公开(公告)号：US3513310A

公开(公告)日：1970-05-19

申请号：US3513310D

申请日：1967-03-10

Applicant: INDUSTRIAL NUCLEONICS CORP

Inventor： CHOPE HENRY R ,  GRIFFITH JAMES L ,  SPITZ DAVID A ,  DEWEY REX W ,  TROUTMAN PAUL H

IPC: G01G9/00 ,  G01N23/16 ,  G01T1/16

CPC classification number: G01N23/16 ,  G01G9/005

公开(公告)号：US3611408A

公开(公告)日：1971-10-05

申请号：US3611408D

申请日：1969-04-07

Applicant: INDUSTRIAL NUCLEONICS CORP

Inventor： SHOEMAKER DAVID J ,  DEWEY REX W ,  GRIFFITH JAMES L ,  TROUTMAN PAUL H ,  WOLF FRANKLIN A

IPC: G01R17/00 ,  G01D7/00

CPC classification number: G01R17/00

Abstract: Disclosed herein is a radiation gauge equipped with a strip chart recorder for measuring the properties of moving materials. The recorder has a multiplicity of scales with selectively illuminated scale numerals, a measuring pen and pointer, and a specification target marking pen and pointer. The gauge includes a digital setup arrangement which receives decimal input numbers, indicative of the specification target value for the material to be measured and its composition, either from decimally numbered dials on the operator''s control panel, or from some other input device. Digital logic circuits responsive to the input numbers automatically select the proper scale to be used and illuminate the proper scale numbers. The logic circuits use both the specification target numbers and the composition numbers to automatically and digitally select the center scale and span settings which properly calibrate the gauge for the material to be measured. The logic circuits further use these input numbers to control a digital to analog converter servomechanism which drives the specification target pen and pointer. The operation of this converter is automatically sequenced to mark successively on the moving recorder chart lines whose positions identify the scale used, the material composition measured and the specification target value. The final position of the target pen and pointer determines the set point for an automatic controller for the process machine which produces the measured material.