CO2 auto-zero period
Set CO2 auto-zero period
Default auto-zero period, after the factory auto-zeroing, is 192 hours (8 days). During this period the lowest measured CO2 value is accepted as 400ppm and the auto-zero value is obtained automatically. If The period is 0, automatic auto-zero function is disabled, but the obtained or set with command auto-zero value is still used internally.
The command is described in Table 19.
Byte inde
Hex Velue
Meaning
0
2A
The command code.
1
48
Auto-zero period in hours. 0x48 = 72 hours.
Table 19
Example command: 0x2A48 β The server sets CO2 auto-zero period to 72 hours.
Get CO2 auto-zero period
Byte index
Sent request
Received response
0
2B β Command code.
2B β The command code.
1
48 β Auto-zero period in hours. 0x48 = 72 hours.
Table 20
Example command sent from server: 0x2B;
Example command response: 0x2B48 => CO2 auto-zero period is 72 hours.
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