Brookfield BF35 Manual do Utilizador descarregar pdf (Página 16)

Brookeld Engineering Labs., Inc. Page 16 Manual No. M13-10000

setting until the thermometer reading becomes stable to within ± 0.2˚F

(0.1˚C) per seconds. Note and record the temperature reading.

6. Once the temperature has stabilized, operate the viscometer at 600 RPM

and then at 300 RPM. Note and record the dial readings to the nearest 0.5

dial unit.

7. Using the temperature-viscosity chart supplied with the calibration uid,

determine the certied viscosity to the nearest 0.5 centipoise.

a. Compare at 300 RPM reading to standard viscosity and record the

deviation plus or minus.

b. Divide the 600 RPM dial reading by 1.98, compare that to standard

viscosity, and record the deviation plus or minus.

8. Deviations exceeding 1.5 dial units are not acceptable. If the deviation

exceeds this tolerance, the viscometer will require adjustments or calibration

by a qualied technician.

9. Record the viscometer serial number, date, and deviation. Mark on the

viscometer the date of calibration and a general indication of the calibration

check status.

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Brookfield BF35 Manual do Utilizador Página 16