Particle Counting/Sizing

Many pharmaceutical and electronics industrial processes have to be carried out in dust free conditions, a particle counter is essential to monitor the amount of airborne particles.

Light is scattered by the particles and detected by a photomultiplier. The amount of light scattered is proportional to the dust concentration.

The size of particles in powders, sprays, and emulsions is important if they are to be manufactured with the required properties.

Scattered laser light is detected by a photomultiplier and the data analysed. The particle size distribution can be calculated from the results.

Photon Counting Modules

Type

Effective cathode dia. mm

Cathode type

Spectral response range nm

Typical dark counts@ 20°C

Max count rate MHz

Output signal

Outline drawing

Data Sheet

P25PC-16

22

S20

300 to 850

100s-1

100

TTL

P25USB-01

22

S20

300 to 850

100s-1

100

USB

DM0087C

22

S20

280 to 850

50s-1

70

TTL

DM0090C

22

S20

300 to 850

50s-1

70

USB

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