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Mipex -04 User Manual

Ultra-low power infrared gas sensor
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Optosense LLC
USER MANUAL
Design department
MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR
ULTRA-LOW POWER INFRARED GAS
SENSOR MIPEX-04
USER MANUAL
ESAT.100000.00.02 UM
ESAT.100000.00.02 UM
Revision 02
December 12th, 2016
Page 1 of 41
THE SOLE PROPERTY OF OPTOSENSE LLC. ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED.

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  • Page 1 Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR ULTRA-LOW POWER INFRARED GAS SENSOR MIPEX-04 USER MANUAL ESAT.100000.00.02 UM ESAT.100000.00.02 UM Revision 02 December 12th, 2016 Page 1 of 41 THE SOLE PROPERTY OF OPTOSENSE LLC. ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED.
  • Page 2 Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR INFORMATION CONTAINED IN THIS DOCUMENT IS THE SOLE PROPERTY OF OPTOSENSE LLC. ANY REPRODUCTION IN PARTS OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED.

  • Page 3: Table Of Contents

    Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR Table of contents Introduction ........................... 4 1.1. List of abbreviations ...................... 4 1.2. List of terms ........................4 Description ..........................5 Technical specifications ....................... 6 Intrinsic safety ........................8 Handling precautions ......................

  • Page 4: Introduction

    1. INTRODUCTION This user manual (UM) is intended to describe design and operation of small-sized gas sensor MIPEX-04-X-XX-3.1 (hereinafter MIPEX-04 or sensor). UM contains basic technical data, recommendations and other information necessary for proper operation, maintenance and storage of sensor.

  • Page 5: Description

    – signal amplitude at photodetector. Differential dual wavelength method allows eliminating of water vapor, optical elements contamination and other non-selective hindrances influence. Target gases available for MIPEX-04 are listed in Table 1. Table 1. Target gases for MIPEX-04 sensors Optical elements...

  • Page 6: Technical Specifications

    Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR 3. TECHNICAL SPECIFICATIONS Table 2. General specifications (for available options see Appendix A) Gas sampling method Diffusion Operating principle Non-Dispersive Infra-Red (NDIR) Target gas Relative humidity, % up to 98...
  • Page 7 Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR Table 4. Electrical specifications, marking and standards compliance Operating supply voltage, VDC +2.8…+5.0 Max supply voltage, VDC +5.5 Communication interface UART Average current, μA Sensor is not certified.

  • Page 8: Intrinsic Safety

    ) within the range of +2.8…+5.5 V and with the output power (P ) range of 0.02…0.13 W in accordance with IEC 60079-0, IEC 60079-11 and whose parameters conform MIPEX-04 intrinsic safety values pointed above. Current provided by power supply unit must be 20 mA ≤ I ≤ 200 mA.

  • Page 9: Handling Precautions

    Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR 5. HANDLING PRECAUTIONS  Do not use damaged sensor. It must be repaired only by personnel authorized by manufacturer.  Keep sensor out of contact with aggressive substances e.g. acidic environments, which can react with metals, as well as solvents, which may affect polymeric materials.

  • Page 10: Installation And Service

    MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR 6. INSTALLATION AND SERVICE  MIPEX-04 may accumulate an electrostatic charge on its housing. Thus, there is risk of electrostatic discharge. Clean only using a damp cloth. Note this during installation and use of sensor in the end-user equipment.
  • Page 11 Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR Sensor transmits information about measured concentration via UART interface. Sensor supports embedded self-testing while operating and is designed for continuous 24/7 operation. End-user equipment UART transceiver should meet the requirements of standards IEC 60079-0, IEC 60079-11.
  • Page 12 Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR 0.35 0.25 0.15 0.05 -0.05 0.005 0.01 0.015 0.02 0.025 Time T, s Fig. 2. Typical voltage drop within a single operating period (3.3 V Input; R = 100 Ohm) 0.35...

  • Page 13: Getting Started

    Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR 6.4. Getting started  If “INDSIG” mode is active, during first 40 seconds after the power is up sensor does not return the measured concentration value (the value is displayed as “- 1”, hex: “8001”, see Table 12).

  • Page 14: Storage And Transporation

    Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR 7. STORAGE AND TRANSPORATION 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 the respective type of transportation.

  • Page 15: Warranty

    Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR 8. WARRANTY Manufacturer guarantees sensor compliance with specifications and requirements stated in this UM if customer follows operating, transportation and storage terms. During warranty period, manufacturer replaces or repairs for free all products, which do not work because of production fault.

  • Page 16: Contacts

    Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR 9. CONTACTS MIPEX TECHNOLOGY / Оptosense LLC 27AD, Engelsa prospekt, 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 ESAT.100000.00.02 UM Revision 02...

  • Page 17: Appendix A. Sensor Types And Characteristics

    Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR APPENDIX A. SENSOR TYPES AND CHARACTERISTICS MIPEX-04-B-RX-3.1 Interface options: 1. UART Housing type: 3. “Plastic” Application: R – calibration gas and range* X – temperature class and accuracy** Target gas**: 1.
  • Page 18 Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR Table 5. Metrological properties of sensor (RX-code) Calibration Measurement Temperature Part number Target gas RX-code range, °C range, % vol. 0…2.5 MIPEX-04-1-00-3.1 0…5 MIPEX-04-1-10-3.1 -10…+40 0…100 MIPEX-04-1-20-3.1 0…2.5 MIPEX-04-1-01-3.1...
  • Page 19 (whichever is greater) within the range of -40…-10 °C and +40…+60 °C Table shows basic variability of MIPEX-04 readings. For each sensor modification, readings variability stated in Table 6 is provided within a temperature range determined by a sensor RX code (see Table 5).
  • Page 20 MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR C3H8 C2H6 C4H10 C6H14 C2H4 Gas mixture concentration, % LEL Fig. 4. Typical sensitivity of MIPEX-04-1-XX-3.1 (target and calibration gas is CH ) to other hydrocarbons C3H8 C4H10 C5H12 C6H14 Gas mixture concentration, % LEL Fig.
  • Page 21 Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR Table 7. Sensor pinout Purpose +2.8…+5.0 VDC 1-3, 7 Empty UART Rx in UART Tx out Fig. 6. Sensor outline (all dimensions are in millimeters) ESAT.100000.00.02 UM Revision 02...
  • Page 22 Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR Fig. 7. Recommended mating board configuration (all dimensions are in millimeters) ESAT.100000.00.02 UM Revision 02 December 12th, 2016 Page 22 of 41 THE SOLE PROPERTY OF OPTOSENSE LLC. ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED.

  • Page 23: Appendix B. Connection Diagram

    Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR APPENDIX B. CONNECTION DIAGRAM EXPLOSION HAZARDOUS AREA MIPEX-04-X-XX-3.1 Combined input parameters: 8. Power Power 7. GND IECEx/ATEX: = 5.5 V, I = 200 mA, 6. Empty = 26 µF, = 0.13 W, C...
  • Page 24 +2.8...5.0 V Micro-USB EMPTY UART MIPEX-04 MIPEX-04 interface board Fig. 9. Connection diagram for MIPEX-04 via MIPEX-04 interface board (ESAT.200100.00) during span calibration (SPC – pin for measuring sensor power consumption; V – voltmeter) ESAT.100000.00.02 UM Revision 02 December 12th, 2016 Page 24 of 41 THE SOLE PROPERTY OF OPTOSENSE LLC.
  • Page 25 Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR Fig. 10. Example of connecting sensor to “ia” intrinsically safe circuit ESAT.100000.00.02 UM Revision 02 December 12th, 2016 Page 25 of 41 THE SOLE PROPERTY OF OPTOSENSE LLC. ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED.

  • Page 26: Appendix C. Sensor Communication Protocol

    APPENDIX C. SENSOR COMMUNICATION PROTOCOL Current manual describes firmware release 11.9. Sensor communication protocol is based on UART interface. Appendix C.1. General information Data exchange with MIPEX-04 sensors is performed via UART interface:  Sensor has symbol rate of 57600 bauds. ...

  • Page 27: Appendix C.2. Communication Protocol Commands

    Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR Appendix C.2. Communication protocol commands There are several types of commands used for communication with sensor: commands for requesting measured data (see Appendix C.2.1); commands for controlling operating mode (see Appendix C.2.2);...
  • Page 28 Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR Table 8. Structure of response to <@> and <@*X> commands Command <@> (hex: “40 0D”) Command <@*X> (hex: “40 2A X 0D”) Byte number @ (hex: “0x40”) Byte data Table 9.
  • Page 29 Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR Table 11. Bits of status bytes’ description Status word Description Recommendations number compliance – – Normal mode, static temperature Sensor is warming up. Do not perform span calibration.

  • Page 30: Appendix C.2.2. Commands For Controlling Operating Mode

    Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR Appendix C.2.2. Commands for controlling operating mode USER Request syntax Response description Command description mode mode Response contains of word Switches commands level from “OEM” or, if the password is “USER”...

  • Page 31: Appendix C.2.4. Commands For Sensor Configuring And Span Calibrating

    Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR Appendix C.2.4. Commands for sensor configuring and span calibrating USER Request syntax Response description Command description mode mode AZERO ON Intended for checking current auto- AZERO? zeroing algorithm status.
  • Page 32 Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR USER Request syntax Response description Command description mode mode Returns date of the last span DATEZC? DD.MM.YY calibration operation. Writes the last date of span DATEZC DD.MM.YY OK calibration to sensor memory DATEZC DD.MM.YY...
  • Page 33 Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR USER Request syntax Response description Command description mode mode Returns numbers contained Contains bytes user section of sensor “0D” USERDATA? information memory separated from symbol. each other with “0D”...

  • Page 34: Appendix D. Sensor Configuration

    Zeroing and span calibration should be carried out by qualified personnel outside of an explosive area under normal conditions in the following sequence: Communicate sensor via UART interface (example based on MIPEX-04 interface board ESAT.200100.00 is shown on Fig. 12; gas adapter ESAT.200105.00 is available as an option).
  • Page 35 MIPEX-04 Micro-USB cable Interface board Fig. 12. Typical scheme of MIPEX-04 span calibration Converting of % vol. to % LEL is performed according to the following formula: 100 × C LFSCL = C(h) where: LFSCL –...

  • Page 36: Appendix D.2. Temperature Dependence Of Zero Adjustment

    Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR Table 13. CGMs used for CH span calibration Number as Limits of listed in the CGM number Content of Permissible permissible Components State Register according to methane, %...
  • Page 37 Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR Fig. 13. Scheme of the temperature coefficients adjustment ESAT.100000.00.02 UM Revision 02 December 12th, 2016 Page 37 of 41 THE SOLE PROPERTY OF OPTOSENSE LLC. ANY REPRODUCTION WITHOUT THE WRITTEN PERMISSION OF OPTOSENSE LLC IS PROHIBITED.

  • Page 38: Appendix E. Dust Filter Attaching

    Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR APPENDIX E. DUST FILTER ATTACHING To improve sensor operation reliability dust filter should be attached to sensor top side. Filters are optional and available separately. Filter material is fluoroplastic membrane “Vladipor MFFC TC 6-55-221-1413-2004”.

  • Page 39: Appendix F. Troubleshooting

    Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR APPENDIX F. TROUBLESHOOTING If there is suspicion that sensor returns wrong data and / or operates improperly, it is necessary to check its status by sending command <DATAE2> (see Appendix C.2.1). It returns concentration value and two status bytes.
  • Page 40 Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR Table 15. Structure of response to <F> command Command <F> (hex: “46 0D”) response Byte number Byte data Data description Hex: “0x0E” Special character Sensor temperature expressed in ADC counts Hex: “0x09”...
  • Page 41 Optosense LLC USER MANUAL Design department MIPEX-04 ULTRA-LOW POWER INFRARED GAS SENSOR Table 16. Status word values description Status Priority Description Recommendations word level Normal operating mode, temperature 12 (lowest) is static. Sensor is warming up. Do not perform span calibration.

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