Digital Weighing Indicator
SI 4100
G
TGXZGTG
4-2-3. Formula to plan the precise weighing system
This “SI 4100” weighing controller’s Max. input sensitivity is
0.2
ࠂ
ࠂ
/ Digit
.
And for precise weighing system, the following formula must be satisfied.
Caution
: “Input sensitivity” means Min. output voltage variation of weighing part to change 1digit.
So, please do not make large input voltage to make reliable weighing system.
Single Load cell use
E
ค
B
ค
D
A : Load cell capacity(kg)
B : Load cell Voltage(mV)
D : Digit
E : affirmation Voltage of Load cell
N : Number of Load cell
0.2
ࠂ
≤
A
Plural Load cells use
E
ค
B
ค
D
0.2
ࠂ
≤
A
ค
N
Example1.)
Number of Load cell : 1pcs
Load cell capacity : 500kg
Load cell Related output : 2mV/V
Division : 0.05kg
Affirmation Voltage of Load cell : 5,000mV
Max. Capacity of Weighing System : 300kg
Then, estimation result for this weighing system with formula,
5000
ค
2
ค
0.05
= 1 ≥ 0.2
ࠂ
The calculated value is larger than 0.2
ࠂ
,
so this system has no problem.
500
Example2.)
Number of Load cell : 4pcs
Load cell capacity : 500kg
Load cell Voltage : 2mV/V
Digit : 0.10kg
Affirmation Voltage of Load cell : 5,000mV
Max. Capacity of Weighing System : 1,000kg
Then, estimation result for this weighing system with formula,
5000
ค
2
ค
0.10
= 0.5 ≥ 0.2
ࠂ
The calculated value is larger than 0.2
ࠂ
,
so this system has no problem.
500
ค
4
According to “Resolution” or “Capacity”, it
ଖ
might not be calibrated like calculation.
Cautions
!
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