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What is the difference between Redwood viscometer 1 and 2?
The jet orifice of redwood viscometer 1 has an internal diameter of 1.62mm and length of 10 mm. The jet orifice of redwood viscometer 2 has an internal diameter of 3.8 mm and length of 15mm. It is used to determine the viscosity of less viscous oils having flow (efflux) time less than 2000 second.
Which type of viscometer is used for high viscosity oils?
Absolute viscosity is reported in centipoise (cP), equivalent to mPa·s in SI units. This method is commonly referred to as the Brookfield method and is described in ASTM D2983. While less common than kinematic viscosity, absolute viscosity and the Brookfield viscometer are used in formulating engine oils.
Which type of Redwood viscometer is used for thin oil?
Redwood viscometer no1 is used to find the viscosity of the _________ liquids. Explanation: The redwood viscometer no1 is used to find out the viscosity of the low viscous liquids.
What are the advantages of Redwood viscometer?
Redwood Viscometer is used for the determination of redwood viscosity and which can be converted to Kinematic viscosity also. It is also used for observing the effect of temperature on viscosity by plotting graph.
What is the temperature range for redwood 1 viscometer?
MTC Thermometer IP 9C, Range: 76 deg C to 122 deg C.
How does a redwood viscometer work?
The redwood viscometer consist of vertical cylindrical oil cup with an orifice in the centre of its base . A hook pointing upward serve as a guide mark for filling the oil . The cylindrical cup is surrounded by the water bath . The water bath maintain the temperature of the oil to be tested at constant temperature .
What is Redwood viscosity?
Viscosity is a measure of fuel resistance to flow. When expressed in seconds Redwood at 100 degrees Fahrenheit, it is the time it takes for a fixed amount of fuel to pass through an orifice of fixed size at 100 degrees Fahrenheit.
How is viscosity determination by Redwood viscometer?
Redwood Viscometer is normally used for the determination of the viscosity of petroleum products. ‘Redwood Viscometer’ determines the viscosity in terms of seconds (which are terms as Redwood seconds), a time taken by oil to pass through a standard orifice, and collection of the same oil in 50 cc flask.
How does Redwood viscometer work?
What is meant by Redwood viscometer?
[′red‚wu̇d vi′skäm·əd·ər] (engineering) A standard British-type viscometer in which the viscosity is determined by the time, in seconds, required for a certain quantity of liquid to pass out through the orifice under given conditions; used for determining viscosities of petroleum oils.