Example: Calculate the error budget for a 350Ω , 100mV load cell with a common mode voltage of 2.5V using a gain of 22.28.
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| 200∝ | V + 500∝ | V |
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From Equation 15: V | OS | = |
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| 22.28 | = | 2449 ppm | ||
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| 100mV |
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From Equation 16: I OS | = | 350Ω | ⋅ | 2nA | = 7 ppm |
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| 100mV |
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From Equation 17: Gain Error = | 3500 ppm |
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From Equation 18: CMR Error = |
| 4 ppm ⋅ | 2.5V | = 100 ppm |
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| 100mV |
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From Equation 19: Gain Nonlinearity = 50 ppm |
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From Equation 20: 0.1Hz | 3000nV |
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| 100mV |
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Total Unadjusted Error = 6109ppm |
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Error After Calibration = 53ppm |
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SDAIBB3599Manual |
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph
