公开(公告)号：EP0180410B1

公开(公告)日：1992-02-26

申请号：EP85307663.6

申请日：1985-10-24

Applicant: VAF Instruments

Inventor： Pitt, Gillies David ,  Extance, Philip ,  Scott, Brian James ,  Verrels, Michael Victor ,  Hancock, Nicholas

IPC: G01N21/53 ,  G01N33/18

CPC classification number: G01N21/53 ,  G01N21/0332 ,  G01N21/15 ,  G01N21/532 ,  G01N2201/062 ,  G01N2201/126 ,  G01N2201/128

公开(公告)号：EP0180410A3

公开(公告)日：1989-01-11

申请号：EP85307663.6

申请日：1985-10-24

Applicant: VAF Instruments

Inventor： Pitt, Gillies David ,  Extance, Philip ,  Scott, Brian James ,  Verrels, Michael Victor ,  Hancock, Nicholas

IPC: G01N21/53 ,  G01N33/18

CPC classification number: G01N21/53 ,  G01N21/0332 ,  G01N21/15 ,  G01N21/532 ,  G01N2201/062 ,  G01N2201/126 ,  G01N2201/128

Abstract: A power station boiler condensate water monitor employs a light-scatter cell (4) for the detection of oil and/or particulates in the water. In order to determine background scatter levels, provision is made to alternatively pass clean water through the cell (FLUSH). The offset voltages obtained from the detector outputs when clean water is employed are compensated for differences in temperature between the boiler condensate water and the clean water before subtraction from the detector outputs when boiler condensate water is employed. The monitor is capable of detecting oil levels of less than 2 ppm.

公开(公告)号：EP0180410A2

公开(公告)日：1986-05-07

申请号：EP85307663.6

申请日：1985-10-24

Applicant: VAF Instruments

Inventor： Pitt, Gillies David ,  Extance, Philip ,  Scott, Brian James ,  Verrels, Michael Victor ,  Hancock, Nicholas

IPC: G01N21/53 ,  G01N33/18

CPC classification number: G01N21/53 ,  G01N21/0332 ,  G01N21/15 ,  G01N21/532 ,  G01N2201/062 ,  G01N2201/126 ,  G01N2201/128

Abstract: A power station boiler condensate water monitor employs a light-scatter cell (4) for the detection of oil and/or particulates in the water. In order to determine background scatter levels, provision is made to alternatively pass clean water through the cell (FLUSH). The offset voltages obtained from the detector outputs when clean water is employed are compensated for differences in temperature between the boiler condensate water and the clean water before subtraction from the detector outputs when boiler condensate water is employed. The monitor is capable of detecting oil levels of less than 2 ppm.