Pressure Systems 9022 - Manual (Page 126)

Pressure Systems, Inc. NetScanner™ System (9016, 9021, & 9022) User’s Manual
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The above process is repeated for each of the four (4) 9021/9022 gain settings (or selected gain
settings as needed for your application).
Calculation of the new reference coefficient is performed as follows:
CoefOld = current reference coefficient value
CoefNew = new/corrected coefficient value
Vapplied = actual applied test voltage
V9021 = reported voltage measured by the 9021/9022
CoefNew = CoefOld * [1 + (Vapplied - V9021) ÷ Vapplied]
Example:
CoefOld: 9021/9022 Gain=1 current reference coefficient is 0.9800
Vapplied: 4.004 VDC is applied to 9021/9022 channel 1 from a precision voltage
source
V9021: 9021/9022 reports 3.965 V measured at channel 1
CoefNew = 0.9800 * [1 + 4.004 - 3.965) ÷ 4.004]
CoefNew = 0.98955