Druck DPI 530, User Manual

Page: 31 / 45

K162 Issue No. 2
DPI 530 User Manual 25
4 Calibration
The instrument is supplied with a calibration certificate. For the
instrument to stay accurate it is recommended that the instrument is
checked every 12 months.
The use of a Class A compensated deadweight tester is recommended.
The following procedures should be carried out in a controlled
environment by qualified personnel.
If the accuracy of the instrument is not within the specification, carry
out a calibration adjustment procedure.
A qualified person must have attended a product training course given
by the manufacturer or appointed agent and successfully completed the
training course on this equipment.
The manufacturer offers a comprehensive and, if required,
UKAS accredited calibration service.
Calibration Check
A calibration check should be carried out at chosen intervals. The
readings of the instrument should be compared with a pressure
standard and, after any adjustments for accuracy (traced to National
Standards), the differences recorded. The adjusted differences can
then be compared with the required accuracy for the instrument. If
necessary a calibration adjustment can be carried out.
The recommended procedure is to check at increasing and then
decreasing intervals of 0, 20, 40, 60, 80 and 100% of full-scale.