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Load Cell Calibration
We calibrate all our iLoad Series capacitive load cells in house using either a deadweight tester (up to 100 lbs) or using a high quality reference load cell that has been calibrated within the last one year and is traceable to NIST standards.
We calibrate each of our capacitive load cells (iLoad Series) using a 9 point calibration at the following load levels (as % of full scale loads):
Capacities up to 500 lb.
25%
50%
75%
100%
75%
50%
25%
0%
Capacities greater than 1000 lb.
12.5%
25%
37.5%
50%
62.5%
75%
87.5%
100%
A typical calibration run looks like this:
Capacity: 100 lb.
| Load | Raw Counts |
| 0 | 5000000 |
| 10 | 5100000 |
| 20 | 5200000 |
| 40 | 5400000 |
| 60 | 5600000 |
| 80 | 5800000 |
| 100 | 6000000 |
| 50 | 5500000 |
| 0 | 5000000 |
We fit cubic best fit curves and compute the load as follows:
Raw Weight = A*Count^3+B*Count^2+C*Count+D
Computed Weight = Raw Weight – Tared Weight
We provide a calibration certificate with each of our shipped sensors showing applied loads vs. computed loads. You can view a sample calibration certificate here.
We recommend that users recalibrate at least once a year and sooner if the sensor seems to be have been overloaded or damaged during use. Loadstar Sensors provides economical recalibration services for your convenience. Please contact one of our sales representatives for help with calibration services.