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5. OPERATION
5.1 PREPATATION
Place the instrument on a firm level base. The deadweight tester should be placed on a rugged table which is
rated for at least 140 kg without deforming. The table should be horizontally leveled.
The room or onsite place in which the instrument is placed should have proper founding, no vibrations are
allowed during operation of the deadweight tester as this results in unpredictable errors.
Room temperature needs to be stable between 23 ± 2°C during the time the deadweight tester is used to avoid
uncertainties due to the thermal expansion coefficients of the piston cylinder and adiabatic effects in the
measuring system.
Air movement around the deadweight tester should be avoided.
Check if the bubble level is in the center; if not, level the instrument with the 3 adjustable feet.
5.2 VACUUM CALIBRATION OPERATION
1.
Step 1: Calculate the weight’s vacuum value and related quantities.
