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FLOWSIC600 · Technical Information · 8010125 V 4.0 · © SICK AG
Flow Calibration
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3.3.8
Functional check before flow calibration
Once the test facility is flowing at the initial flow rate, check the performance of the meter.
The performance should be at least 75% on all paths. If the velocity of gas is greater than
30 m/s (100 ft/s), the performance values may be significantly lower.
Check the "Meter Status" window for errors and warnings (
3.3.8.1
Correct meter factor for calibration
If during the calibration the pulse output supplies the readings for the meter under test,
the meter factor must be checked for the maximum output frequency at Qmax and for the
necessary resolution regarding Qmin.
Example:
If Qmin = 20 m
3
/h and the meter factor is set to 10 Imp./m
3
the FLOWSIC600 would
provide only 3 pulses per minute. Apart from the insufficient resolution, it would take too
long, to collect a representative number of pulses (compare
If necessary, the meter factor should be changed:
Open the "Meter calibration" wizard in MEPAFLOW600 CBM (select Tools / Meter
calibration).
Switch the meter to Configuration Mode.
Enter the correct value in the field "Meter factor"
Click "Write to meter".
If a special low frequency pulse rate is required, an alternative meter factor
may be specified which is then used during the air test only (Reg. #7060
"MeterFactorLF").