure of viscosity of crude products.
'Redwood Viscometer' are of 2 types:
1. Redwood Viscometer No.1 (For fluid having viscosity corresponds to Redwood seconds less than 2000)
2. Redwood Viscometer No. 2 ( For fluid having viscosity corresponds to Redwood seconds greater than 2000)
or Redwood Viscometer No. 1 & 2 is used depending on fourth dimension of oil menstruum through orifice at desired temperature is greater or less than 2000 seconds. Normally viscosity of highly gummy fluids is determined past times utilisation of Redwood Viscometer 2.
The departure betwixt Redwood Viscometer 1 & 2 is the departure of orifice diameter.
Formula to convert Redwood seconds to kinematic viscosity unit of measurement i.e. centistokes.
= At-B/t (Where Influenza A virus subtype H5N1 = 0.26 together with B = 171).
The absolute viscosity is establish past times measuring the density of the fluid whose viscosity is beingness measured. Thus, Absolute Viscosity = Kinematic Viscosity x Density
Procedure:
2. Heat the H2O at uniform temperature.
3. When required temperature of oil is attained, elevator the ball to a higher house the orifice hole.
4. Allow the oil to overstep through it (start the halt watch) together with collect fifty CC of oil inward the volumetric flask.
5. The measured seconds is inward price of viscosity of oil measured.
To know to a greater extent than almost the Redwood viscometer, refer to next best mass on thermodynamics past times P K Nag
