How does a Brookfield viscometer work?
Brookfield viscometers employ the well-known principle of rotational viscometry; they measure viscosity by sensing the torque required to rotate a spindle at constant speed while immersed in the sample fluid. The torque is proportional to the viscous drag on the immersed spindle, and thus to the viscosity of the fluid.
How do you pick a spindle for a Brookfield viscometer?
If the reading is below 10% at the highest speed, the next largest spindle should be used. To test a fluid at multiple speeds, choose a spindle that will produce readings between 10% and 100% for at least three speed settings.
Why are viscometers used?
Viscometers are instruments that measure the fluid flow and viscosity of liquids. The viscosity of a liquid can affect its performance, whether this is pumping or piping it, or how it performs for dipping and coating. Measuring viscosity, therefore, applies to a wide range of materials, including: Oil.
Which spindle is used to measure viscosity?
This advantage is maximized by using cone spindle. One word of caution worth mentioning is that cone spindle should also be tempered at the same temperature as the sample material before making the viscosity measurement.
What is Brookfield viscosity test?
The Brookfield Dial Reading Viscometer measures fluid viscosity at given shear rates. Viscosity is a measure of a fluid’s resistance to flow.
How often should viscometer be calibrated?
Many viscometer manufacturers recommend factory calibrations be performed on an annual or semi-annual basis. It is recommended that a system checkout be performed on an annual basis for oscillating piston viscometers, allowing one to verify proper operation within our 1% accuracy specification.
What is a Brookfield test?
How long does a viscosity test take?
Up to 30 minutes may be necessary and possibly longer with some materials. Two flow time measurements should be obtained for each sample.
What does it mean if your blood viscosity is high?
Elevated blood viscosity is the result of either red blood cell shape deformity or a pathological increase in serum proteins, red blood cells (RBC), white blood cells (WBC), or platelets.
What is the Brookfield dv2t viscometer?
the advanced features of the DV2T readily available. The Brookfield DV2T Viscometer measures fluid viscosity at given shear rates. Viscosity is a measure of a fluid’s resistance to flow. You will find a detailed description of the science of
How do I change the torque on my dv2t viscometer?
• Remove the spindle and level the DV2T Viscometer • Gently push up on the viscometer coupling. • Turn the coupling until the % Torque reading is 10 – 15 %. • Gently let go of the coupling.
How do I calculate the full scale viscosity range for dv2t?
The full scale viscosity range for any DV2T model and spindle may be calculated using the equation: Full Scale Viscosity Range [cP] = TK * SMC * 10,000