Brookfield KU-1 Viscometer Manual do Utilizador descarregar pdf (Página 10)

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Appendix A - KU-1 and KU-1Q Calibration

Each KU-1 or KU-1Q Viscometer is supplied with a Certificate of Calibration. The viscometers are

certified traceable to NIST calibration fluids which are available from Brookfield. The following fluids

are recommended for use in performing a calibration check.

NIST Viscosity Standard Viscosity (KU) T (°C)

KU64 64 25

KU79 79 25

KU84 84 25

KU95 95 25

KU115 115 25

Select two of the above fluids to run a calibration test on your KU-1 or KU-1Q viscometer. Method

of test is similar to the procedure outlined in Section II, Operation. The frequency of calibration

should be based on your company’s standard operating procedure for test and calibration of

instruments. Be careful to control temperature as close to 25°C as possible. The Viscosity

Standards are very temperature sensitive.

The full scale measurement range for both the KU-1 and KU-1Q viscometer is 140 Krebs units

(KU). The viscometer is guaranteed to be accurate within ± 2.0% of 140 KU or 2.8 KU. The

calibration fluid is guaranteed to be accurate within ± 1.0% of the viscosity value stated on the label.

In the case of KU64, this would be .64KU. Therefore, any measurement using this particular NIST

calibration fluid should provide a viscosity reading within ± 3.44 KU (2.8 KU + .64 KU = 3.44 KU

or 4 KU if you round up) of the fluid's viscosity stated on the label.

Appendix B - References

The KU-1 and KU-1Q Viscometer arecompatible with:

ASTM D 562 Standard Test Method for CONSISTENCY OF PAINTS USING THE

STORMER VISCOMETER

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