Transmission On Overpass Threshold; Important - ADEUNIS Sigfox BREATH PM1 Guide Utilisateur

Sigfox BREATH - Guide utilisateur / User guide version V1.0.0

2.3.2 Transmission on overpass threshold

The product allows the detection of a threshold for TVOC and PM :
The product sends an alarm if a threshold is overpassed or if the measure turn back to normal.
FR
EN
Value <
No
(threshold -
hysteresis)
Yes
Deactivation alarm
Standby
PM & TVOC
measure
Yes
Alarm acti-
vated
?
No
Value >
No
high thresh-
old
Yes
Alarm activation
Send 0x6E frame
Example:
Register Encoding Value
S301 Decimal 0
S330 Decimal 0
S340 Decimal 1
S341 Decimal 50
S342 Decimal 5
S350 Decimal 3
S351 Decimal 25
S352 Decimal 2
S360 Decimal 0
In this example:
• The product send an alarm if:
• the PM10 value measured is higher than 50 µg/m3
• and/or PM2.5 value measured is higher than 25 µg/m3
• The alarm is deactivated if:
• the PM10 value measured is lower than 45 µg/m3
• and/or PM2.5 value measured is lower than 23 µg/m3
NOTE: as indicated it is possible to combined the periodical and the
alarm mode.
IMPORTANT: the product measure the data every seconds, it is then
advised to configure an important hysteresis to avoid the transmission
of too many alarm frames.
Result
Event mode (no periodical
transmission)
No TVOC alarm
Activated alarm for PM10
50 µg/m3 threshold for PM10
5 µg/m3 hysteresis for PM10
Activated alarm and activated
LED for PM2.5
25 µg/m3 threshold for PM2.5
2 µg/m3 hysteresis for PM2.5
No PM1 alarm
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