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4 EN
CO₂ air quality data logger BZ30
Automatic baseline calibration
The expected CO2 fresh air value is about400ppm (0.04%vol)
nowadays. The device assumes this value to be the lowest limit
value (baseline).
A special algorithm continuously monitors the lowest CO2 value
detected by the sensor over a pre-configured time interval for
several days. The algorithm slowly corrects any long-term drift
detected compared to the expected CO2 fresh air value of
400ppm (or 0.04%vol).
If the device is used indoors as intended, the carbon dioxide
content will drop almost to the level of the outdoor air in the
course of a week.
By recording the values over a period of 8days and then
comparing the lowest value to the 400pm point, the device
determines whether or not it needs to adjust the zero point.
The algorithm makes use of the fact that the CO2 content in
buildings and rooms regularly stabilizes at a minimum for a
certain period of time when they are not occupied. In rooms that
are continuously occupied or where there is a constantly
increased CO2 concentration (e.g. in greenhouses), the principle
of automatic balancing therefore does not work.
Device depiction
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8
12
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9
14
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17
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DC:6V/1A
No. Designation
1 Main display
2 USB interface
3 Date indication
4 Time indication
5 Power adapter input
6ESC button
7MAXMIN button
8 button
9 button
10 ALARM button
11 Relative humidity indication
12 Temperature indication
13 Battery compartment
14 button (switch-on/ switch-off)
15 / REC button
16 °C/°F button
17 Clock button
Main display
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21
20
19
28
18
27
26
25
23
24
29
No. Designation
18 Measured CO2value
19 Unit measured CO2value (parts per million)
20 USB interface indication
21 Alarm activated indication
22 Feel-good indication: poor air quality
23 Feel-good indication: average air quality
24 Feel-good indication: good air quality
25 REC indication (measured value detection enabled)
26 HOLD indication (freezing displayed values)
27 MIN indication (display of minimum values)
28 CO2 indication (display of CO2 value)
29 MAX indication (display of maximum values)
4


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Trotec BZ30 User Manual - Dutch - 13 pages

Trotec BZ30 Quick start guide - All languages - 7 pages


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