Environnement MP101M, Техническое руководство

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Duplication prohibited
MP101M
Environnement
S.A
1–3
APRIL 2014
1.1. GENERAL
1.1.1. PRESENTATION (FIGURE 1–1)
The MP101M system is used to measure suspended particulate matter in the ambient air. Sampled air
can also be monitored continuously for possible natural radioactivity, with programmed alarm in the
event of a threshold overshoot.
The system is available in the form of an indoor cabinet for installation in a closed room, or an
outdoor, heated and ventilated enclosure. This monitor can operate separately or be included into
supervision and warning networks.
The MP101M is a particles measuring device using Beta gauge. The suspended particles are
gathered by sampling a defined volume of air on a glass fiber filter. The filter is automatically unrolled
between the Beta source and a Geiger-Müller counter (GM) according to defined sequences.
The difference in the radiation counting before and after gathering of the particles represents the
measurement of the mass on the filter. Sampling is carried out with a vacuum pump through a
sampling head connected to the top of the analyzer.
The MP101M provides many advantages, due to its technical design:

flexibility in use due to the multitasks interactive software,

presence of an upgradeable ARM7 board.
The Carbon 14 (
14
C) radioelement contained in the source has low-intensity and a long half-life of
about 5730 years.
The filter ribbon used allows for a high number of sampling events (1200).
By the high-reliability of its components and its ease of use, the MP101M requires very limited
maintenance.