Load Weighing System Balance - Instron 4400 Series Operator's Manual

EXAMPLE:
If a 2518-204 cell is installed and is to be used over its
full capacity in English units (200 lb), then the calibra-
tion weight should be no less than 80 lb.
(h) On the numeric keypad, key in the actual value of
the calibration weight in the system of units in use
(S.I., English or metric).
(i) Press ENTER. After about 6 seconds, the LOAD CAL
LED goes out indicating that calibration is completed.
(j) Remove calibration weight and fixture from the load
cell. If you are calibrating a compression cell, install
it in the crosshead.
(k) Press the LOAD BAL key. The LOAD BAL LED
lights.
(l) Press ENTER. After about 3 seconds, the LOAD
BAL LED goes out indicating that the balance func-
tion is completed.

Load Weighing System Balance

You may install grips and fixtures before or after calibra-
tion, depending upon the type of load cell installed.
Also, you may change grips or fixtures between tests, in
which case system calibration does not have to be re-
peated. However, it is necessary to balance out the tare
weight of grips and fixtures whenever these are added or
changed and the system has been calibrated.
Note
Always balance a calibrated load weighing
system whenever grips and fixtures are added
or changed.
Load Calibration
5-15