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User Manual MAS-100 Regulus en.docx, Version: 4.0
13.1. MANUAL CALIBRATION CHECK
PROCEDURE
1) Perform the following steps in a clean and draft-free place, with all instruments placed
on a stable base.
2) Remove the perforated lid.
If the air sampler features an Easy-Clean-Base:
– Place a MAS-100 Family Calibration Disk or a Petri dish inside the sampling head.
3) Check the lower edge of the perforated lid visually
to ensure that there are no notches or unevenness.
This could lead to a leak between the perforated lid
and the base.
Damaged perforated lids must be replaced.
4) Place the anemometer on the perforated lid of the air sampler.
5) Remount the perforated lid.
6) Start the anemometer by pressing the ON/OFF
button.
The anemometer is in mass flow mode, showing
SLPM on the display.
7) Start up the air sampler (green switch on back side of CU).
8) Ensure that the Delay function is deactivated.
9) Select on the CU the sampling head that needs to be calibrated.
10) Start the sampling.
11) Anemometer reading:
– Allow the anemometer 40 seconds to settle prior taking readings.
– Take 3 consecutive readings from the anemometer.
– Note these 3 flow values: F
1
, F
2
, F
3
.
– Calculate the mean flow value: F
m
= (F
1
+ F
2
+ F
3
)/3
12) The calibration is passed if F
m
is inside the range of 100 SLPM ±2.5 % (97.5 - 102.5).
The air sampler must be re-adjusted according chapter 13.2 if the calibration result is
outside the specified range.
13) Above procedure must be repeated for subsequent sampling heads.
14) If used, remove the MAS-100 Family Calibration Disk or the Petri dish.
15) End of process.
Base
Lid
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