Instron 4400 Series Operator's Manual page 106

Load Calibration
(b) Press the LOAD BAL key. The LOAD BAL LED
(c) Press ENTER. After about 3 seconds, the LOAD
(d) Press LOAD CAL key. The LOAD CAL LED lights,
(e) On the numeric keypad, key in the maximum capac-
(f) Press ENTER
(g) Hang a calibration weight from the tension cell coupling,
Note
5-14
(1) If you are using a tension load cell, install a pin or
other device in the coupling of the cell for apply-
ing a calibration weight.
(2) If you are using a compression load cell, set the
cell on its cap on the base of the load frame. In-
stall an anvil on the cell coupling.
lights.
BAL LED goes out indicating that the balance func-
tion is completed.
but the Main Panel Display goes blank indicating
that the load cell cannot be identified.
ity of the highest range of the cell in the system of
units in use (S.I., English or metric).
or set a weight on the anvil of a compression cell).
The calibration weight should be equivalent to
no less than 40% of the maximum value of the
highest range to be used of the installed load
cell. Otherwise, the load weighing system may
not be within the specified 1% accuracy.
M10-94400-1