AD-4406A
Weighing Indicator
Page
7
3.5.
Verifying Load Cell Output and Input Sensitivity
The input sensitivity of the indicator is 0.15 µV/division or more. Satisfy the following
inequality, when you design a weighing instrument using the indicator and load
cell(s).
Caution
A change in input voltage sensitivity is required to cause a one division
change in the display. Select as large an input sensitivity voltage as
possible so that the weighing interval becomes stable.
Consider the leverage if a lever is used.
Weighing instrument
using one load cell.
Weighing instrument
using multi-load cell
A: Rated capacity of load cell [kg]
B: Rated output [mV/V]
D: Weighing interval [kg]
E: Excitation voltage [mV]
N: Number of load cells
Verification Example
Design:
Load cell
N=1
Rated capacity
A=750 [kg]
Rated output
B=3 [mV/V]
Excitation voltage E=5000 [mV]
Weighing interval
D=0.05 [kg]
Weighing capacity
300 [kg]
Therefore, regard the instrument as a
good design.
3.6.
Installing an Option Board
Caution
Do not remove any screws other than described below.
This is the procedure for the interface (OP-03, OP-04, OP-05, OP-07 and OP-08).
Step 1 Remove the batteries or AC adapter from the indicator.
Step 2 Remove two screws from the rear blank panel.
Step 3 Remove the rear blank panel.
Step 4 Align the option board with both board guides and insert the board. Then the
connector between the main board and the option board will connect properly. If
the option board panel will not close completely, retry step 4 to insert the option
board correctly.
Step 5 Secure the option board panel using two screws.
3.7.
Attaching the Display Stand (OP-11)
Caution
Do not remove any screws other than described below.
Step 1 Remove the batteries or AC adapter from the indicator.
Step 2 Secure the stand to both slide-rails with the bolts provided.
3. Installation and Precautions
A
D
B
E
15
.
0
N
A
D
B
E
15
.
0
15
.
0
1
750
05
.
0
3
5000
