Please answer to the following questions:

1. What is the difference between the LV, RV, HA and HB models?

A. Different cover colors
B. Different speed sets
C. Different spring strengths

2. What does the ‘LV’ from the model number stand for?

A. Laminar Viscosity
B. Low viscosity
C. Leopold Viscosity

3. Does the temperature matter when you check for calibration using a Brookfield Viscosity Standard fluid?

A. Yes, it is critical
B. No, ambient temperature is just fine when checking for calibration
C. No, the viscosity doesn't change too much with the temperature

4. Whenever you are handling the viscometer's shaft :

A. Lift it to protect the pivot point and the pivot point support (jewel bearing)
B. It should be pushed to the side using reasonable force
C. Pull down on it: this way the spindle can be easily attached

5. Is it true that the viscosity has to be measured at variable shear rate to determine if a fluid is Newtonian?

A. No, all fluids are Newtonian
B. Yes, the viscosity can change with variable shear rate
C. No, one measuring point is enough to conclude if a fluid is Newtonian

6. The fluid history has nothing to do with viscosity measurement. True or false ?

A. Pure and simple false
B. True, why should I worry about the past?
C. False, because the viscometer spindle cancels out any of the fluid's history when it shears the sample

7. The torque percentage is displayed by all Brookfield units. What is the maximum torque an instrument can reach?

A. 10%
B. 100%
C. There is no maximum value, it can be anything

8. Given a certain spindle and speed, is the torque percentage proportional to the viscosity measured?

A. No
B. Yes
C. Yes, but not directly proportional

9. All Brookfield units display the torque percentage. What is the minimum acceptable torque percentage?

A. 10%
B. 0%
C. 15%

10. What do you do when the unit fails your periodical calibration check?

A. Repeat the test the second day
B. Send it in to Can-Am Instruments for calibration
C. Adjust the unit to read within the calibration range

11. How often do we recommend that you have your viscometer calibrated by a Brookfield representative?

A. Every 6 months or whenever it fails your calibration check
B. Once a year or whenever it fails your calibration check
C. Depending on your calibration program, usually every 9 months

12. After turning the unit on, what should be checked before going any further?

A. If the unit has the spindle attached
B. If the unit is leveled
C. If the power cord is properly plugged in

13. What is the minimum number of shaft rotations you have to allow for before taking a reading?

A. Recommended at least 4 spindle rotations
B. The reading can be taken right away or anytime
C. The standard time for all models using any spindle at any speed is 20 seconds

14. Does the container shape affect the viscosity measurement?

A. No, the viscosity is measured by the spindle, around the spindle
B. No, the temperature change is what I have to watch for
C. Yes it does

15. When measuring viscosity, is the torque percentage indication something I should be aware of ?

A. Yes, the unit's accuracy is 1% of the full scale viscosity range in use therefore the higher the torque percentage the better the accuracy
B. Yes, the unit's torque percentage indication must be in the middle of the scale, around 50% where the unit is most accurate
C. No, the viscosity is measured in centipoises therefore I should keep an eye on the cps indication and not worry    about % torque

16. What is the shear rate a function of?

A. Temperature and fluid's viscosity
B. RPM (spindle rotational speed), spindle geometry and fluid container shape
C. Container shape (geometry) and RPM (spindle rotational speed)

If needed, press to clear all boxes