product manual: 
"Ink viscous meter is mainly used to detect the viscosity value of the ink, and it can also detect the viscosity increase and the ink flying condition.

Product parameters:

* Copper roller spindle rotation number: I gear 400 rpm / II speed 800 rpm / minute III 1200 rpm
*Power supply voltage: 220V
*Electrical total power: 670 watts (including 370 watts of motor and 300 watts of water tank)
*Water pump flow: ≧10 l/min Constant water tank capacity: 6 liters
* Instrument size: 750 × 500 × 550mm
* Total weight of the instrument: about 70 kg
*Spindle copper roller horizontal error ≦0.03 mm after leveling on the workbench
* Constant temperature water tank temperature adjustment error ≦ 0.5 °C
* ruler measurement accuracy: 0.2 ink viscosity unit
*Retest error of the same machine under the same test conditions ≦±0.5 ink viscosity unit