
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 31 of 41
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Appendix C.2.4. Commands for sensor configuring and span calibrating
Request syntax
USER
mode
OEM
mode
Response description
Command description
AZERO?
no
yes
AZERO ON
or
AZERO OFF
Intended for checking current auto-
zeroing algorithm status.
AZERO OFF
no
yes
AZERO OFF
Turns off the auto-zeroing algorithm.
AZERO ON
no
yes
AZERO ON
Turns on the auto-zeroing algorithm.
CALB AAAA
no
yes
CALB AAAA OK
or
CALB AAAA FAULT
This command is used for gas span
calibration, where
AAAA
is a CGM
concentration value in % vol. × 100.
For example,
AAAA
= 0198 corre-
sponds to 1.98 % vol. See Appendix
D.1 for detailed procedure descrip-
tion.
CALB1 XXXXX
no
yes
CALB1 XXXXX OK
or
CALB1 XXXXX FAULT
Writes scale coefficient for sensor
calibration range of 0…5 % vol.
XXXXX
is the coefficient value incre-
mented to 10000 (for example: to
write the scale coefficient of 0.009
send <CALB2 00090>). This com-
mand can be used to recalibrate sen-
sor if scale coefficient is known. The
scale coefficients for different gases
are individual for each sensor. To
achieve cross-coefficients contact
support.
CALB2 YYYYY
no
yes
CALB2 YYYYY OK
or
CALB2 YYYYY FAULT
Writes scale coefficient for sensor
calibration range of 5…100 % vol.
YYYYY
is the coefficient value incre-
mented to 10000 (for example: to
store the scale coefficient of 0.01
send <CALB2 00100>). This com-
mand can be used to recalibrate sen-
sor if scale coefficient is known. The
scale coefficients for different gases
are individual for each sensor. To
achieve cross-coefficients contact
support.
CALB3 ZZZZZ
no
yes
CALB3 ZZZZZ OK
or
CALB3 ZZZZZ FAULT
Writes scale coefficient Conc3 for the
whole
sensor
calibration
range
(0…100% vol.).
ZZZZZ
is the coeffi-
cient value incremented to 10000 (for
example: to store the scale coeffi-
cient of 0.7 send <CALB3 07000>).
This command can be used to recali-
brate sensor if scale coefficient is
known. The scale coefficients for
different gases are individual for each
sensor. To achieve cross-coefficients
contact support.