SMALL-SIZE EXPLOSIVE GAS MEASURING SENSOR
Contents
1. Z NN OPTOSENSE LLC USER MANUAL A e Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X 3 INTRINSIC SAFETY Combined intrinsically safe parameters of sensor circuits are as follows IECEx ATEX Ui 5 0V li 450mA Pi 0 25W Ci 38 8pF Li 0 mH CAN CSA Vmax 5 0V Imax 450mA Pmax 0 25W Ci 38 8pF Li 0 mH It is allowed to connect the sensor only to intrinsically safe circuits with the rated direct current output voltage U0 within the range of not less than 3 V and not more than 5 V with the output power PO not less than 0 02 W and not more than 0 25 W The gas analyzing equipment which is used with MIPEX 02 must meet the requirements of IEC60079 0 IEC60079 11 IEC 60079 14 and have parameters conforming the MIPEX 02 intrinsic safety pointed above File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 8 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED Z NN OPTOSENSE LLC USER MANUAL A e Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X 4 PRECAUTIONS e Inspection and maintenance of the sensor should be carried out by suitably trained personnel in accordance with the applicable code of practice e g EN 60079 17 e Any person who have studied this UM have been briefed on safety precautions when operating electrical equipment intended for operation in2. D 1 3 Manual zeroing in different points of temperature range H zero shift appears in different temperature use ZERO command with following recommendations Procedure is similar to manual zeroing in whole temperature range and consists ZERO command sending in various static temperatures i e after status byte in response of DATAE is 0 There are three ways to make this procedure One point zeroing Send ZERO command in any static temperature That is recommended to take a temperature point close to 23 C Three points zeroing Taking one point at 23 C and two others close to edges of operating temperature range is recommended Multipoint zeroing That is recommend to take one point at 23 C two points at the edges of operating temperature range and some other intermediate points Similar 10 13 C fold interval should be taken between each points Because of MIPEX 02 X II X 1 X temperature range could be divided on 8 interval most time taking but most precise procedure is 9 point zeroing ZERO ZERO ZERO ZERO ZERO ZERO ZERO ZERO ZERO a a 2 6 10 49 Ty Fig 10 Scheme of manual zeroing with ZERO command If the requirements to the sensor error are not fulfilled in accordance with Table 5 the procedure of setting zero and calibration shall be repeated In case of a repeated non compliance of the sensor readings to the value of concentration of CGM No 3 the sensor is subject to replacement and
3. The setting of zero and calibration of the sensor is performed in the course of the primary installation into a gas analyzer as well as annually during preparation to conducting a check In any cases the setting zero should be done before calibration The devices given in Fig 9 and the CGM are used in the course of conducting operations The operations on setting zero and calibration of the sensor shall be carried out by a qualified specialist outside of the explosion hazardous zone at normal conditions Gas adapter Ek A MIPEX 02 CGM an USB cable PC USB converter Fig 9 Typical scheme of MIPEX 02 calibration D 1 Zeroing D 1 1 Autozero Autozeroing is embedded in self diagnostics algorithm of sensor It starts after sensor is powered up Self diagnostics is operating all along during the sensor is on If anyway zero shift is observed manual zeroing procedure is recommended File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 34 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED IN Ge OPTOSENSE LLG USER MANUAL A i Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X D 1 2 Manual zeroing in whole temperature range 1 Fill up the sensor with zero gas 2 Send DATAE and check that status byte in response is 0 3 Send ZERO2 command in ASCII and check that response is ZERO2 OK
4. 24 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED OPTOSENSE LLC ZINN USER MANUAL a 7 Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X Table 6 Sensor operating commands Se SE WO oe A Command name Response Description Response in HEX The command is 16 bit concentration data The Yes Requests of concentration see Table 8 lead byte Conc1H transmitted first low byte Conc1L at the end of response Response in HEX The command X is initiate regular transmitting n ad of gas concentration data to UART Here X is a value in range 0 9 ox NES Penola Teguest ey concen talon ee Table ASCII proportion to standard operating period of the sensor 1 3 sec eg Th is th tration in Vol 100 i 00198 DATA Yes Request concentration readings digits and e response is the concentration in Vo Le response ODh means 1 98 Vol DATAE Yes Request concentration status byte HEX 4 bytes Bytes 1 2 are the concentration data similar to response byte and check sum and ODh 3 is the status byte byte 4 ControlSum EveryByte DATAE y Se See Ge status HEX 6 bytes Bytes 1 2 are the concentration data similar to response 9s OCH SE and ODh bytes 3 4 are the status bytes byte 5 ControlSumEveryByte Request of concentration XXXXX XXXXX YYYYY ZZZZZ separated with space symbol 20h in AS
5. 1 2006 5 2 3 The transceiver of UART interface should meet the requirements of standards IEC 60079 0 IEC 60079 11 Communication parameters of UART transceiver are following HIGH logic level for transmit line TxD is 2 8V HIGH logic level for receive line RxD should be in range between 2 8V and 3 3 V File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 10 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED W ty OPTOSENSE LLC USER MANUAL Co Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X LOW logic level 0 9 V Maximum output current of UART not more than 25 mA MIPEX 02 has pulsing power consumption Maximum current might shortly rise up to 10 mA during 10 ms pulse length Average consumption is less than 1 mA see Fig 8 In case if the sensor sends response for the commands via UART maximum current consumption might rise up to 10 mA for 60 ms Since the power is supplied during 40s the sensor does not return the concentration value the value is being displayed as 1 After that sensor starts to transfer measured values Please note that if the dust filter from sensor s kit was attached then ZERO2 command must be send after warm up time Sensor updates information about concentration approx every 1 3 sec Sending commands more often than 1 time per sec sampling rate over 1Hz is not r
6. 11 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLG IS PROHIBITED Z NN OPTOSENSE LLC USER MANUAL A e Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X 6 STORAGE AND TRANSPORTATION The transportation of the sensors should be performed by all means of transportation in covered transportation vehicles as well as in the heated pressurized plane compartments in accordance with the rules of cargoes transportation effective for the respective type of transportation The sensors in the Manufacturer s package should be kept in the Supplier s and Customer s storages under storage conditions pointed in Table 1 The atmosphere of storage premises should be free from harmful admixtures provoking corrosion File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 12 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED Z NN OPTOSENSE LLC USER MANUAL A E Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X 7 WARRANTY The Manufacturer guarantees compliance of the sensors with specifications and requirements stated in this UM if Customer meets conditions of operation transportation and storage During the warranty period Customer has the right to get replace or repair of all the products that according to its unquestionable valuation are foun
7. 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 36 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED OPTOSENSE LLC USER MANUAL Co Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X Table 12 CGM used for CH4 calibration gas CGM Nos Component Composition Permissible Limits of Number as per according composition of measured deviation permissible State Register to text component limits vol error of or Standard vol qualification designation of LEL vol 1 N2 100 GOST 9392 74 CH No 2 2 50 0 25 0 04 3883 87 3 CH No 4 15 94 0 25 0 04 3883 87 Table 13 CGM used for C3H8 calibration gas CGM Nos Component Composition Permissible Limits of Number as per according composition of measured deviation permissible State Register to text component limits vol error of or Standard vol qualification designation of LEL vol 1 N2 100 GOST 9392 74 CH No 0 85 50 0 05 0 015 5328 90 C3Hg No 1 6 94 0 1 0 05 EM 06 01 648 Table 14 CGM used for CO2 calibration gas CGM Nos Component Composition Permissible Limits of Number as per according composition of measured deviation permissible State Register to text component limits vol error of or Standard vol qualification des
8. MIPEX 2_0000 MIPEX 2_0000 MIPEX 2_0000 MIPEX 2_0000 MIPEX 2_0000 MIPEX 2_0000 MIPEX 2_0000 MIPEX 2_0000 gt CONST lt lt 10000 09829 10454 08035278 00000 001485 00005 00010 00200 01671 00772 01588 00020 00015 00120 00020 00060 0000000000 06900 00500 00800 08948 10000 00412 03400 00100 00200 10002 gt CONST2 lt lt 10000 09829 10454 08035278 00000 001485 00005 00010 00200 01671 00772 01588 00020 00015 00120 00020 00060 0000000000 06900 00500 00800 08948 10000 00412 03400 00100 00200 10002 File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 33 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED we zm OPTOSENSE LLC USER MANUAL OPTOSENSE Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X n p Appendix D Sensor zeroing and calibration Closing gas sampling holes of the sensor impairs response time Do not zeroing under span gas concentration Recommended zero gas is nitrogen or clean air no impurities Always make manual zeroing after sticking or removing the dust filter on the sensor To achieve correct data during the tests be sure there are no e excessive force on sensor housing 100 humidity dewpoint out of specified range of environmental pressure fast temperature change more than 0 6 C min dust if dust filter is not used sensor rate no more than 1Hz
9. Table 9 Status word description Status Status Status word DARE or DAE of Description Recommendation DATAE2 DATAE2 00 Normal mode static temperature 10 Bit 0 Warm up Do not perform calibration 11 Bit 0 Too many UART interruptions Do not perform calibration or zeroing Decrease request frequency 21 Bit 4 Fast temperature change Do not perform calibration or zeroing 22 Bit 5 Sharp temperature change Do not perform calibration or zeroing 24 Bit 4 Bit 1 Fast temperature change Zero Do not perform calibration or zeroing shifts to negative values Low signals level Do not perform calibration or zeroing 30 Bit 2 Measuring accuracy need to be additionally verified once switching on of Bit 2 has been observed Replace the sensor if Bit2 is on constantly gt 20 min Zero shifts to negative values Using of dust filters is recommended to avoid moisture or dust inside sensor In case of moisture ingress unmounts sensor off 31 Bit 1 device then dry it during 4 hours minimum in warm dry location Make zeroing procedure and performance check 40 Bit 6 Out of operation temperature range Check the ambient temperature 50 Bit 1 Abrupt change of signal Do not perform calibration or zeroing Replace sensor if bit1 is on constantly gt 20 min 51 Complex status Contact support for details 90 Bit 7 Firmware corruption Contact support for details ANN Bit 2 Low power mode is on XX status To achieve full compliance to declared specification turn on the
10. dispatching to the Manufacturer D 2 Scaling Scaling procedure should be used for following purpose e Quick switch between readings in vol or LEL e Set up cross coefficients for measuring other hydracarbons gases than calibrated one Cross coefficients can be requested as additional option by ordering Please note that accuracy in this case is lower than specified e There are two scale coefficients for CH4 sensors First is for 0 5 Vol range Second is for 5 100 Vol range File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 35 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED Z NN OPTOSENSE LLC USER MANUAL i Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X e Proceed operations pointed below as only if sensor has 0 100 Vol measuring range or up to 100 Vol indication range Use the following sequence to make scaling 1 Send DATAE and check that status byte in response is 0 2 To setup the first coefficient send CALB1 XXXXX command in ASCII and check that response is CALB1 XXXXX OK Where XXXXxX is scaling coefficient i e 20000 3 To set up the second coefficient send CALB2 YYYYY command in ASCII and check that response is CALB2 YYYYY OK By default scaling coefficients are XXXXX YYYYY 10000 that means of no scaling Do not apply span gas while scaling For example i
11. from packing e Detach a filter from the teflon tape with tweezers e Align the filter to the top surface center with tweezers and then press on it For the Fast response modification perform the same operation on the side surface After the dust filter was attached zeroing procedure must be performed see Appendix D for details File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 38 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED
12. lt aw OPTOSENSE LLC OPTOSENSE a E USER MANUAL Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X mip SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X USER MANUAL ESAT 413347 005 UM TE W E Intertek File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 1 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED S De OPTOSENSE LLC USER MANUAL OPTOSENSE yy Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X THE INFORMATION CONTAINED IN THIS DOCUMENT IS THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION IN PART OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED Document revisions Rev Date Common changes 1 34 16 July 2014 Released version 2 0 27 August 2015 Formatting Typical sensor sensitivity for different hydrocarbons Description of RX code Dust filter specification File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 2 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED Z NN OPTOSENSE LLC USER MANUAL 7 Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X Table of Contents INTRODUCTION EE 4 Te DESCRIPTION eege Eege tone 5 2 TECHNICAL SPECIFICATI
13. oas KARN Lasel MIM SS 316 R E SSC Fast response Metal housing MIM SS 316 RK Plastic Plastic housing LEXAN RESIN 943A H 4 4 3 4 Pins length L 5 75mm Pins length L 4 6 mm 4pins File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 16 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED OPTOSENSE KEE OPTOSENSE LLC Design Department USER MANUAL SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X Tx Communication TxD output Communication RxD input Power supply woe Power supply Fig 1 Sensor pinout Table 3 Individual specifications of the sensor RX code Target Calibration Measurement RX code Temperature eee gas gas range marking range C Application CH4 0 2 5 Vol 00 or CH4 0 5 Vol 10 CH4 CH4 C2H6 0 400 Voi 20 See 40 CO2 CO2 0 1 5 Vol 30 CH4 0 2 5 Vol 01 or CH4 0 5 Vol 11 H4 CH4 C2H SAGARA 0 100 Vol 21 40 60 CH4 0 1 5 Vol 61 or C3H8 C3H8 0 2 5 Vol 71 0 2 5 Vol 02 li CH4 or CH4 0 5 Vol 12 CH4 CH4 C2H6 0 100 Vol 22 20 50 CO2 CO2 0 1 5 Vol 32 CH4 0 1 5 Vol 62 or C3H8 C3H8 0 2 5 Vol 72 Typical sensor sensitivity to other hydrocarb
14. word values similar for normal mode standard mode File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 27 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED ORS N OPTOSENSE LLC USER MANUAL EA Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X C 3 2 Request commands of factory settings and properties The commands shown in Table 10 are used for sensor setup check the factory settings and firmware update There is able to work with up to 256 sensors in one UART line Use prefix XX before any command to send commands to any sensor in one UART line XX is a network hexadecimal address from 00 to FF Table 10 Setting commands Command in Available in M OEM mode USER mode Command name Response Description LOWPWx LOWPWx No Setup power mode OK x 0 normal mode of power consumption HI x 1 low power LOWPW No _ Check the current sensor mode Horw sooner mode EN OEM XXXX WE Change mode from USER to OEM et XXXX is digital password If the password not correct sensor stay in et et ooo mode USER CSS Change mode from OEM to USER PASS XXXX Password chande R XXXX EE EE is old password YYYY is new password By default the YYYY ge YYYYOK password is 0000 DATEZC Eea w D calibration date in format a MM YY pom D MM YY DD Ge YY DD day 1 31 MM month 1 12 YY year
15. 00 99 DATEZC Yes Check calibration date DD o YY RR ae ae el ae a After time out during the calculations not more than 1 sec XXXXX Firmware integrity check calculated CRC OK and calculated checksum for current firmware YYYYY checksum stored in according to CRC16 algorithm XXXXX memory of the sensor In case of malfunction XXXXX and YYYYY YYYYY OK values does not match together Status word indicates 90 value if CRC mismatches Yes Check identifier TYPE SN RX Returns summary info about type code serial number RX code and S SREV firmware version separated with space symbol Turn on negative shift indication in The command activates the possibility to show concentration shift to INDSIG ON No ON l i concentration readings negative values In case of using this command response on INDSIG OFF N Turn off negative shift indication in OFF concentration request is 2 status word 31 or 3 status word 24 in S concentration readings ASCII It is not needed to activate mode after power reset File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 28 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED d r OPTOSENSE LLC USER MANUAL aw Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X ASCII 5 bvte The response includes the sensor type data MIPEX model target gas RT Yes Check the type code TYP
16. 15 Page 6 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED ge n OPTOSENSE ULC USER MANUAL OPTOSENSE WW Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X Supply Voltage Range 3 0 5 0 VDC Fb Output signal digital UART KS Power consumption mW lt 5 Le Warm up time not more min 2 W De p gree of personal protection against electrical shock caused by the sensor meets the requirement of class III GOST 12 2 007 0 Marking and standards compliance Ex ia U Ex ia IIC U acc to FOCT P MOK 60079 0 FOCT P MOK 60079 11 TP TC 012 2011 Ex ia Ma Ex ia IIC Ga acc to IEC60079 0 IEC60079 11 IEC60079 26 55 lt Ta lt 60 C IM 1 111 G Ex ia Ma Ex ia IIC Ga acc to EN60079 0 EN60079 11 EN60079 26 55 lt Tas 60 C RECOGNIZED COMPONENT kb Class I Division 1 Group A B C D c US ES CONFORMS TO UL Std 913 60079 0 60079 11 Intertek CERT TO CANICSA Std C22 2 No 157 92 4004454 z Term operation temperature means the ambient temperature where the sensor can be used safely but the sensor accuracy supported only in temperature range see Table 3 and Table 5 File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 7 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED
17. CII CCS Yes temperature in Celsius degrees and YYYYY XXXXX is gas concentration YYYYY is temperature value in Celsius status word ZZZZZ ZZZZZ is the status byte see Table 9 Request concentration temperature XXXXX XXXXX YYYYY ZZZZZ separated with space symbol 20h in ASCII CFS Yes in Fahrenheit degrees and status YYYYY XXXXX is gas concentration YYYYY is temperature value in word ZZZZZ Fahrenheit ZZZZZ is the status byte R EE EE E XXXXX XXXXX YYYYY ZZZZZ separated with space symbol 20h in ASCII CKS Yes TER a ae Gre YYYYY XXXXX is gas concentration YYYYY is temperature value in Kelvin Be i ZZZZZ ZZZZZ is the status byte CONST No Request of sensor constants The response includes the constants stored in sensor memory and CONST2 N Request of sensor constants from the used for troubleshooting The response format available by request 4 special memory space See chapter C 5 for details Detailed inf i ki F Yes See see Table 7 Response on F command is 5 byte in ASCII separated by 09h condition of the sensor File name ESAT 413347 006 UM v 2 0 docx THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE L Revision 2 0 27 August 2015 Page 25 of 38 LC IS PROHIBITED ge OPTOSENSE LLC USER MANUAL A i Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X Table 7 St
18. E and Sa housing code and pinout code The response format available by request oe the characteristics code ASCII 2 byte 2 SRAL Check the sensor serial number ASCII 8 byte SN and 0Dh Response includes the sensor model and current firmware version For 2 SREV SS Check the firmware version aa example MIPEX 2_ 25 4 History request of firmware The command response is the 10 latest firmware versions Example of SREVH updates response see chapter C 4 Stacked 10 There is ability to save up to 10 digits 0 99999 to flash memory of the digits shows S IS After firmware update from the 25 2 version where this function g is absent all default values are 67294 USERDATA Value from e Check data in the sensor memory 00 to 09 Display the data saved in cell with XX number USERDATA XX YYYYY Save data to the sensor memory YYYYY Save YYYYY value to cell number XX USER or GC CS update SE UOK See chapter C4 for dotais USERDATA Display all data stored in memory File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 29 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED as OPTOSENSE LLC USER MANUAL age Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X C 3 3 Sensor setting and calibration commands The commands shown in Table 11 are used during sensor calibration The procedure and used equi
19. ONS eseu eene Eege 6 3 INTRINSIC EE eech 8 4 PRECAUTIONS eg ee e 9 5 INSTALLATION AND SERVICES 3 ekseege deeg dE 10 6 STORAGE AND TRANSPORTATION sso csecicessccenis sscacecedssasneceatackentivesaceutacsentucoseseutecsawseccents 12 Ta WARRANTY E 13 Be CONT AG KE 14 APPENDIX A SENSOR TYPES AND CHARACTERISTICS cs eececeeeseeeeeeeeeeeeeeseeneeeeeees 15 APPENDIX B CONNECTION DIAGRAM Eet aeieeet deed EES SEENEN EA APPENDIX C UART COMMUNICATION PROTOCOL ececcceeseeseeeeeeeeeeeeeeeeeeeeeeeeeeeees 24 Cd MAGNE NATO eler ee eebe ee 24 G 2s Work MOUGS E 24 GBs EF een elen Ee EE 24 C 3 1 Operating ee 24 C 3 2 Request commands of factory settings and properties ccceeeeeeeeeeteeeeeeeees 28 C 3 3 Sensor setting and calibration Commande AA 30 Kotteng ee E Ee e ER LS Nee ln E 33 APPENDIX D SENSOR ZEROING AND CALIBRATION ccccseeseeeeeseeseeeeeeeeeeeeeeneeneeees 34 BE BT ne DEE 34 Re KENE ue BEE 34 D 1 2 Manual zeroing in whole temperature range ecceceeeeeeeeeeeeeeeeeeteeeeeeeeeeeeeees 35 D 1 3 Manual zeroing in different points of temperature range eceeeeeeeeeeeeeteee 35 BZ WSCA AG RE 35 APPENDIX E DUST FILTERS eech 38 List of abbreviations CGM Control Gas Mixture EMI Electromagnetic Interference LEL Lower Explosive Limit NDIR Non Dispersive Infra Red UART Universal Asynchronous Receiver Transmitter File name ESAT 413347 006
20. TTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED Fee ew OPTOSENSE LLC USER MANUAL lla Ze Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X C 4 Firmware update Firmware update must be proceed with accordance to following description Optosense LLC disclaims all liability for sensor malfunction due to mistakes committed by user during firmware update Firmware version 24 6 is compatible with previous version 24 2 for MIPEX 02 3 X X 1 X CO2 only Firmware version 25 6 is compatible with previous versions 25 2 and 25 4 for MIPEX 02 1 X X 1 X CH4 MIPEX 02 2 X X 1 X C3Hs MIPEX 02 4 X X 1 X CHACH CoHe only The term compatible means that sensor performance as well as protocol commands of previous versions keeps unchanged after finishing of firmware update process To update sensor firmware use the following procedure and commands e Send SREV command and check that current version is able to be updated If firmware version is 25 4 make sure that sensor is in OEM mode by sending UART e Send UPLOAD and receive U_OK response Sensor switched to bootloader e Upload firmware to sensor memory It is necessary to make Erase pages before loading application code Page quantity corresponds to code file size in Kbytes Do not use Mass erase in bootloader it will clear all memory and leads to sensor malfunction e Verify uploaded firmware code Use Read memory command of b
21. UM v 2 0 docx Revision 2 0 27 August 2015 Page 3 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED eg OPTOSENSE LLC USER MANUAL A i Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X INTRODUCTION MIPEX 02 X X X 1 X hereinafter sensor or MIPEX 02 is the gas sensor which is intended for automatic continuous measurement of concentration of hydrocarbons in explosive areas and carbon dioxide The sensor is used for gas detection in atmosphere Sensor can be used as part of gas analyzing equipment of groups and II according to IEC 60079 0 in the explosion hazardous zones of classes 0 1 2 according to IEC 60079 10 1 and Class Division 1 according to UL Std 913 CAN CSA Std C22 2 No 157 92 Optosense LLC reserves the right to update and change current user manual in parts excluding intrinsic safety parameters and accompanied information specified below File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 4 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED Z NN OPTOSENSE LLC USER MANUAL A e Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X 1 DESCRIPTION The principle of sensor operation is based on NDIR technology Infrared radiation of the LED passed through the measuring gas diffusion cell and reaches the t
22. Y REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED ON OPTOSENSE LLC OPTOSENSE Pi USER MANUAL Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X 110 KA Q CH LO CH 50 40 30 20 Responce concentration LEL 10 AAA LN AINAT VON INN HAUNT ANEN 0 10 20 30 40 50 60 70 80 90 100 Calibrated concentration LEL Fig 4 Typical sensitivity of MIPEX 02 4 X X X X target gas CH4 CH4 C2H6 calibration gas CH4 to other hydrocarbons File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 20 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED D e o OPTOSENSE LLC USER MANUAL OPTOSENSE Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X a cae Appendix B Connection diagram EXPLOSION HAZARDOUS AREA MIPEX 02 X X X 1 X E Combined input parameters Intrinsically safe E i Pome Ly a CANICSA Vmax 5 0V Imax 450mA monitoring system converter USB Fig 6 Connection diagram for MIPEX 02 with USB MIPEX converter during testing In Fig 7 presented an example of sensor connection to ia intrinsic safety with the following characteristics R value between 25 300hm C 20uF or over For any other R more than 300hm use the next equipment to found a minimum necessary capacitance C uF 2 3 R Ohm F
23. a test 80kPa adjustment at 40 C 25 40 C 100kPa 120kPa test 20 RH 50 RH 90 RH 0 2 Vol or 20 of indication in range 40 10 C and 40 60 C Table shows the general accuracy but individual sensor accuracy depends on RX characteristic and limited by the temperature range see Table 3 File name ESAT 413347 006 UM v 2 0 docx THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED Revision 2 0 27 August 2015 Page 18 of 38 Fw a OPTOSENSE LLC USER MANUAL Coy A A Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X RE DEE F GE ME EE E ME NG A a TA ee ee We Bel E E eee ee ee ee ee ee ee WE WT cee ee ee RE ee EEN DE YS Le lt cH K SS eee ee eee ee 30 40 50 60 Calibrated concentration LEL Fig 2 Typical sensitivity of MIPEX 02 1 X X X X target and calibration gases CH4 to other hydrocarbons 110 100 y CO LO CH CH CH a CH w ES CH CH N CH III ANIIT Responce concentration LEL LD CH ANE TONT THONE T a Gn d ae 0 10 20 30 40 50 60 70 80 90 100 Calibrated concentration LEL CH Fig 3 Typical sensitivity of MIPEX 02 1 X X X X target and calibration gases C3H8 to other hydrocarbons File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 19 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC AN
24. cross coefficients for measuring other heavy hydrocarbons gases CnHm XXXXX value of scale coefficient 10000 corresponds to unitary coefficient Page 30 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED eg OPTOSENSE LLC USER MANUAL G ag Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X sem XXXXX XXXXX temperature in Celsius degrees With SETC command SETC XXXXX One point temperature calibration sensor stores in memory the ambient temperature value Also see CCS CFS CKS command description Command allows to set zero in different points of operating ZERO SE EE EENEG zo temperature range See detailed procedure below M setti f temperatur FRO PAASSEN O raul lack XXXXX XXXXX temperature data YYYYY signal ratio lt Stz gt coefficients YYYYY OK The command initiate calculation and store a unifying zero coefficient ZERO2 Setting zero in whole operating to the memory In case of supplying this command concentration temperature range 0 Conc1 0 relation Stz is corrected to 10000 see Table INIT Restore to factory default INIT OK or th command is used in case of wrong sensor calibration or other y INIT FAULT improper actions over the sensor File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 31 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRI
25. d to be defective if defect is due to a fault of Manufacturer The warranty period is 24 months since the date of sensor shipment to a Customer The date of shipment is registered in the ESAT 413347 005 PS datasheet Manufacturer is not responsible for the sensors failure and warranty is void in case of e violations of conditions of operation transportation and storage stated in UM e sensor has marks of unauthorized repair e mechanical damages appeared after handover the sensors to Customer effect of temperature and pressure beyond conditions chemical erosion ingress of foreign substances inside the body of the sensor e defects due to electrical interface unspecified by UM and other documentation conveyed to the Customer e defects due to force majeure circumstances disastrous occurrences intended or reckless act of Customer or third party e defect or failure due to installing damaging changing or erasing of sensors firmware or changing sensors settings because of misuse of service codes via UART e defect or failure due to using power or signal cables unspecified by technical regulations and standards or operating the sensor with EMC influences exceeds maximums specified in IEC 61000 4 3 class II Replacement or repair of defective sensor does not lead to setting a new warranty period The Manufacturer is not responsible for possible damages direct or indirect inflicted to people or properties if this is happened in cas
26. e of repair storage and transportation rules violation or due to purport or reckless act of Customer or third party The Manufacturer does not respond as well for possible damages direct or indirect inflict to appropriate equipment as the result of change damage or data loss The warranty repair or replacement is effecting in site of Manufacturer or designated representative Every shipping and packaging charge and any other incidental expenses if the products must be returned to Manufacturer will be at the Customer s own risk and charged to them File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 13 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED W ty OPTOSENSE LLC USER MANUAL Co Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X 8 CONTACTS MIPEX Technology Optosense LLC 27 AD Engelsa prospect St Petersburg 194156 Russia Tel fax 7 812 633 0594 633 0595 web http www mipex tech com e mail info mipex tech com support support mipex tech com File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 14 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLG IS PROHIBITED Z NN OPTOSENSE LLC USER MANUAL 7 Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X Appendix A Sensor types and charac
27. ecommended otherwise the temperature sensor accuracy comes down 5 3 Proper use It is recommended to use filter to protect the optical components of the sensor from dust excess moisture and other factors that could affect on readings accuracy Take measures for sensors dust protection in the equipment with forced gas pumping A regular monitoring of the filter and it s replacement is necessary filter installation see Appendix E The setting of zero and calibration of the sensor is performed in the course of the d primary installation into a gas analyzer as well as annually during preparation to conducting a check In any cases the setting zero should be done before calibration Methods of setting zero of the sensor and re calibration are given in Appendix D The sensor outputs information about measured concentration value though the digital serial interface UART Data communication protocol is given in Appendix C The sensor is designed for continuous operation There is self testing algorithm inside the firmware code Since 24 2 firmware version there is additional mode of low power consumption to set low power mode see C 3 2 of Appendix C In low power mode sensor consumption is not more than 1 8 mW but performance could be deteriorated Low power mode could be used as explosive gas indication mode even with deep battery discharge in device File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page
28. f it is needed to get readings of CH4 in LEL normalized to 1000 reading 1000 corresponds to 100 LEL of CH4 send CALB1 20000 Use the following sequence to span gas calibration procedure 1 Make Manual zeroing procedure 2 Fill up the sensor with span gas in the range up to 5 Vol recommended in mid of range e g 2 5 Vol CH4 3 Wait until status byte becomes 0 and gas reading stabilized sending DATAE commands and checking their responses 4 Send CALB AAAA command in ASCII 43h 41h 4Ch 42h 20h AAh AAh AAh AAh ODh in HEX where AAAA is gas concentration normalized to 1000 i e AAAA 0250 for 2 5 Vol CH4 Span gas concentration must be more than 0 1 Vol Otherwise the sensor will return FAULT in response Check that response is CALB AAAA OK 5 Repeat operations in items 3 4 of current procedure with span gas in range of 5 100 Vol recommended in mid of range e g 50 Vol CH4 if sensor has measurement range up to 100 vol CH4 No need to calibrate second range it is out of use List of CGM used for checking IR gas sensors MIPEX 02 The recalculation to of LEL shall be effected in accordance with the following formula for concentration expressed in volume fraction vol 100xC C h LFSCL where LFSCL is LEL C component content in volume fraction vol C h LEL of component constant C h 4 4 for methane C h 1 7 for propane File name ESAT
29. ignation of LEL vol 1 N2 100 GOST 9392 74 2 CO Ne 1 0 05 0 015 CO N2 2 5 0 1 0 05 Revision 2 0 27 August 2015 Page 37 of 38 File name ESAT 413347 006 UM v 2 0 docx THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED OPTOSENSE LLC USER MANUAL Z N OPTOSENSE WW E Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X Appendix E Dust filters The dust filters are available on special request For the Standard and Plastic housings is used Top filter ESAT 717100 001 only see Fig 11 For the Fast response modification is used additional Side filter ESAT 717100 002 see Fig 12 The filters material Membrane Bnagunop MOOK TY 6 55 221 1413 2004 On the dark areas applied 3M Double Linered Laminating Adhesive 7952 15 5 Fig 11 Top filter for the Standard and Plastic housings S01 63 0 5 Fig 12 Side filter for the Fast response housing To attach the dust filter perform the following steps e Perform this work at well illuminated and well ventilated place e After attaching the dust filter perform zeroing procedure see Appendix D for details e Wipe the sensor top surface with a cloth that is dampened with absolute alcohol For the Fast response modification perform the same operation on the side surface e Retrieve the teflon tape bonded dust filters
30. ing oscilloscope while working with your device Time mS 10 15 20 Barrier voltage drop waveform with R 30 Ohm amp C 20 uF Barrier voltage drop waveform with R 60 Ohm amp C 20 uF HIE Average current consumption rr Minimum supply voltage Typical current spikes during measurement period Fig 8 Diagrams of typical MIPEX 02 current consumption and barrier voltage drop File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 23 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED W ey OPTOSENSE LLC USER MANUAL Co Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X Appendix C UART communication protocol Firmware release 25 6 Always check the command syntax before sending The commands other than specified in user manual are not allowed Otherwise it might bring to malfunction of the sensor In earlier firmware versions some commands modes are not available C 1 General information e Sensor communication protocol provides data exchange based on Request Response principle e Sensor has fix 9600 baud rate e Electrical parameters of UART transceiver are pointed in 5 2 3 Data format 8 bit message 1 stop bit no parity Frame format if other is not specified the symbols of commands are in ASCII Carriage return CR symbol must be after each command al
31. l symbols in the commands must be sent in one word Delay between symbols are not more than 40 ms The words of the response are separated with a tabulation symbol 09h or space symbol 20h specified below for every command For some commands request is not intended to answer according to following protocol Sensor returns confirmation or rejection of command Request on correct command with correct data returns command name with OK separated by 09h or 20h Request on correct command with wrong data returns command name with FAULT separated by 09h or 20h There is no reaction on wrong command C 2 Work modes There are two modes of sensor s work OEM and USER OEM mode is intended to display information and make calibrations and setup USER mode is intended to display information only Calibration in USER mode is unavailable Send command UART to check current sensor mode see Table 10 C 3 Protocol commands C 3 1 Operating commands Data request commands are the basic sensor functionality and contained various combinations of parameters such as concentration temperature sensor condition and status The shortest command of the protocol is It includes the gas concentration only The most detailed request is F which contains a data calculated during the sensor operating Detailed information about the operating commands is shown in Table 6 File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page
32. not allowed For the metal housing no more than 2 MPa applied to reflecting cover center or on at any point of middle part side surface and no more 100 MPa applied to boundary of reflecting cover For the plastic housing no more than 20 kPa applied to reflecting cover center or on at any point of side surface and no more 2 MPa applied to boundary of reflecting cover Metrological properties are not supported in ambient temperature gradient faster than 0 6 C min Set manual zeroing procedure after continues storage or transportation 5 1 Preparation 5 1 1 If the sensor has been kept in the transportation package at temperature lower than 0 C hold it at temperature of 10 35 C for at least one hour 5 1 2 Remove the packing Check presence of the certification marking ensure absence of mechanical injuries 5 2 Installation Use intrinsic safety connection see Appendix B for details 5 2 1 Use the following recommended sockets for the sensor connection or similar e Cambion 450 3729 01 06 00 e Harwin H3183 05 e Harwin H3182 for the MIPEX 02 X X X 1 A modification Sensor pinout is shown in Fig 1 of Appendix A 5 2 2 Provide intrinsically safe power supply to the sensor from power sources featuring nominal range of output DC voltage of not less than 3 V and not more than 5 V output power PO not less than 0 02 W and not more than 0 25 W in accordance with requirements of standards IEC 60079 0 2004 IEC 60079 1
33. ons is shown on Fig 2 Fig 3 and Fig 4 File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 17 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED MIN OPTOSENSE LLC USER MANUAL 7 Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X Table 4 Response time of the sensors Max response Construction Target gas time t 90 sec CH4 stainless steel Standard and CH4 CH4 C2H6 30 plastic C3H8 CO2 60 CH4 stainless steel with side holes CH4 CH4 C2H6 10 Fast response C3H8 CO2 20 Table 5 General sensor accuracy depends on calibration gas Calibration Accuracy over temperature Additional pressure Additional humidity gas range error error 0 1 Vol or 5 of indication in range 20 25 C 0 2 Vol or 15 0 2 Vol or 10 of 0 2 Vol or 30 of of indication from the CH4 indication in range indication from indication at 10 20 C and 100kPa test 80kPa adjustment at 40 C 25 40 C 100kPa 120kPa test 20 RH 50 RH 90 RH 0 4 Vol or 20 of indication in range 40 10 C and 40 60 C 0 05 Vol or 5 of indication in range 20 25 C 0 1 Vol or 15 0 1 Vol or 10 of 0 1 Vol or 30 of of indication from the indication in range indication from indication at CO2 C3H8 j 10 20 C and 100kP
34. ootloader e Turn off the power of sensor and then turn it on If Jump to user code function has been used in bootloader mode to switch the sensor power is not necessary Description and example of procedure using PC MIPEX evaluation kit and STMicroelectronics flash loader software could be found in archive with new firmware More details about algorithms and protocol in bootloader mode could be found in the documentation AN2606 Application note STM32 microcontroller system memory boot mode For MIPEX 02 3 X X 1 X CO2 proceed sending ZERO2 only with nitrogen feeding File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 32 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED W ey OPTOSENSE LLC USER MANUAL lla Ze Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X C 5 Troubleshooting In case of malfunctions or errors of sensor do following steps 1 Send in OEM mode sequence of commands F SREVH CONST CONST2 in ASCII 2 Save responses in log file 3 Send this log file with comments via e mail support mipex tech com Example of log file listing obtained by MIPEX ETS Port COM3 SN 08065278 Type MIPEX 2_25 6 Sending gt HOOUART lt lt OEM gt F lt lt 01665 10042 08482 07981 10002 10000 10000 00000 00000 00000 08065278 gt SREVH lt lt MIPEX 2_2506 MIPEX 2_2504
35. or increased input power voltage upper than 5V it is needed to recalculate minimum allowable resistance which will completely consistent for our explosion safety parameters In very low power applications it is possible to reduce leakage current through the diodes using a micropower shunt voltage reference instead such as LM4040 or similar protected against reverse voltages by using Schottky diodes File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 21 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED n OPTOSENSE LLC USER MANUAL 7 Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X Explosion hazardous area ia Intrinsically safe circuit 450mA 0 mH 0 mH gt 150 Ohm To MCU with 3 3VDC supply or level translator Transmit logic level HIGH is nearly 2 8V gt 150 Ohm LE pe C3 er LOW no more than 0 3V 3 x BZX84C3V9 Jt R gt 25 Ohm LDO 3 343 VDC Ss aa T j 5V max 3 x BZX84C3V9 5 0V Imax 38 8 F Li lt E S D Ki i gt vi 38 8pF Li CAN CSA Vmax 0 25W Ci 0 25W Ci C gt 20uF we ese ewe ele e Je IECEX ATEX Ui Pi Pmax Fig 7 Example of connecting sensor to ia intrinsic safety circuit Fig 8 demonstrates the waveforms of typical MIPEX 02 current consumption and barrier voltage drop with the different values of R If capaci
36. pment described in Sensor zeroing Command in Available in AZERO ON Turn on autozeroing algorithm AZERO ON AZERO OFF Turn off autozeroing algorithm AZERO OFF AZERO ON or AZERO Check current autozeroing status AZERO OFF CALB AAAA CALB AAAA No Span gas calibration OK or CALB AAAA FAULT E e TER XXXXX concentration for range o Vol OK CH4 CALB2 Write SEN oe ao eh CALB2 XXXX XXXXX concentration range o Vo OK CH4 CALB3 Write SEN E Ee CALB3 XXXX XXXXX ae ration range o Vo OK File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Table 11 Calibration and zeroing commands Description From the firmware ver 2x 6 introduced new autozeroing algorithm and the possibility to adjust the temperature coefficients by user Autozeroing is embedded in self diagnostics algorithm of the sensor It starts after sensor is powered up Self diagnostics is operating during the sensor is on If anyway zero shift is observed manual zeroing procedure is recommended AAAA is CGM concentration value in Vol 100 For example AAAA 0198 corresponds to 1 98 Vol Entered value must not be different from current readings more than 20 times with regard to all units converted to Vol CGM concentration must be more than 0 2 Vol If these conditions are not accomplished sensor responds CALB AAAA FAULT Scaling procedure should be used for following purpose Quick switch between readings in vol or LEL Setup known
37. ructure of F command response Byte number Byte data Data description 1 OEh Special character 2 6 Termo Sensor temperature in ADC readings 7 09h Tabulation 8 12 lt St gt Ratio Us Uref with temperature index 13 09h Tabulation 14 18 Us Operating signal in ADC readings 19 09h Tabulation 20 24 Uref Reference signal in ADC readings 25 09h Tabulation 26 30 Stz0 Ratio lt Stz gt with manual zeroing settings ZERO 31 09h Tabulation 32 36 Siz Ratio StzO with drift compensation algorithm 37 09h Tabulation 38 42 Stzkt Ratio Stz with coefficient of temperature sensitivity 43 09h Tabulation 44 48 Conc Concentration according to a factory calibration 49 09h Tabulation 50 54 Conc1 Concentration scaled by user 55 09h Tabulation 56 60 Status Status word see Table 9 61 09h Tabulation 62 71 Sn Sensor serial number 70 09h Tabulation 71 ControlSum Checksum based on XOR 72 09h Tabulation 73 ODh Carriage return Table 8 Structure of and X commands Command 40h ODh Command x 40 2A x 0D response byte number response byte number and data and data File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 26 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED ge tg OP TOSENSELLC USER MANUAL EA Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X
38. t 2015 Page 5 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED Lee OPTOSENSE LLC OPTOSENSE sie Department USER MANUAL SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X 2 TECHNICAL SPECIFICATIONS Table 1 Technical specification available options see Appendix A Gas sampling method Diffusion Operating principle Non Dispersive Infra Red NDIR CH CH ICH CoHe Target gas Ge CO Relative humidity up to 98 Operating storage and See 80 120 transportation p conditions Operating temperature C Keier 10 40 Temperature range C 40 60 03 F 20 50 O 20x16 5 without pins standard and plastic versions Overall dimensions mm 22x16 5 without pins fast response versions 4 6 Pins length mm 5 75 16 6 Weight g 15 5 5 5 Stainless steel standard and fast response versions Housing Plastic MTBF years 10 i 20 without dust filter Ingress protection IP rating 54 with dust filter 0 1 5 0 2 5 Measurement range Vol 0 5 E 0 100 03 Up to 0 05 Vol or 5 of indication for CO2 and C3H8 Accuracy UART data p ee SS Up to 0 1 Vol or 5 of indication for CH4 10 20 Response time T90 s 30 60 File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 20
39. teristics MIPEX 02 B C D 1 A G Pins length version If not specified 5 75 mm pins A 4 6 mm pins Output format 1 UART Construction 1 stainless steel Standard 2 stainless steel with side holes Fast response 3 plastic Application Group I for mines Il Group II for places with a potentially explosive atmosphere other than mines see Table 3 for details Target das 1 CH4 methane 2 C3H8 CnHm hydrocarbons CR CO2 carbon dioxide 4 CH4 CH4 C2H6 acc to IEC 60079 29 1 MIPEX model number Term target gas means the model of the LED and photodiode with the spectral range adjusted for best gas detection Term calibration gas is the gas mixture used for the sensor calibration There is an additional RX code presented on the sensor label The code explains application properties see Table 3 for details R calibration gas and range X temperature class and accuracy File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 15 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED n OPTOSENSE LLC USER MANUAL eee Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X Table 2 MIPEX 02 X X X 1 X types and overall dimensions ensor type 8 Sensor type IPEX 02 X X 1 eg e Weight f standard 520 2 MPEX OX d Teet
40. the explosion hazardous zones in the established order is admitted to operate the sensor e Do not use damaged sensor Unauthorized repair of the sensor is not allowed e It is strongly prohibited to discharge the control gas mixture CGM to the atmosphere during the sensor calibration e Do not allow the contact of the sensor with aggressive substances e g acidic liquids or gases that might attack metals or solvents that might affect polymeric materials e The sensor does not contain any poisons and other harmful substances that might be released from the sensor during its operation Risk to humans and environment does not exist File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 9 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED W ty OPTOSENSE LLC USER MANUAL Qo Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X 5 INSTALLATION AND SERVICES Models MIPEX 02 X X 3 1 X are potential electrostatic charging hazard clean them with a damp cloth only Take it into account during installation and operation of the sensor in end user equipment The MIPEX 02 X X 1 1 X and MIPEX 02 X X 2 1 X models of the equipment were tested and found to hold 17 4pF maximum capacitance Connection should be made via PCB sockets Soldering to the pins will seriously damage the sensor Excessive force on sensor housing is
41. tor C 20uF and resistor R 300hm in power supply part of the diagram in Fig 1 the output voltage of the barrier during the current pulses are not less than 3 1V then MIPEX will work properly without negative influence on performance If capacitor C 20uF and resistor R 60 Ohm the barrier output voltage falls below the minimum supply voltage 3 0V In this case the sensor might be unstable To prevent MIPEX 02 supply voltage decrease below 3 0V use following recommendations e Increasing of barrier supply voltage e Increase the value of the capacitor in line i e for R 60 Ohm use capacitor value at least C uF 2 3 60 Ohm 40 uF e Reduce the value of R but not less than 25 Ohm because of limitations Ui 0 25W with 5Vmax File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 August 2015 Page 22 of 38 THE SOLE PROPERTY OF OPTOSENSE LLC ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED Pe wi OPTOSENSE LLC USER MANUAL W Design Department SMALL SIZE EXPLOSIVE GAS MEASURING SENSOR MIPEX 02 X X X 1 X Output current of TxD line and the leakage current through the protection diodes contribute to the voltage drop across the resistor R In too large output current in TxD circuit it is possible to get the peak output voltage of the barrier below 3 0V which will cause incorrect operation of the sensor To be completely sure that sensor will be powered properly we recommend to check supply voltage us
42. wo of photodetectors one of which detects radiation in the wavelength range of 3 25 to 3 45 um only while the other one detects radiation in the wavelength range of 3 45 to 3 7 um The analyzed gas that is present in the measuring cell absorbs radiation of the operating wavelength Oo and does not affect radiation of the reference operating wavelength Ar The amplitude lo of the light sensitive cell operating signal changes upon changing concentration in accordance with equation lo Ir exp K A0 K Ar CL 1 where K A coefficient of absorption at a given wavelength L optical length of cell Cc measured concentration of gas lo Ir amplitude of signals at light sensitive cell The concentration of gas is C Ln lo Ir L K 10 K Ar 2 Using differential dual wavelength method allows eliminating influence of water vapor contamination of optical elements and other non selective hindrances affecting both channels similarly The sensor structure contains an optical cell with a mirror system infrared light emitting diode LED LED driver receivers of Signal and Reference channels analog amplifiers microcontroller and supply voltages unit The microcontroller of the sensor performs storage of unique calibration constants calculation of gas concentration based on measured results communication via UART output interface File name ESAT 413347 006 UM v 2 0 docx Revision 2 0 27 Augus
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