A small crank drives the rotor at a pre-selected constant speed through a precision gear train governor. Rotor speeds of 300 or 600 are obtained by setting the position of the speed control lever. Measurements are read directly from the deflection scale. The readings obtained are used to determine the plastic viscosity and yield point of the test fluid.
Gel strength measurements are read directly from the deflection scale. When making gel-strength measurements, force is applied manually by turning the gel knob and observing the maximum reading on the deflection scale before the gel breaks.
The API recommended Torsion Spring, Rotor, and Bob are supplied with the hand-cranked Model 280 Rheometer. A stainless steel sample cup is also included. An optional High Impact plastic carrying case is available.
The Rheometer Cup Heater allows measuring viscosity at elevated temperatures. Heater Cups are fitted with a removable stainless steel sample cup for easy cleaning, and are designed to fit snugly on the Rheometer base. The Thermostat control allows heating up to 200°F (93°C).
Part No. 206984 Model 280 Rheometer
Part No. 206961 Rheometer Cup Heater, 115 Volt
Part No. 206966 Rheometer Cup Heater, 230 Volt