公开(公告)号：EP0115902A2

公开(公告)日：1984-08-15

申请号：EP84300008.4

申请日：1984-01-03

Applicant: MILTON ROY CO.

Inventor： Casey, William T.

IPC: G01N21/85 ,  G01N21/27

CPC classification number: F21V19/04 ,  G01J1/1626 ,  G01J2001/161 ,  G01N21/0317 ,  G01N21/05 ,  G01N21/255 ,  G01N21/85

Abstract: A spectrophotometer is provided with a deuterium lamp (20) which emits a beam (32) comprising radiation of a plurality of frequencies. The beam (32) passes through a filter (34) for selecting the wavelength of the light desired to be incident onto a sample and then onto a beam splitting plate (26) which diverts a relatively small fraction of the beam (28) to a first reference photocell (30). The remaining portion of the beam (32) is incident directly on a sample tube (54). The sample tube (54) may be so designed that its transparent walls form a lens focussing the beam (32) on the sample to be tested. The beam (32) then passes through the further wall of the sample tube (54) and is detected by a second testing photocell (42), the output of which may be compared to the output of the reference photocell (30) to provide a signal indicative of the relative amplitude of the testing beam. The reference photocell (30) may be used to insure that the intensity of the beam (32) incident on the beam splitter (26) remains constant over time so that values output by the testing photocell (42) may be comparable to measurements taken at a later time, without the use of a reference sample for calibration purposes. The sample cell (54) is constructed so as to allow the use of the instrument in on-line applications in high pressure systems.

Abstract translation: 分光光度计设置有发射包括多个频率的辐射的光束（32）的氘灯（20）。 光束（32）通过滤光器（34），用于选择期望入射到样品上的光的波长，然后通过光束分离板（26）将光束（28）的相对小部分转移到 第一参考光电池（30）。 梁（32）的剩余部分直接入射在样品管（54）上。 样品管（54）可以被设计成使得其透明壁形成聚焦于待测试样品上的束（32）的透镜。 光束（32）然后通过样品管（54）的另一壁，并由第二测试光电池（42）检测，其输出可与参考光电管（30）的输出进行比较，以提供 指示测试光束的相对幅度的信号。 参考光电池（30）可以用于确保入射到分束器（26）上的光束（32）的强度随时间保持恒定，使得由测试光电池（42）输出的值可以与在 稍后的时间，不使用参考样品进行校准。 样品池（54）被构造成允许在高压系统中使用仪器进行在线应用。

公开(公告)号：EP0115902A3

公开(公告)日：1985-06-26

申请号：EP84300008

申请日：1984-01-03

Applicant: MILTON ROY CO.

Inventor： Casey, William T.

IPC: G01N21/85 ,  G01N21/27

CPC classification number: F21V19/04 ,  G01J1/1626 ,  G01J2001/161 ,  G01N21/0317 ,  G01N21/05 ,  G01N21/255 ,  G01N21/85

Abstract: A spectrophotometer is provided with a deuterium lamp (20) which emits a beam (32) comprising radiation of a plurality of frequencies. The beam (32) passes through a filter (34) for selecting the wavelength of the light desired to be incident onto a sample and then onto a beam splitting plate (26) which diverts a relatively small fraction of the beam (28) to a first reference photocell (30). The remaining portion of the beam (32) is incident directly on a sample tube (54). The sample tube (54) may be so designed that its transparent walls form a lens focussing the beam (32) on the sample to be tested. The beam (32) then passes through the further wall of the sample tube (54) and is detected by a second testing photocell (42), the output of which may be compared to the output of the reference photocell (30) to provide a signal indicative of the relative amplitude of the testing beam. The reference photocell (30) may be used to insure that the intensity of the beam (32) incident on the beam splitter (26) remains constant over time so that values output by the testing photocell (42) may be comparable to measurements taken at a later time, without the use of a reference sample for calibration purposes. The sample cell (54) is constructed so as to allow the use of the instrument in on-line applications in high pressure systems.