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 41 of 41
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Table 16. Status word values description
Status
word
Priority
level
10
Description
Recommendations
00
12 (lowest)
Normal operating mode, temperature
is static.
10
2
Sensor is warming up.
Do not perform span calibration.
11
3
Data request rate is more than 1 Hz.
Do not perform span calibration or
zeroing. Decrease request frequency.
21
10
Dynamic temperature mode
(temperature changes faster than by
0.6 °C/min).
Do not perform span calibration or
zeroing.
22
9
Dynamic temperature mode
(temperature changes faster than by 2
°C/min).
Do not perform span calibration or
zeroing.
24
7
Dynamic temperature mode; zero
shifts to negative value.
Do not perform span calibration or
zeroing.
30
4
One of the signal values (U
s
or U
ref
) is
lower than it is allowed
A possibility of exposure to moisture.
Dry sensor. After drying, if this status
lasts longer than for 20 minutes at
stable conditions, replace sensor.
31
8
The ratio S
tz0
exceeds allowable
upper limit.
A possibility of exposure to moisture.
Dry sensor. After drying, if this status
lasts longer than for 20 minutes at
stable conditions, perform zeroing
(see Appendix D.1 for procedure
description).
40
6
Exceeding temperature limits.
Check the ambient temperature.
50
11
An abrupt signal change (due to
feeding a gas mixture to sensor
atmosphere) or increased noise on
sensor optical elements.
Do not perform span calibration or
zeroing.
If this status lasts longer than for 20
minutes at stable conditions, replace
sensor.
51
5
Complex status. Technological failure. Contact support for details
90
1 (highest)
Firmware failure (flash memory
issues).
Contact support for details
NOTE: If any status word value
except “00” and “21” appears, metrological properties of sensor
are not provided.
10
Sensor condition is characterized by set of status word parameters. <F> command returns only one
status word value in accordance with priority. To view all parameter values, use command <DATAE2>.