CPR Rotator

The Compact Pine Rotator (CPR) integrates the motor controller unit, motor unit, and shaft into a single-piece rotator body. The built-in shaft is compatible with standard 12-mm OD rotating disk electrode (RDE) and rotating cylinder electrode (RCE) tips.

The CPR rotator features a solid-state controlled servo-system capable of rotating an electrode at rates between 100 and 8,000 RPM. The electrode rotation rate is set using a convenient digital push button pot located on the front panel of the control box. The actual rotation rate is calibrated to within 3% of the front panel setting.

The main body of the rotator is easily raised or lowered along a vertical support rod, making immersion or removal of the rotating electrode quick and easy. The base is made from a chemically resistant material.

A group of banana jacks on the back panel of the CPR rotator provide flexible control of the rotator motor. One jack is a voltage input that can be used to control the rotation rate of the electrode (4000 RPM per volt). Another jack is a voltage output signal that is proportional to the actual rotation rate (1000 RPM per volt). A third jack is a TTL signal input that can be used to turn the motor on or off. Other jacks provide a signal ground (DC common) and an earth ground (via the third prong on the power cord).