Cole-Parmer GP laboratory mixer ensures accurate, dependable motor speed control with soft-start feature and smooth, gradual adjustment to the speed setting. Constant speed is maintained electronically via automatic compensation for changes in load torque demands at both high and low speeds. Built-in motor current compensation minimizes speed drift with changes in load. Motor current limiting protects the system in case of a locked rotor condition. Output circuit protection protects against inadvertent output shorting.
The mixer rotates at 40 to 4000 rpm with a maximum torque of 9.5 in-oz (6.7 N·cm). The speed control knob is used to turn on and set the speed of the mixer motor and provides a 100:1 adjustment range. The LED indicates the mixer is powered on when it is green. When it flashes, it indicates a limit condition has been reached, such as an overtemperature or over-current situation.