LS SERIES SERVICE MANUAL
ISSUE 4.0 LOAD MEASURING SYSTEM 2
LLV = Factor * Load Resolution Or LLV = (FSD * Factor) / FSD Counts
Where: -
the Factor is: -
400 for a class/grade 0.5 system (0.5% accuracy) (Not for ASTM E4)
200 for a class/grade 1 system (1% accuracy)
100 for a class/grade 2 system (2% accuracy)
the Load Resolution is: -
the smallest change of load that can be measured on the digital display.
FSD is: -
Load capacity of the loadcell
The FSD Counts is: -
104860 (effectively an 18-bit ADC)
Therefore, a YLC loadcell may be verified and used down to 1% of its maximum load value for
a class 0.5 system. If a 1% system is acceptable, then the loadcell may be used down to 0.5%
of its maximum load.
A table of scale intervals and usable loads is given below.
LOADCELL
VALUE
SCALE
INTERVALS
SPECIFIED LOAD RANGE
FOR CLASS/GRADE 0.5
5N 0.00005N
0.00004 lbf
0.05N to 5N
0.01 lbf to 1 lbf
10N 0.0001N
0.0009 lbf
0.1N to 10N
0.02 lbf to 2 lbf
20N 0.0002N
0.0015 lbf
0.2N to 20N
0.045 lbf to 4.5 lbf
50N 0.0005N
0.0004 lbf
0.5N to 50N
0.1 lbf to 10 lbf
100N 0.001N
0.0009 lbf
1N to 100N
0.2 lbf to 20 lbf
250N 0.0025N
0.002 lbf
2.5N to 250N
0.5 lbf to 50 lbf
500N 0.005N
0.004 lbf
5N to 500N
1 lbf to 100 lbf
1000N 0.01N
0.009 lbf
10N to 1000N
2 lbf to 200 lbf
2500N 0.025N
0.02 lbf
25N to 2500N
5 lbf to 500 lbf
5kN 0.05N
0.04 lbf
50N to 5000N
10 lbf to 1000 lbf
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