On-site calibration device and method for nonlinearity correctio

Details On-site calibration device and method for nonlinearity correctio On-site calibration device and method for nonlinearity correctio

1994-07-15

1996-01-02

Williams, Hezron E.

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

G01F 2500

Patent

active

054798124

ABSTRACT:
A method and apparatus for providing calibrated and linearized flow sensors for VAV systems with the sensor corrected for device/electronic/drift/and field air turbulence characteristics using factory calibrated flow or pressure sensors with output modified by a transfer function incorporated into a lookup table for each sensor. This allows low power processors to handle the adjustment onsite. Further adjustment is made onsite with reference to actual flow and turbulence effects.

REFERENCES:
patent: 4253156 (1981-02-01), Lisle et al.
patent: 4949578 (1990-08-01), Harpster
patent: 5235525 (1993-08-01), Bybee
patent: 5277196 (1994-01-01), Honkinson et al.

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