公开(公告)号：DE2508781A1

公开(公告)日：1975-09-04

申请号：DE2508781

申请日：1975-02-28

Applicant: COULTER ELECTRONICS

Inventor： FIGUEROA DAVID RICHARD ,  DOTY EDWARD NEAL ,  MARINO ANTHONY

IPC: G01N15/12 ,  G06G7/186 ,  H03K3/351 ,  H03K7/06 ,  G01N15/02

Abstract: A speed-up circuit in an apparatus for measuring a dividing particle size of a particulate system operates to give greater weight to the particle size of particles sensed shortly after system initiation as compared to particles sensed a substantial period of time after system initiation. This increases the speed at which the system moves from an initial or reference setting towards the desired particle size above and below which size predetermined fractions of the total mass of the particulate system are respectively included.

公开(公告)号：DE3174563D1

公开(公告)日：1986-06-12

申请号：DE3174563

申请日：1981-08-06

Applicant: COULTER ELECTRONICS

Inventor： KOLBER STEVEN N ,  MARINO ANTHONY ,  KREISELMAN ROBERT LEE

IPC: G01N21/75 ,  G01N21/25 ,  G01N35/02

公开(公告)号：CA1159277A

公开(公告)日：1983-12-27

申请号：CA382631

申请日：1981-07-28

Applicant: COULTER ELECTRONICS

Inventor： KOLBER STEVEN N ,  MARINO ANTHONY ,  KREISELMAN ROBERT L

IPC: G01N21/75 ,  G01N21/25 ,  G01N35/02 ,  G01N21/05

Abstract: OPTICAL TIMING AND ANALOG-TO-DIGITAL CONVERSION METHOD AND APPARATUS An optical timing and A/D conversion method and apparatus for converting analog signals obtained by movement of a plurality of reaction vessels relative to one or more beams of light from analog to digital signals. The sample signals are obtained each time a reaction vessel passes through a beam of light. The converted digital signals indicate the absorbance of the respective vessels and their contents. Each of the reaction vessels or cuvettes has translucent wall portions providing a radiation path therethrough for the light beams which may be monitored by photometer means in a chemical reaction analyzer. The vessels are repeatedly passed through the light beams of the photometer means as chemical reactions take place therein, the purpose being to monitor the changes in the reaction of the fluids therein by measuring the changes in the absorbance of the vessel and fluids. The sample interval of the analog signal is repeatable for each vessel for each light beam and may be shifted to select the best portion of the analog signal generated as the vessel passes through the particular light beam. The A/D conversion also may eliminate the dark sample or noise error between the light beams and the reaction vessels and may eliminate the variations in the sample signals caused by changes in the rate of relative movement between the beams and vessels and changes in the velocity of the rotating beam.

公开(公告)号：US3894221A

公开(公告)日：1975-07-08

申请号：US44726474

申请日：1974-03-01

Applicant: COULTER ELECTRONICS

Inventor： FIGUEROA DAVID R ,  DOTY EDWARD NEAL ,  MARINO ANTHONY

IPC: G01N15/12 ,  G06G7/186 ,  H03K3/351 ,  H03K7/06 ,  G06G7/12 ,  G01N27/00

CPC classification number: H03K3/351 ,  G01N15/1227 ,  G06G7/1865 ,  H03K7/06

Abstract: A speed-up circuit in an apparatus for measuring a dividing particle size of a particulate system operates to give greater weight to the particle size of particles sensed shortly after system initiation as compared to particles sensed a substantial period of time after system initiation. This increases the speed at which the system moves from an initial or reference setting towards the desired particle size above and below which size predetermined fractions of the total mass of the particulate system are respectively included.

Abstract translation: 用于测量颗粒系统的分散粒度的装置中的加速电路操作，以便在系统启动后不久感测到的颗粒的粒度比在系统启动后相当长的一段时间内感测到的颗粒更大的重量。 这增加了系统从初始或参考设置移动到高于和低于该尺寸的所需颗粒尺寸的速度，该尺寸分别包括颗粒系统的总质量的预定分数。