Global Patent Index - EP 0756706 A4

EP 0756706 A4 2000-07-12 - CONTINUOUS PARTICULATE EMISSIONS MONITOR CALIBRATOR

Title (en)

CONTINUOUS PARTICULATE EMISSIONS MONITOR CALIBRATOR

Title (de)

KALIBRIERVORRICHTUNG UND MONITOR FÜR KONTINUIERLICHE TEILCHENEMISSION

Title (fr)

DISPOSITIF DE CALIBRAGE ET DE CONTROLE CONTINUS DES EMISSIONS DE MATIERES PARTICULAIRES

Publication

EP 0756706 A4 (EN)

Application

EP 94916559 A

Priority

US 9404492 W

Abstract (en)

[origin: WO9529399A1] A device (10) and method for monitoring particulate (22) flowing through a conduit (20) has a transmitter (16) and a receiver (18) positioned in optical alignment on opposite sides of the conduit (20). A light beam (50) is transmitted across conduit (20) from the transmitter (16) to the receiver (18). Particulate (22) flowing through conduit (20) interrupts light beam (50) causing a signal to be generated from which particulate concentration is determined. A calibrator assembly (40) has a motor (64) adapted to move a filter (100) having a selected percentage opacity within the path of light beam (50). Movement of the filter (100) modulates light beam (50) and a signal corresponding to the concentration associated with the percentage opacity is generated.

IPC 1-7 (main, further and additional classification)

G01N 21/59

IPC 8 full level (invention and additional information)

G01N 21/53 (2006.01); G01N 15/02 (2006.01)

CPC (invention and additional information)

G01N 21/534 (2013.01); G01N 2015/0222 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9529399 A1 19951102; EP 0756706 A1 19970205; EP 0756706 A4 20000712

INPADOC legal status


2002-05-15 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20011103

2000-07-19 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7G 01N 21/59 A, 7G 01N 21/53 B

2000-07-12 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20000531

2000-07-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

1997-02-05 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19961107

1997-02-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE