Sterlco SF1000 Gravimetric Additive Feeder - Manual (Page 35)

35
3. Calibration process
a) Press the key – Maintenance screen is
displayed again
b) Press <1> key – Zero Calibration screen is
displayed
c) Verify that the hopper is completely empty
(see sec. 5.2). During calibration process the
automatic feeling of the hopper is prevented.
d) Wait for stabilization of IC parameter - the sign becomes dark
and press <ENT>,to begin Offset calibration
"Please Wait" screen is displayed (remaining
time is displayed), showing the calculated "IC"
(Internal counting) Offset Factor.
If the "IC" is too low ( should be ≥200) – an
alarm "Cal Error Offset Too Low" is displayed
Reasons could be:

The Load cell Protection devised has not
been released (see Appendix A)

The Load cell is defective (replace it)

The controller is defective (consult your superior)
e) After a few seconds (If the "IC" is O.K.) –
"GAIN Calibration" screen is displayed
f) Press
g) Enter or modify the Test Weight value
h) Press to make the new value valid
i) Enter a standard Calibration test weight, in the range of 1,000 - 2,500g., into the
hopper
j) Wait for stabilization of IC parameter (the sign becomes dark), and then press
to start GAIN calibration.
k) "Please Wait" screen is displayed again
(remaining time is indicated)