Troubleshooting; Further Information; Calibration; Reference Substances And Viscosities - Pce Instruments Pce-Rvi 7 Bedienungsanleitung

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Troubleshooting

Problem
The viscometer does not work
The instrument does not show "zero" without any
fluids
Viscosity speed is unstable and inaccurate
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Further information

9.1

Calibration

The viscometer comes factory-calibrated and with a calibration certificate.
We recommend checking the accuracy of the viscometer on a regular basis by using optional calibration
oils.
For the verification, we recommend using the R3 rotor and a calibration standard of 1,000 mPa s. Perform
at least 5 measurements and compare the reading to the viscosity of the calibration oil.
Note: Keep in mind that the viscosity is greatly influenced by the temperature. Therefore, you should
perform the verification under the specified conditions of the calibration oil.
9.2

Reference substances and viscosities

Substance
Motor oil SAE 10
Olive oil
Coatings (airbrushed)
Yoghurt
Sugar solution 70 %
Lubricating oil
Concentrated juice
Inks
Honey
Nanocellulose (common additive)
Toothpaste
Manual
Possible solution
Check the batteries
Use the auto zero function
Check the rheological characteristics of the fluid
Perform a calibration check by using calibration
standards
Check if the rotor disk rotates steadily
Check if the temperature of the sample is stable
Approx. viscosity (mPas)
65
84
100
150
400
50 – 1,000
1,500
550 – 2,200
10,000
8,000 – 10,000
100,000
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