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USER MANUAL 

SMALL-SIZE INFRARED GAS SENSOR MIPEX-02-3-RX-1.1 G 

 

ESAT.100200.02.02 UM 

 

September 23, 2021 

Page 30 of 41 

THE SOLE PROPERTY OF SIA MIPEX. ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF SIA MIPEX IS PROHIBITED. 

 

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 OK 

Turns off the auto-zeroing algorithm. 

AZERO ON

 

no 

yes 

AZERO ON OK 

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 for the whole 
sensor  calibration  range  (0…100% 
vol.). 

ZZZZZ

  is  the  coefficient  value 

incremented to 10000 (for example: to 
store the scale coefficient of 0.7 send 
<CALB3 07000>). This command can 
be used to recalibrate sensor if scale 
coefficient  is  known.  The  scale 
coefficients  for  different  gases  are 
individual for each sensor. To achieve 
cross-coefficients contact support. 

 

Summary of Contents for 02-3-RX-1.1 G

Page 1: ...www mipex tech com ESAT 100200 02 02 UM September 23 2021 Page 1 of 41 SMALL SIZE INFRARED GAS SENSOR MIPEX 02 3 RX 1 1 G Non Ex version USER MANUAL ESAT 100200 02 02 UM...

Page 2: ...PERMISSION OF SIA MIPEX IS PROHIBITED INFORMATION CONTAINED IN THIS DOCUMENT IS THE SOLE PROPERTY OF SIA MIPEX ANY REPRODUCTION IN PARTS OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF SIA MIPEX IS P...

Page 3: ...ortation 15 7 Warranty 16 8 Contacts 17 Appendix A Sensor types and characteristics 18 Appendix B Connection diagram 23 Appendix C UART communication protocol 24 Appendix C 1 General information 24 Ap...

Page 4: ...sor SIA MIPEX reserves the right to make changes to this manual 1 1 List of abbreviations ADC Analog to Digital Converter LED Light Emitting Diode CGM Control Gas Mixture NDIR Non Dispersive Infra Red...

Page 5: ...tc see Appendix A Sensor is a smart integrated system and includes mirror optical system photodiode and LED signal amplifiers microcontroller current driver of the infrared LED UART interface signal g...

Page 6: ...5 60 Temperature range C 10 40 20 50 Overall dimensions mm 20 3 16 6 without pins Pins length mm 4 6 Warm up time sec 120 Weight g 17 2 Housing material Stainless steel Life time expectancy3 not less...

Page 7: ...on whichever is greater Response time T90 without dust filter sec 30 Response time T90 when dust filter provided by SIA MIPEX is installed see Appendix E sec 60 Table 4 Electrical specifications and s...

Page 8: ...sensor reflecting cover or on sensor side surface 2 MPa on sensor upper edge 100 MPa Sensor updates information about concentration every 1 28 0 065 second Sending any command more often than one time...

Page 9: ...thout power supply after transportation as well as after dust filter is applied see Appendix D 1 It is required to perform span calibration at least once in 30 months 5 1 Preparation If sensor has bee...

Page 10: ...tion Pulse repetition period is 80 20 ms depends on ambient temperature During operation maximum surge current is 17 mA for 20 microseconds see Fig 2 Average current consumption is not more than 330 A...

Page 11: ...100200 02 02 UM September 23 2021 Page 11 of 41 THE SOLE PROPERTY OF SIA MIPEX ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF SIA MIPEX IS PROHIBITED Fig 2 Typical current consumption waveform Fig...

Page 12: ...02 02 UM September 23 2021 Page 12 of 41 THE SOLE PROPERTY OF SIA MIPEX ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF SIA MIPEX IS PROHIBITED Fig 4 Typical barrier voltage drop waveform 3 3 V in...

Page 13: ...command via UART interface for DATAE2 command description see Appendix C 2 1 for status bytes description and recommendations see Table 12 Sensor span calibration and zeroing should be performed next...

Page 14: ...nnection diagram of multiple sensors to single UART line Resistors are calculated as follows 1 Determine the quantity of sensors N that should be connected to single UART line 2 Determine forward volt...

Page 15: ...Transportation can be done by all means of transportation in covered vehicles as well as in a heated pressurized plane compartments in accordance with the rules of cargoes transportation actual for th...

Page 16: ...corrosion oxidation ingression of any foreign objects materials liquids insects if sensor was damaged by using connection circuit that does not comply with requirements stated in this UM if damage is...

Page 17: ...1 Page 17 of 41 THE SOLE PROPERTY OF SIA MIPEX ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF SIA MIPEX IS PROHIBITED 8 CONTACTS MIPEX TECHNOLOGY SIA MIPEX 2B Valkas iela Daugavpils Latvia 5417 Te...

Page 18: ...ON OF SIA MIPEX IS PROHIBITED APPENDIX A SENSOR TYPES AND CHARACTERISTICS See Table 5 for details See Table 6 for details MIPEX 02 B RX D 1 G Interface 1 UART 4 pins Housing type 1 sensor housing made...

Page 19: ...IA MIPEX ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF SIA MIPEX IS PROHIBITED Table 5 Metrological properties of sensor RX code Part number Target gas Calibration gas Meas range vol Temp range C...

Page 20: ...5 of readings whichever is greater within the range of 20 25 C 0 1 vol or 40 of readings whichever is greater at 100 kPa tested at 80 kPa 100 kPa 120 kPa 0 1 vol or 15 of readings whichever is greater...

Page 21: ...R MIPEX 02 3 RX 1 1 G ESAT 100200 02 02 UM September 23 2021 Page 21 of 41 THE SOLE PROPERTY OF SIA MIPEX ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF SIA MIPEX IS PROHIBITED Fig 7 MIPEX 02 3 RX...

Page 22: ...2 3 RX 1 1 G ESAT 100200 02 02 UM September 23 2021 Page 22 of 41 THE SOLE PROPERTY OF SIA MIPEX ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF SIA MIPEX IS PROHIBITED Table 7 Sensor pinout Pin Pu...

Page 23: ...0 02 02 UM September 23 2021 Page 23 of 41 THE SOLE PROPERTY OF SIA MIPEX ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF SIA MIPEX IS PROHIBITED APPENDIX B CONNECTION DIAGRAM Fig 8 Connection diag...

Page 24: ...st responses command ends with carriage return symbol hex 0D words and or values in a response on most commands are separated by space symbol hex 20 or in some cases by tabulation hex 09 all symbols i...

Page 25: ...requesting measured data and diagnosing see Appendix C 2 1 2 commands for controlling operating mode see Appendix C 2 2 3 commands for requesting factory settings and properties see Appendix C 2 3 4...

Page 26: ...CII format tabulation symbol 5 bytes in ASCII format and 0D symbol Returns sensor readings of scaled concentration C1 current ambient temperature in Celsius degrees and status word see Table 16 CFS ye...

Page 27: ...ata C1 hex 0D Table 10 Structure of response to DATAE command Command DATAE hex 44 41 54 41 45 0D Byte number 1 2 3 4 5 Byte data7 C1H C1L StatusByte CRC hex 0D Table 11 Structure of response to DATAE...

Page 28: ...ature mode temperature changes faster than by 0 6 C min Do not perform span calibration or zeroing 5 5 22 Dynamic temperature mode temperature changes faster than by 2 C min Do not perform span calibr...

Page 29: ...r switching com mands level from USER to OEM XXXX stands for old password and YYYY stands for new one New password should contain only digits 0 9 in ASCII format UART yes yes USER or OEM Returns activ...

Page 30: ...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 f...

Page 31: ...check sensor readings In case if sensor does not comply to its metrological specifications perform span calibration see Appendix D 1 SETC XXXXX yes yes SETC XXXXX OK or SETC XXXXX FAULT Intended for d...

Page 32: ...symbol Returns a number contained in cell XX 00 09 of sensor memory user section USERDATAXX YYYYY no yes USERDATAXX YYYYY OK Writes a number YYYYY 00000 99999 to cell XX 00 09 of sensor memory user se...

Page 33: ...SCII format 0D symbol sensor s hexadeci mal net address in range 00 FF and 0D symbol Returns sensor s net address AABB no yes Three bytes in ASCII format sensor s new hexadecimal net address and 0D sy...

Page 34: ...being carried out avoid excessive pressure on sensor housing 98 humidity pressure of flowing gas less than 99 kPa and more than 103 kPa temperature changes faster than by 0 6 C min dust ingress if dus...

Page 35: ...A ensure the following conditions 4 1 entered concentration value must not deviate from the current readings of more than 20 times and also must not be less than 11 C 20 C C 0 05 C 10 4 2 CGM must con...

Page 36: ...MIPEX IS PROHIBITED Table 14 CGMs used for CO2 span calibration CGM number according to text Components composition Content of carbon dioxide vol Permissible deviation limits vol Limits of permissibl...

Page 37: ...example of procedure for temperature range of 40 60 C 1 Fill sensor atmosphere with nitrogen 2 Power on the sensor 3 1 minute after send ZERO0 command This command erases previously defined temperatur...

Page 38: ...ic membrane Vladipor MFFC TC 6 55 221 1413 2004 On the filter backside there is an adhesive layer 3M Double Linered Laminating Adhesive 7952 in hatched areas in Fig 12 Fig 12 Top filter dimensions Per...

Page 39: ...support Contacting support send log file with periodic responses to command F which is intended exclusively for detailed diagnostics It returns comprehensive information on sensor readings and its st...

Page 40: ...IA MIPEX IS PROHIBITED Table 15 Structure of response to F command Command F hex 46 0D response Byte number Byte data 1 Hex 0E 2 6 T 7 Hex 09 8 12 St 13 Hex 09 14 18 Us 19 Hex 09 20 24 Uref 25 Hex 09...

Page 41: ...re on optical elements Dry sensor After drying if this status lasts longer than for 20 minutes at stable conditions replace sensor 31 8 Zero shifts to negative value Possibility of condensed moisture...

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