Rotor failure of the Bollerfi viscometer rotor, about the use of the viscometer, the rotor

This is normal, poor lubrication performance, resulting in the rotor can not be unscrewed, it is recommended to use some lubricating oil or engine oil to coat it, remember to twist and reverse screwing intermittently, do not overexert force, otherwise it will cause damage to the rotor or greater error in the future. This problem is very common, you don't have to worry, and the leader won't trouble you, it's a very normal failure! Good luck at the end!

It must have been caused by the reverse twisting. Clockwise is tightened, counterclockwise is loosened.

The Brookfield viscometer is the world standard for viscosity measurement, and a combination of rotor and speed is selected according to the operating procedures of the instrument, and each combination of rotor and speed forms a full scale range (measurement range); The principle of combination selection is to make the viscosity of the standard around 50% of the full scale, less than 10% of the full scale and more than 90% of the range is inappropriate, it is worth noting that although the combination of a large rotor (small rotor) at low speed and the combination of a small rotor (large number) and high rotation speed can obtain approximately the same measurement range, in order to avoid eddy currents at high speeds and make the measurement results unstable and reduce the wear and tear of the instrument, Try to choose a combination of a small rotor and a low speed.

For more information, please refer to:

The comparison of viscosity values must be meaningful when the temperature, speed, rotor, and viscometer brand are the same, and you should indicate the above parameters when giving the viscosity value.

The conventional viscometer of BLF is the jewel bearing knob connector, which means that the rotor needs to be unscrewed by yourself when pressed and removed, but it should be noted that the buckle connecting the rotor is reversed, the left is installed, and the right is removed. Another thing to note: when loading and unloading the rotor, pinch the connector and lift it slightly upwards to avoid damaging the shaft tip seat.

Brookfield viscometer LVDV-C is equipped with 4 rotors as standard The range of the four rotors increases sequentially, and the torque is less than 10%, indicating that the viscosity value of the tested product is too small to be suitable for the current test conditions, there are two solutions: 1. Do not replace the rotor is to increase the speed, and the second is to replace the rotor with a small range (such as the 62nd rotor to 61) and slowly adjust the speed to find the appropriate test conditions; If the torque of the No. 61 rotor is still less than 10% at 100 rpm, then the accessory ultra-low viscosity adapter ULA (minimum measurement 1CP) is required

Bo Lerfei's digital sticky beam smile meter, as far as I know, can't be so bad? Are you looking for non-manufacturer personnel with slag? I recommend that you contact the staff of Brookfield for details.

That way you don't have to worry in vain. Diagnostic problems should be targeted, isn't it better for the personnel of the Bellerfei manufacturer? 400-113-3003 (Brookfield toll-free**)

I don't want to give you specious and gruffy answers, with the words maybe, maybe. Hope that helps.

There is a problem with the sample that is detected, it may be that the sample enters the rotor connector and is stuck, and the sample cup must be cleaned and cleaned after each use.

See if it works properly? Viscosity readings with torque values greater than 10 percent and less than 100 percent can be referenced. If it can be measured normally, this is not a big concern.

The information displayed by the DV-2 itself has a shear rate stress, so you don't need to calculate it yourself!