Particle counter verification method

Details Particle counter verification method Particle counter verification method

1997-05-19

1998-05-05

Raevis, Robert

Measuring and testing

Instrument proving or calibrating

Gas or liquid analyzer

356243, G01N 1502

Patent

active

057476675

ABSTRACT:
A method is described for rapid, simple and economical verification of the accuracy of the determination of an on-line particle counter without disconnecting it from a stream of liquid being tested. The method involves injecting a known volume of a liquid containing a known number and size of particles into the stream of liquid upstream from the detector. The number of particles displayed prior to injection of the known volume of liquid is compared with (1) the number of particles displayed after injection, and (2) the known number of particles which have been injected. No other modifications of the equipment is required, and only low volumes of test standard are used.

REFERENCES:
patent: 3412037 (1968-11-01), Gochman et al.
patent: 4434647 (1984-03-01), Whitcomb et al.
patent: 4890481 (1990-01-01), Ezawa et al.

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