The CCS viscometer is a special rotational viscometer for the determination of the low temperature viscosity of engine oils.
The CCS contains a temperature-controlled test chamber. The sample is pumped into the test chamber via a vacuum pump. There it is cooled down to the required temperature. Via a stator, which is operated with a constant force, the resistance of the stator in the sample at the test temperature is converted into the viscosity in mPa · s. The viscosity of the stator is then measured at the test temperature.