Nerun: Correction of Digital Viscometers

We are often very concerned about the accuracy of viscometers. Here are some tests that can help us understand the condition of a viscometer: 

(A) Bearing damage will result in incorrect and reproducible viscometer readings. Alternate testing of the following methods can help you assess the condition of these mechanisms:

1. The power switch of the digital viscometer is turned on, but the motor does not rotate.

2. Turn the rotor connecting screw 15 degrees, and release it to make it rotate automatically. 

3. If it can rotate smoothly every time, it means that there is no problem with the bearing.

Press the measurement key, the viscosity value should be 0mPa·s. 

If the connecting screw turns slowly or jerky, it means that the viscometer is not working well and needs to be repaired. 

(B) Finally the viscometer can be calibrated using standard viscosity samples. Carefully measure these standard viscosity samples according to the operating manual. The standard viscosity sample (error range within ±1%) provided by Nirun is a very satisfactory choice. Due to the possibility of unpredictable fluid behavior, we do not recommend using other fluids for calibration. 

(C) If the viscometer can pass all the above tests, then the performance of the viscometer should be satisfactory. If you still feel that the measured data is unreasonable, you need to contact the manufacturer.