公开(公告)号：US3716460A

公开(公告)日：1973-02-13

申请号：US3716460D

申请日：1971-06-21

Applicant: BETZ LABORATORIES

Inventor： WEISSTUCH A ,  SCHELL C ,  DRYDEN P

IPC: G01N17/02 ,  G01N27/26

CPC classification number: G01N17/02

Abstract: A THREE ELECTRODE CORROSION RATE METER INCLUDING A POTENTIOSTAT FOR PROVIDING A CORROSION RATE CURRENT WHEREIN A CAPACITOR IS USED TO MEASURE, STORE AND PROGRAM TO THE POTENTIOSTAT THE POTENTIAL DIFFERENCE BETWEEN THE TEST AND REFERENCE ELECTRODES.

公开(公告)号：US3757210A

公开(公告)日：1973-09-04

申请号：US3757210D

申请日：1972-03-09

Applicant: BETZ LABORATORIES

Inventor： HANSEN G ,  DRYDEN P

IPC: G01B7/02 ,  G01F23/26 ,  G01N15/04 ,  G01N27/22 ,  G01R27/02

CPC classification number: G01N27/223 ,  G01B7/085 ,  G01F23/266

Abstract: To determine the amount of deposition taking place in an aqueous solution which deposits scale or other deposits on the vessels in which it is used, a measurement electrode is placed in the aqueous solution so that it also is subject to deposition. A symmetrical wave electrical signal is impressed between the electrode and the body of the vessel containing the aqueous solution. An output signal is generated which is modified by the dielectric deposit on the electrode and is measured to determine the variation in capacitance between the electrode and aqueous system, thereby providing an indication of the magnitude of the deposit on the electrode.