A&D FC-5000Si, Инструкция по эксплуатации

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Specifications for Remote Scale
The scale has the ability of driving up to 4 load cells (350
Ω
) in a remote scale
(platform). Set for the capacity range 0.5kg to 5,000kg (1 lb to 10,000 lb).
‰
The scale has the ability of driving up to 4 load cells (350
Ω
) in a remote scale
(platform).
‰
Capacity range for the remote scale is 0.5kg to 5,000kg (1 lb to 10,000 lb).
‰
Minimum output at zero point is 1mV.
‰
Maximum output at full load is 14mV.
Excitation Voltage of the scale is 5V.
‰
Cable length should be kept under 5m (16.5 ft.) for higher accuracy.
‰
Pin connection (JM:NJC-207-PF):
The Load Cell and Input Sensitivity
The relationship between load cell and input sensitivity ( X ) for the scale is follows:
‰
Example Load Cell Capacity 100kg “ A ”
Rated Output 3mV/V “ B ”
Min., Division of Display 0.01kg “ D ”
5,000 x x B D
A
“ X ”= µV
‰
When a single Load Cell is used,
the following formula should apply:
‰
System design will be satisfactory if “ X ” is
greater than 0.5µV. In the example above
“ X ” = 1.5µV.
Capacity and Resolution
‰
The resolution of the remote scale is automatically determined during the calibration
procedure. The following is to enable you to calculate the resolution for a given capacity.
1. Decide the capacity value and assign it to “Ws”. Maximum 5 digits.
2. Get the maximum count “Ns” for the capacity. Ignore the decimal point and add “0”
to Ws until it is 5 digits.
3. Calculate: d’=Ns/10,000.
4. Decide the minimum division “d”.
d’=1
Æ
d=1
2
≥
d’>1
Æ
d=2
5
≥
d’>2
Æ
d=5
d’>5
Æ
d=10 This should be changed to d=1, dividing Ns by 10.
5. Now “Ns x d” and the resolution 1/No = d/Ns can be determined.
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