公开(公告)号：GB2429772B

公开(公告)日：2008-11-12

申请号：GB0620549

申请日：2005-04-19

Applicant: TROJAN TECHN INC

Inventor： KNIGHT DOUGLAS GORDON ,  VERDUN ALEX M W ,  VANDOODEWAARD PETER

IPC: G01J1/42 ,  A61L2/10 ,  A61L2/28 ,  C02F1/32 ,  G01N21/03 ,  G01N21/33 ,  G01N21/59

Abstract: A process for measuring transmittance of a fluid with first and second radiation wavelengths includes (i) positioning a polychromatic radiation source and a polychromatic radiation sensor in a spaced relationship to define a first thickness of fluid; (ii) detecting a first radiation intensity corresponding to the first wavelength at the first thickness; (iii) detecting a second radiation intensity corresponding to the second wavelength at the first thickness; (iv) altering the first thickness to define a second thickness; (v) detecting a third radiation intensity corresponding to the first wavelength at the second thickness; (vi) detecting a fourth radiation intensity corresponding to the second wavelength at the second thickness; and (vii) calculating radiation transmittance of the fluid in the radiation field from the first radiation intensity, the second radiation intensity, the third radiation intensity and the fourth radiation intensity.

公开(公告)号：GB2429772A

公开(公告)日：2007-03-07

申请号：GB0620549

申请日：2005-04-19

Applicant: TROJAN TECHN INC

Inventor： KNIGHT DOUGLAS GORDON ,  VERDUN ALEX M W ,  VANDOODEWAARD PETER

IPC: G01J1/42 ,  A61L2/10 ,  A61L2/28 ,  C02F1/32 ,  G01N21/03 ,  G01N21/33 ,  G01N21/59

Abstract: There is disclosed a process for measuring transmittance of a fluid in a radiation field comprising polychromatic radiation - i.e., radiation at a first wavelength and radiation at a second wavelength different from the first wavelength. The process comprises the steps of: (i) positioning a polychromatic radiation source and a polychromatic radiation sensor element in a spaced relationship to define a first thickness of fluid in the radiation field; (ii) detecting a first . radiation intensity corresponding to radiation at the first wavelength received by the sensor element at the first thickness; (iii) detecting a second radiation intensity corresponding to radiation at the second wavelength received by the sensor element at the first thickness; (iv) altering the first thickness to define a second thickness; (v) detecting a third radiation intensity corresponding to radiation at the first wavelength received by the sensor element at the second thickness; (vi) detecting a fourth radiation intensity corresponding to radiation at the second wavelength received by the sensor element at the second thickness; and (vii) calculating radiation transmittance of the fluid in the radiation field from the first radiation intensity, the second radiation intensity, the third radiation intensity and the fourth radiation intensity. Thus, the present process relates to a novel manner to measure UV transmittance of a fluid in an on-line or random measurement manner.

公开(公告)号：CA2563425A1

公开(公告)日：2005-10-27

申请号：CA2563425

申请日：2005-04-19

Applicant: TROJAN TECHN INC

Inventor： KNIGHT DOUGLAS GORDON ,  VANDOODEWAARD PETER ,  VERDUN ALEX M

IPC: G01N21/59 ,  A61L2/10 ,  A61L2/28 ,  C02F1/32 ,  G01J1/42 ,  G01N21/03 ,  G01N21/33

Abstract: There is disclosed a process for measuring transmittance of a fluid in a radiation field comprising polychromatic radiation - i.e., radiation at a first wavelength and radiation at a second wavelength different from the fir st wavelength. The process comprises the steps of: (i) positioning a polychromatic radiation source and a polychromatic radiation sensor element in a spaced relationship to define a first thickness of fluid in the radiation field; (ii) detecting a first . radiation intensity corresponding to radiati on at the first wavelength received by the sensor element at the first thicknes s; (iii) detecting a second radiation intensity corresponding to radiation at t he second wavelength received by the sensor element at the first thickness; (iv ) altering the first thickness to define a second thickness; (v) detecting a third radiation intensity corresponding to radiation at the first wavelength received by the sensor element at the second thickness; (vi) detecting a fourth radiation intensity corresponding to radiation at the second waveleng th received by the sensor element at the second thickness; and (vii) calculatin g radiation transmittance of the fluid in the radiation field from the first radiation intensity, the second radiation intensity, the third radiation intensity and thefourth radiation intensity. Thus, the present process relates to a novel manner to measure UV transmittance of a fluid in an on-li ne or random measurement manner.