Environnement MP101M, Technical Manual

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Duplication prohibited
MP101M
Environnement
S.A
1–13
APRIL 2014
1.2. CHARACTERISTICS
1.2.1. TECHNICAL CHARACTERISTICS
Measurement principle : Cyclic measurement by Beta rays gauge
Type of measurement and units : – Density deposited in µg/cm
2
– Concentration in µg/m
3
Units of flow : l/mn, m
3
/h
Units of volume : litres, m
3
, Nm
3
, Sm
3
(at 20°C and 25°C)
Form of results on concentration – Cyclic
measurements : – Periodic
– Average – Floating average
Geiger-Müller counting time : Programmable from 10 to 200 s
Scan periods : 10 mn, 1/4 - 1/2 - 1 - 2 - 3 - 4 – 6 - 12 – 24 – 48 hours
Measurement cycles : 1 - 2 - 3 – 4 - 6 - 12 - 24 - 48 - 72 - 96 hours
Measurement threshold : Depends on periods, cycles and flow rates selected
for 24-hour cycle and flow rate of 1 m
3
/h: 0.5 µg/m
3
Noise (

with Tc = 200 s) : 3 µg/cm
2
on one period of 2 h (PM10).
Minimum detectable limit : 6 µg/cm
2
on one period of 2h (PM10)
(2

with Tc = 200 s)
Beta source : Carbone 14 radioelement,
half-life of radioelement

5730 ans
Gauge adjustment : Automatic on each cycle change
Calibration : By reference gauge