User Manual EE895
Miniature Sensor Module for CO
2
, Temperature and Barometric Pressure | 19
Measuring status:
indicates when new single shot measurement is possible.
Function
code
Register
address
1)
[HEX]
Note
0x03
0x1F9
[Bit 0]: Data ready. The data are available for read out.
0 = busy, 1 = ready
[Bit 1]: Trigger ready. The EE895 is ready for new measurement cycle.
The minimum time interval between two triggers is 10 s.
0 = trigger not possible
1 = ready for new trigger
[Bit 2..15]
reserved (do not use)
1) Register address starts from 0
Tab. 15
Single shot measurement possible
Measuring trigger:
command for the single shot measurement. For accurate measurement results, there are
recommended six single shot measurements under stable temperature conditions.
Function
code
Register
address
1)
[HEX]
Note
0x06
0x1FA
[Bit 0]: Measurement Trigger
0 = don’t care
1 = Start new measurement cycle
[Bit 1..15]
reserved (must be written as 0)
1) Register address starts from 0
Tab. 16
Command single shot measurement
EE895 detailed status
Function
code
Register
address
1)
[HEX]
Note
0x03
0x258
[Bit 0]:
CO
2
measurement too high
[Bit 1]:
CO
2
measurement too low
[Bit 2]:
T measurement too high
[Bit 3]:
T measurement too low
[Bit 6]:
p measurement too high
[Bit 7]:
p measurement too low
[Bit 8…15]: reserved (do not use)
1) Register address starts from 0
Tab. 17
Status details
