Rheometer is a direct-indicating, manually operated, rotational viscometer.
The instrument is powered by a hand crank, which drives the spindle through a precision gear train.
The shift cam selects between fixed speeds of 300 and 600 RPM.
A Knob on the hub of the shift cam determines gel strength.
During operation, fluid is contained in the annular space between two concentric cylinders.
The outer cylinder, or rotor sleeve, is driven by the hand crank.
The inner cylinder, or bob, is restrained by a torsion spring.
A dial attached to the torsion spring indicates bob displacement due to friction.
The instrument constants have been adjusted so that plastic viscosity and yield point can be calculated using the 300 and 600 RPM readings.
Plastic Viscosity (cP) = 600 RPM reading – 300 RPM Reading
Yield Point (lb/100 ft2) = 300 RPM reading
Plastic Viscosity Apparent Viscosity, cP = 600 RPM reading / 2
Dimensions: 240x140x400 mm
Weight : 11 kg