APMON screens

What do you see on the screens?

Our screens. Real-time, or history. One measurement or a period. It’s all available. One click away. Of course, there is an Excel export function for your own analysis if needed.

Real time screen:

  • 1 to 6 sensors (together or separate) can be selected:
  • Particle deposition events of particles > 15 um per interval.
  • Time scale 12 hour, 24 hours (1 day), 2 days or 7 days.
  • Limits for number of particles or particle deposition rate can be set for the cleanroom at rest, in operation, during cleaning or other periods of interest.



In reports screens the time scale can be set to the time of interest.


Differential particle size distribution

The number of particles and/or area coverage for given particle channels can be selected.

Channels can be selected according to ISO 14644-9:2012 or IEST STD 1246E:2015.


Cumulative particle size distribution

In a cumulative particle size distribution, the total number of particles larger or equal to the particle size on the horizontal axis per dm2 per hour is given.

One or two reference lines with a slope -1 are drawn to show the Particle Deposition Rate Level (Class).


Particle Area Coverage

In the Particle Area Coverage graph the real-time Particle Area Coverage and the increase of the particle area coverage is shown. The slope of the increase determines the Particle Obscuration Rate.


Downloading APMON data

The data of each screen can be downloaded and analysed in an Excel sheets.

  • With this data it is possible to make dedicated graphs and calculations.
  • From this data specific graphs can be made.
  • The data used to make the screens can be downloaded for further analysis


Below an example of a cumulative particle size distribution during operation made from the downloaded data is given:

The height of the tangent determines the Particle Deposition Rate Level PDC.

Find a distributor

Where we are


Would you like to make an appointment or do you have any questions? Please do not hesitate to contact us.
  • Technology of Sense B.V.
    Institutenweg 15
    7521 PH Enschede

    Post address
    P.O. Box 11
    7500 AA Enschede
    The Netherlands
  • Tel: +31 53 737 02 92
  • Fax: +31 53 430 3646
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