Pressure Systems 9022 Uživatelský manuál stáhnout pdf (Strana 125)

Pressure Systems, Inc. NetScanner™ System (9016, 9021, & 9022) User’s Manual

www.PressureSystems.com

4 - 15

4.5.2 Calibration Procedure

The calibration procedures may be summarized as follows:

1. Set all 9021/9022 channels for the desired gain (1, 20, 45, or 90).

(9022 temperature voltage input gain is fixed at gain = 1)

2. Apply a known upscale or full scale voltage to the 9021/9022.

3. Measure the applied voltage through the 9021/9022.

4. Calculate the 9021/9022 measurement error as a ratio of applied voltage.

5. Adjust the current reference network coefficient by the observed measurement error ratio.

6. Store the new coefficients to non-volatile 9021/9022 memory.

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Pressure Systems 9022 Uživatelský manuál Strana 125