Technical

(1) Care should be taken when loading and unloading the rotor. When loading and unloading, the connecting screw should be slightly lifted to operate. Do not use too much force, and do not force the rotor laterally to prevent the rotor from bending.

(2) Please do not put the viscometer with the rotor installed on its side or upside down.

(3) Keep the connecting end face and thread of the connecting screw and rotor clean, otherwise it will affect the shaking of the rotor.

(4) The viscometer should be held up and down by hand to prevent the viscometer from falling due to its own weight.

(5) After changing the rotor, please input the new rotor number in time. After each use, the replaced rotor should be cleaned (wiped clean) in time and put back in the rotor holder. Please do not leave the rotor on the instrument for cleaning.

(6) When changing the liquid to be measured, please clean (wipe clean) the rotor and the rotor protection frame in time to avoid measurement errors caused by the confusion of the liquid to be measured.

(7) The instrument and rotor are matched one-to-one, please do not confuse several instruments and rotors.

(8) Please do not disassemble and adjust the instrument parts at will.

(9) When moving and transporting the instrument, put the yellow cap on the connecting screw, tighten the screw, and put it in the packing box.

(10) After installing the rotor, please do not rotate it for a long time without liquid, so as not to damage the shaft tip.

(11) Many of the suspensions, emulsions, polymers and other high-viscosity liquids are "non-Newtonian liquids", and their viscosity values vary with conditions such as shear speed and time, so in different rotors, The inconsistency of the results measured under the speed and time is a normal situation, not an instrument error. The determination of non-Newtonian liquids should generally specify the rotor, speed and time.

(12) Doing the following will help to measure more accurate values:

Precisely control the temperature of the liquid being measured.

Immerse the rotor in the liquid to be tested for a sufficient time so that the temperature of the two is the same.

Maintain fluid uniformity.

When measuring, place the rotor in the center of the container, and be sure to install the rotor protection frame.

Keep the rotor clean and shaken.

When the high speed measurement immediately changes to low speed, it should be shut down, or the measurement time at low speed should be a little longer to overcome the error caused by the rotational inertia of the liquid.

Use No. 1 rotor when measuring low viscosity, and No. 4 when measuring high viscosity.

When measuring viscosity at low speed, the measuring time is relatively longer.

During the measurement process, due to the need to exchange the rotor, the liquid to be measured, etc., after changing the position of the viscometer by rotating the lifting chuck, the horizontal position of the viscometer should be checked and adjusted in time.