公开(公告)号：US3681577A

公开(公告)日：1972-08-01

申请号：US3681577D

申请日：1970-10-30

Applicant: TECHNICON INSTR

Inventor： GASIUNAS DONATAS V

IPC: A61B5/145 ,  G01D18/00 ,  G01N21/27 ,  G01N21/31 ,  H03M1/00 ,  G06F15/46

CPC classification number: H03M1/00 ,  G01D18/002 ,  G01N21/274 ,  G01N21/3103 ,  H03M1/1009

Abstract: New and improved apparatus are provided for the automatic calibration of automatic, multiple channel sample analysis means and comprise level set means to automatically control the level of the analysis means analog output signals and maintain the latter within the same general operating range, zero set means to automatically determine the background signal level for each analysis channel and subtract the same from the analysis channel output signal, attendant the conversion thereof to digital form, and calibration means to vary the scale factor involved in said signal conversion in accordance with the operating characteristics of each of said analysis channels.