Temperature and Materials

Additional considerations for inserts, cups, filter caps and reference spheres.

       Note that all reference sphere volumes are certified at 20 °C.

       All spheres are made of Tungsten Carbide (WC), EXCEPT for the 51 cm3 reference used with the 100 cm3 nominal unit, which is made of Stainless Steel (SS).

       All inserts and sample cups are Aluminum (Al), unless otherwise specified.

       There is an optional 10cm3 stainless steel sample cup available for certain applications.

       All filter caps are Stainless Steel (SS).

       The Coefficient of Thermal Expansion (CTE) is embedded in the software for these materials and automatically adjusts volumes for verification, calibration, cup measurements and insert measurements.

       If the cup or insert is measured at 20 °C, the cup or insert can be used at other temperatures without need to measure at the analysis temperature.

       If using the stainless steel cap with the aluminum cup, the cup plus cap volume would need to be measured at the analysis temperature since they are of different materials.

       If verifying volume using cups and reference spheres using a sample method at a temperature other than 20 °C, the reference volume needs to be manually corrected and compared to the measured value. The calculations are in the AccuPyc III Operator's Manual.