Mipex MIPEX-04, User Manual, Page: 29 / 41

Optosense LLC USER MANUAL
Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR
ESAT.100000.00.02 UM Revision 02 December 12th, 2016 Page 29 of 41
THE SOLE PROPERTY OF OPTOSENSE LLC. ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED.
Table 11. Bits of status
bytes’ description
Bit
number
Status word
compliance
9
Description Recommendations
–
00
Normal mode, static temperature
–
0 10 Sensor is warming up. Do not perform span calibration.
1 50
An abrupt signal change (due to feed-
ing a gas mixture to sensor atmos-
phere) or increased noise on sensor
optical elements.
Do not perform span calibration or zeroing. If
this status longer than for 20 minutes at sta-
ble conditions, replace sensor.
2 30
One of the signal values is lower than it
is allowed.
Possible exposure to moisture. Dry sensor.
After drying, if this status lasts longer than
for 20 minutes at stable conditions, replace
sensor.
3
–
reserved Does not contain any significant information.
4 21
Dynamic temperature mode (tempera-
ture changes faster than by 0.6 °C/min).
Do not perform span calibration or zeroing.
5 22
Dynamic temperature mode (tempera-
ture changes faster than by 2 °C/min).
Do not perform span calibration or zeroing.
6 40 Exceeding temperature limits. Check the ambient temperature.
7 90 Firmware failure (flash memory issues). Contact support for details.
8 11 Data request rate is more than 1 Hz.
Do not perform span calibration or zeroing.
Decrease request rate.
9 31
Ratio S
tz0
(see Table 15) exceeds
allowable upper limit.
Possible exposure to moisture. After drying,
if this status lasts longer than for 20 minutes
at stable conditions, perform zeroing (see
Appendix D.1 for procedure description).
10
–
reserved Does not contain any significant information.
11 51 Complex status. Technological failure. Contact support for details.
12
–
reserved Does not contain any significant information.
13
–
reserved Does not contain any significant information.
14
–
reserved Does not contain any significant information.
15
–
reserved Does not contain any significant information.
(4
∨
5) & 9 24
Dynamic temperature mode; zero shifts
to negative value.
Do not perform span calibration or zeroing.
9
Status word is contained in response to command <F> (see Table 15).