User Guide

Copyright HK Instruments 2021 www.hkinstruments. User guide version 1.0 2021
Page 8
Information about the measurements
Measurement Text in the Siro user
interface
Descripon Unit
T (Temperature) Celsius Temperature ⁰C
Fahrenheit Temperature ⁰F
rH (Relave humidity) Humidity Relave humidity %rH
CO
2
(Carbon dioxide) CO2 Carbon dioxide concentraon ppm
VOC (Volale Organic
Compounds)*
TVOC ppm Total concentraon of organic volale compounds ppm
TVOC ug/m3 Total concentraon of organic volale compounds µg/m3
CO2 EQ Organic volale compounds value converted into CO
2
equivalent ppm
IAQ Indoor air quality index, based on TVOC µg/m3 concentraon, see Table 4 1-5,
emocon
PM (Parculate Maer) PM2.5 hour 1-hour mean of parculate maer concentraon for parculates with
diameter under 2.5 µm
µg/m3
PM10 hour 1-hour mean of parculate maer concentraon for parculates with
diameter under 10 µm
µg/m3
PM2.5 day 24-hour mean of parculate maer concentraon for parculates with
diameter under 2.5 µm
µg/m3
PM10 day 24-hour mean of parculate maer concentraon for parculates with
diameter under 10 µm
µg/m3
PM1 Momentary value of parculate maer concentraon for parculates with
diameter under 1 µm
µg/m3
PM2.5 Momentary value of parculate maer concentraon for parculates with
diameter under 2.5 µm
µg/m3
PM10 Momentary value of parculate maer concentraon for parculates with
diameter under 10 µm
µg/m3
IAQ Indoor air quality index, based on hourly average of PM2.5, see Table 5 1-5,
emocon
TVOC IAQ
IAQ level TVOC [µg/m3] Air quality
1 <300 Very good
2 300 – 1 000 Good
3 1 000 – 3 000 Moderate
4 3 000 – 10 000 Bad
5 >10 000 Very bad
PM IAQ
IAQ level
PM2.5
1h avg.
[µg/m3]
Air quality
1 <25 Very good
2 26 - 37 Good
3 38-50 Moderate
4 51-75 Bad
5 >75 Very bad
Based on the German Environment Agency (UBA)
reasearch.
Based on the World Health Organizaon (WHO) research
and hourly average of PM2.5 concentraon.
Table 3 - Addional informaon about the measurements
Table 4 - TVOC levels Table 5 - PM levels
*VOC sensor is tuned for typical IAQ Mix of 22 VOCs as dened by Mølhave et al. (1997)