Unipulse F805AT-BC, Operation Manual

Page: 41 / 202

5.CALIBRATION
26
5-3. Secondary Calibration
(Calibration using equivalent input) [Weight calibration]
Calibration can be carried out using key input, without actual measurement of the load
cell’s rated output (mV/V) and rated capacity (e.g. the value you want to display).
This method enables calibration without balance weight, and is useful if the instrument
is replaced due to failure, or incorrect span calibration is found.
Note, however, that calibration using equivalent input is a temporary measure. Normal
calibration using real balance weight should be done at an earliest possible occasion.
Steps for equivalent input calibration are as follows:
LOCK(soft) OFF
Min.Scale Division
Capacity
Balance Weight
Equivalent Input
*1
Zero Calibration
LOCK(soft) ON
LOCK(hard) OFF
Excitation Voltage
LOCK(hard) ON
Decimal Point
(Weight)
Toggle the LOCK switch on the rear panel to OFF position
to enable calibration.
Remove software LOCK to enable calibration.
Select load cell excitation voltage (5 or 10V).
Select the position of decimal point.
Specify the maximum capacity of the scale.
Specify the minimum scale division of the scale.
Specify a weight value that exactly corresponds the output
defined in *1
Define the load cell’s rated output (mV/V)
If necessary, enter the initial zero point again.
Disable calibration to prevent unauthorized
modification
Toggle the LOCK switch to ON position to disable
calibration, preventing unauthorized modification.
Calibration