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C
ALIBRATION
R
7 CALIBRATION
Your Viscometer was calibrated at the factory before shipment and a calibration certificate was
included in the box. Additional calibration checks at regular intervals over the life of the Viscometer
are a requirement of quality management procedures, e.g. ISO 9000, and other similar standards.
Calibration checks may be carried out by the user of the Viscometer (see instructions below),
however if the calibration of the Viscometer is found to need adjustment, please contact Elcometer
or your local Elcometer supplier.
Checking Viscometer calibration
The following calibration checking procedure requires the use of the Adaptor for low viscosity
samples - See “Spare parts and accessories” on page 28.
Use of this adaptor helps to eliminate fluctuations in the temperature of the sample and variations
due to differences in the sample container.
It is recommended that calibrated viscosity oil is used for checking calibration. Oils between
100 mPa•s to 125 mPa•s for version R and 5 mPa•s for version L should be adequate for the
calibration procedure.
1. Fit the adaptor for low viscosity samples and fill with the recommended volume of calibration
oil - See “Adaptor for low viscosity samples” on page 16.
2. Switch on and start the Viscometer; begin with viscosity readings at the highest speed
permitted by the combination of speed/spindle (taking into account the nominal viscosity and
temperature values of the calibration oil).
3. Once the desired sample temperature has been reached, check the viscosity reading on the
display. If the reading is identical to the nominal viscosity of the calibration oil, your Viscometer
is calibrated correctly.
8 MAINTENANCE
The Elcometer Rotary Viscometer is designed to give many years reliable service under normal
operating and storage conditions.
The Elcometer Rotary Viscometer does not contain any internal user-serviceable components. In
the unlikely event of a fault, the instrument should be returned to your local Elcometer supplier or
directly to Elcometer.
Details of Elcometer offices around the world are given on the outside cover of these Operating
Instructions. Alternatively visit the Elcometer website, www.elcometer.com
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