On-line process control monitoring system

Patent · Wed Jan 01 00:00:00 EST 1992

OSTI ID:868394

O'Rourke, Patrick E ^[1]; Van Hare, David R ^[2]; Prather, William S ^[3]

---

1. Martinez, GA
2. Aiken, SC
3. Augusta, GA

An on-line, fiber-optic based apparatus for monitoring the concentration of a chemical substance at a plurality of locations in a chemical processing system comprises a plurality of probes, each of which is at a different location in the system, a light source, optic fibers for carrying light to and from the probes, a multiplexer for switching light from the source from one probe to the next in series, a diode array spectrophotometer for producing a spectrum from the light received from the probes, and a computer programmed to analyze the spectra so produced. The probes allow the light to pass through the chemical substance so that a portion of the light is absorbed before being returned to the multiplexer. A standard and a reference cell are included for data validation and error checking.

• Research Organization: Savannah River Site (SRS), Aiken, SC (United States)
• DOE Contract Number: AC09-89SR18035
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5131746
• OSTI ID: 868394
• Country of Publication: United States
• Language: English

Related Subjects

on-line
process
control
monitoring
fiber-optic
based
apparatus
concentration
chemical
substance
plurality
locations
processing
comprises
probes
location
light
source
optic
fibers
carrying
multiplexer
switching
probe
series
diode
array
spectrophotometer
producing
spectrum
received
computer
programmed
analyze
spectra
produced
allow
pass
portion
absorbed
returned
standard
reference
cell
included
data
validation
error
checking
reference cell
process control
optic fiber
light source
diode array
chemical substance
chemical processing
optic fibers
chemical process
carrying light
based apparatus
optic based
on-line process
/356/