Particulate sampler system flow calibration

Details Particulate sampler system flow calibration Particulate sampler system flow calibration

2006-03-22

2009-10-27

Williams, Hezron (Department: 2856)

Measuring and testing

Instrument proving or calibrating

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

C073S001340, C073S001070, C073S001060

Reexamination Certificate

active

07607335

ABSTRACT:
A particulate sampler system includes a diluted exhaust mass flow controller that receives flow from a dilution mass flow controller and a laminar flow element (LFE). The dilution mass flow controller and LFE are fluidly arranged parallel to one another. A controller communicates with the mass flow controllers and the LFE to determine the flow through these devices, command valves in the mass flow controllers and generate data for determining calibration coefficients and correction factors. The diluted exhaust mass flow controller is calibrated and calibration coefficients are generated using a first to fourth order curve fit. Similarly, initial calibration coefficients are generated for the dilution mass flow controller. The diluted exhaust mass flow controller is set at a desired flow point. The dilution mass flow controller is varied between set points corresponding to different dilution ratios at the common, desired set point. The data obtained is used to determine a correction factor for example, by performing a linear curve fit of the data. The correction factor is applied to the calibration coefficients associated with the mass flow controllers.

REFERENCES:
patent: 6370936 (2002-04-01), Yamagishi et al.
patent: 6553818 (2003-04-01), Blumke et al.

Affiliated with

Also associated with

Rating

Particulate sampler system flow calibration does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Particulate sampler system flow calibration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Particulate sampler system flow calibration will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4114362