Royco photozone stream counter

The HIAC Royco Instrument Corporation manufactures a whole range of photozone stream counters [34, 35]. The optical system used in the different instruments depends on the information requirements of the particular study. For example,... 

Figure 6.9. Royco corporation manufactures several different photozone stream counters which exploit different types of light scattering, a) Top view of the optical arrangement of the Model 203 photozone stream counter, b) Optical arrangement Model 218 photozone stream counter. c) Optical arrangement Model 345 photozone stream counter.

Optical counters have been widely used to monitor cleanroom technology and particles in oil. Instmments manufactured by Royco Inc. (Menlo Park, California) are available for studying aerosols and particles in Hquids. The HIAC counter (HIAC Instmments, Monte Claire, California) is a widely used stream counter for particles in fluid. One of the more recently developed optical counters is available from Particle Sizing Systems (Santa Barbara, California). The configuration of one of the widely used counters, the Climet counter, is shown in Figure 16. A general review of photozone counters is available (3). 

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