6105
6105
6105
6105 Belt
Belt
Belt
Belt Feeder
Feeder
Feeder
Feeder integrator
integrator
integrator
integrator ---
---
---
--- User
User
User
User ’
’
’
’ s
s
s
s Guide
Guide
Guide
Guide ---
---
---
---
38
5.3.3.3
5.3.3.3
5.3.3.3
5.3.3.3 Calculation
Calculation
Calculation
Calculation of
of
of
of Simulated
Simulated
Simulated
Simulated Constant
Constant
Constant
Constant
T he Simulated C onst ant must be calculated by a proper method depending on the selected calibration
mode.
1) For electronic calibration mode, the calculation formula is
Equivalent weight =
( )
1
1
2
1
..
2
S
R
R
LCS
kg
K
+
⎛⎞
⎜⎟ •
⎜⎟
⎝⎠
I n which: L.C.S —— Load cell capacity （ kg ）
K —— Load cell sensitivity （ mv/V ）
RS —— Resistor used in electronic calibration (Ohms)
R1 —— Load cell input resistor (Ohms)
Take the following conditions for example:
L.C.S=200kg
K=0.003V/V
RS=100000 Ω
R1=350 Ω
Then Equivalent weight =
1
2100000
1
350
200
20.003
×
+
⎛⎞
•
⎜⎟
×
⎝⎠
=58.23kg
Equivalent weight on unit length =
1
2
1
cos
dkg
dD ϕ
××
（ kg/m ）
I n which kg —— Equivalent weight
ϕ
—— Angle between the scale on the conveyor and the horizontal plane
d1 —— Distance from trunnion pivot centerline to load cell centerline (mm)
d2 —— Distance from trunnion pivot centerline to weigh idler centerline (mm)
D —— Measuring section length (m)
Take the following conditions for example:
kg=58.23kg
ϕ
=15o
d1=812.8mm
d2=609.6mm
D=3m
Then Equivalent Weight =
58.23812.81
0.966609.63
××
=26.79kg/m
The Simulated C onst ant = Equivalent weight on unit length X Test length
= Equivalent weight on unit length X (Belt full length X revolutions)
= 26.79kg/m X (100m X 25 revs = 26790kg = 26.79t
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