E+E Elektronik EE895 User Manual page 15

The measured data is available as a 16 bit integer and is expressed in SI units:
Measurand
1)
CO average, pc
2
T
p
2)
CO average, npc
2
1)
CO raw, pc
2
2)
CO raw, npc
2
1) pc ... pressure compensated
2) npc ... not pressure compensated
*) Example: 2 575 means 25.75 °C
**) Example: 10 130 means 1 013 mbar
Tab. 7 Data availability from the EE895 Miniature Sensor Module
Example for reading all measurands (7-bit address shifted):
Request [Hex]: S BC 00 P
Slave address Register
Start
7-bit shifted pointer
S BC
Response [Hex]: S BD 03 B0 0A B7 8D 00 26 70 P
Slave address
Start
7-bit shifted high byte
S BD
*) Reserved for future use
Conversion:
Measurand
CO
2
T
p
Tab. 8 Interpretation of data from the response
Register pointer
0x00
0x02
0x06
0x08
0x0A
0x0C
Stop
00 P
CO CO T
2 2
low byte high byte
03 B0 0A
Response [Hex]
0x03B0
0x0AB7
0x2670
Unit
ppm
°C
mbar
ppm
ppm
ppm
T res.*) res.*)
low byte high byte low byte
B7 80 00
Response [Dec]
944
2743
9840
Miniature Sensor Module for CO
User Manual EE895
Scale
1:1
)
1:100 *
)
1:10 **
1:1
1:1
1:1
EE895
p
p
Stop
low byte
high byte
26 70 P
Value
944 ppm
27.43 °C
984.0 mbar
, Temperature and Barometric Pressure | 15
2