66 FLOWSIC600 · Technical Information · 8010125 V 4.0 · © SICK AG
Flow Calibration
Subject to change without notice
3.2 General notes
The FLOWSIC600 can be calibrated at a certified flow test stand (certified calibration
facility), at ambient or high pressure, to reduce the measurement uncertainty and to
reference it to the national standards.
The FLOWSIC600 offers three different adjustment methods, i.e. to calculate the adjust
factor (also sometimes called "meter factor"):
● flow independent, constant value
● flow dependent using a polynomial approximation
● flow dependent using a linear interpolation of a data table
For all three cases the adjusted flow rate is calculated according to:
Preconditions for calibration
● To use a FLOWSIC600 in fiscal metering applications, a national pattern
approval certificate must exist where required. The FLOWSIC600 must
meet the requirements set out in the pattern approval documents.
● The meter body must be approved for the maximum gas pressure it will be
subjected to.
● The FLOWSIC600 must be installed according to Chapter 4.
● The FLOWSIC600 must be commissioned according to Chapter 5.
For a general description of calibration, please refer to ISO 17089.
Q
adjusted
Q
unadjusted
AF Q=
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