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1. WO1997049979 - APPARATUS AND METHOD FOR MEASURING GASES USING A HEATED GAS PROBE AND CLOSELY COUPLED MEASUREMENT CHAMBER

Publication Number WO/1997/049979
Publication Date 31.12.1997
International Application No. PCT/US1997/010883
International Filing Date 23.06.1997
Chapter 2 Demand Filed 23.01.1998
IPC
G01N 1/22 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1Sampling; Preparing specimens for investigation
02Devices for withdrawing samples
22in the gaseous state
G01N 1/24 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1Sampling; Preparing specimens for investigation
02Devices for withdrawing samples
22in the gaseous state
24Suction devices
G01N 21/03 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
01Arrangements or apparatus for facilitating the optical investigation
03Cuvette constructions
CPC
G01N 1/2258
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1Sampling; Preparing specimens for investigation
02Devices for withdrawing samples
22in the gaseous state
2247Sampling from a flowing stream of gas
2258in a stack or chimney
G01N 1/24
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1Sampling; Preparing specimens for investigation
02Devices for withdrawing samples
22in the gaseous state
24Suction devices
G01N 2001/2261
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1Sampling; Preparing specimens for investigation
02Devices for withdrawing samples
22in the gaseous state
2247Sampling from a flowing stream of gas
2258in a stack or chimney
2261preventing condensation (heating lines)
G01N 2021/158
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
01Arrangements or apparatus for facilitating the optical investigation
15Preventing contamination of the components of the optical system or obstruction of the light path
158Eliminating condensation
G01N 2021/8578
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
84Systems specially adapted for particular applications
85Investigating moving fluids or granular solids
8578Gaseous flow
G01N 21/031
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
01Arrangements or apparatus for facilitating the optical investigation
03Cuvette constructions
031Multipass arrangements
Applicants
  • AMETEK (CANADA), INC. [CA]/[CA] (AllExceptUS)
  • FRISH, Michael, B. [US]/[CA] (UsOnly)
  • STAUDT, James, E. [US]/[US] (UsOnly)
  • BARBEN, Ted [US]/[US] (UsOnly)
Inventors
  • FRISH, Michael, B.
  • STAUDT, James, E.
  • BARBEN, Ted
Agents
  • LEWIS, Christopher, R.
Priority Data
60/020,32524.06.1996US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) APPARATUS AND METHOD FOR MEASURING GASES USING A HEATED GAS PROBE AND CLOSELY COUPLED MEASUREMENT CHAMBER
(FR) APPAREIL ET METHODE DE MESURE DE GAZ UTILISANT UNE SONDE A GAZ, QUI EST CHAUFFEE, ET UNE CHAMBRE DE MESURE COUPLEE A PROXIMITE
Abstract
(EN)
An apparatus comprising an extraction probe and measurement chamber measures gas concentrations directly at the gas extraction site without diluting the sampled gases, while keeping the gas heated to a temperature above 500 °F. The probe is insertable into a stream of a high temperature gas composition and includes a tip section (17) for receiving an extracted sample and a heated extraction section (18). The tip section (17) includes a filter (16) for removing particles from the sample. The heated measurement chamber (15) is coupled to the proximal end of the probe for receiving the extracted sample from the heated extraction section (18). The heated measurement chamber (15) includes a measurement device for measuring concentrations of gases within the sample. The measurement device can comprise an athermal optical multipass cell (e.g., a Herriot cell).
(FR)
Les concentrations de gaz sont mesurées directement sur le site d'extraction de gaz par un appareil comprenant une sonde d'extraction et une chambre de mesure; il n'est pas nécessaire de diluer les gaz échantillonnés. Le gaz demeure chauffé à une température supérieure à 500°F. La sonde peut être insérée dans un flux constitué d'une composition de gaz à température élevée et inclut une partie terminale (17) servant à recevoir l'échantillon extrait et une partie (18) d'extraction, qui est chauffée. La partie terminale (17) inclut un filtre (16) servant à enlever les particules de l'échantillon. La chambre (15) de mesure, qui est chauffée, est couplée à l'extrémité proximale de la sonde et sert à recevoir l'échantillon extrait, qui provient de la partie d'extraction chauffée (18). La chambre (15) de mesure chauffée inclut un dispositif de mesure qui permet de mesurer les concentrations de gaz à l'intérieur de l'échantillon. Le dispositif de mesure peut comprendre une cellule optique athermique multipassages (p.ex., une cellule de Herriot).
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