Table of Contents
Advertisement
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
0x06
1) Register address starts from 0
Tab. 15 Command single shot measurement
EE895 detailed status
Function code
0x03
1) Register address starts from 0
Tab. 16
Status details
4.4.3
CO
Parameter Settings
2
The CO
parameter settings are non-volatile since they are stored in the flash memory.
2
Function code Register address
0x1450
0x06
0x1451
0x1452
1) Register address starts from 0
Tab. 17 CO
parameter settings
2
*) The EE895 features an exponential moving average filter which to a certain degree suppresses the
influence of short-term CO
and affects the response time of the EE895. A higher filter coefficient leads to smoother output data
and to longer response time, see figure Fig. 14. Fig. 15 shows the number of samples required to reach
63% or 90% of a CO
User Manual EE895 Miniature Sensor Module for CO
Register address
[Hex]
1)
0x1FA
Register address
[Hex]
1)
0x258
[Hex] Description
1)
CO
CO
CO
variations onto the output CO
2
step as function of the filter coefficient.
2
, T and p
2
Note
[Bit 0]: Measurement Trigger
0 = don't care
1 = Start new measurement cycle
[Bit 1..15]
reserved (must be written as 0)
Note
[Bit 0]:
CO
measurement too high
2
[Bit 1]:
CO
measurement too low
2
[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)
measuring interval
2
*
)
filter coefficient
2
customer offset
2
data. The filter coefficient is user selectable
2
Unit
Note
16 bit integer unsigned
Scale 1:10. Example: 150 = 15 seconds
s
Range 100...36 000
Default 15 s
16 bit integer unsigned
-
Range 1...20
Default: 4
16 bit integer signed
ppm
Range -32 786...32 785
Default: 0 ppm
17
Advertisement
Table of Contents
