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Notes on rotational viscometers:

1. Carry out at the specified temperature, because the temperature has a very important influence on the measured value.

2. The liquid to be tested should not have a large number of air bubbles.

3. Be sure to change the speed while the motor is running.

4. The connecting screw and rotor should be kept clean, otherwise the correct connection and rotation stability of the rotor will be affected.

5. The rotor should be cleaned in time every time it is used up (do not clean it on the instrument), and there should be no situation where it is not cleaned when it is used up, otherwise it will affect the next measurement result.

Basic steps of rotational viscometer operation:

1. Prepare the sample to be tested and place it in a beaker or container with a diameter of not less than 70mm to accurately control the temperature of the liquid. When the temperature is adjusted to the right, the measurement is ready.

2. Before measuring, check whether the bubbles on the viscometer are in the middle position, if not, set "0".

3. Turn the left and right adjustment knobs to adjust the bubbles to the middle position, which can be measured.

4. Screw the optional rotor into the connecting screw, and turn the lifting knob. The instrument is slowly lowered, and the rotor is gradually immersed in the liquid to be measured, until the rotor liquid level mark is flush with the liquid level, and the rotation speed is set to perform the measurement.

5. Take the reading and record the result. ViscosoftBasic software for data transfer. The data is displayed in tabular form and can be saved as an Excel file for subsequent analysis and processing. The optional Viscosoftplus software can realize the operation of the instrument controlled by the computer. The software can realize the preset of various analysis methods, and the data information is displayed in the form of charts. Viscosity data can be consulted with reference to different parameters.