Summary of Contents for EOC MDS-4
- Page 1 Electro Optical Components, Inc. 5464 Skylane Boulevard, Suite D, Santa Rosa, CA 95403 Toll Free: 855-EOC-6300 www.eoc-inc.com info@eoc-inc.com MDS-4 ETHANE ENSOR ODULE NSTRUCTION ANUAL rev. 090915...
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Page 2: Table Of Contents
TABLE OF CONTENTS General Information Application & Description Features Temperature compensation Operation conditions Information about tuning and calibration Operating instructions Precautions Appendix: MDS-4 testing results with different gas concentrations... -
Page 3: General Information
GENERAL INFORMATION Application & Description MDS-4 is a methane sensor module for CH detection. It includes a compact optical cell and electronics for LED power supply and PD signal amplification all-in-one. Features Diffusion type detection Measurement in 0-5% (volume) concentration range ... -
Page 4: Information About Tuning And Calibration
INFORMATION ABOUT TUNING AND CALIBRATION MDS-4 methane sensor module has two analogue signal outputs: – temperature signal output – measuring signal output Processing these 2 signals enables obtaining information about gas concentration. The sensor module is precalibrated for methane measurement at LMSNT facilities. - Page 5 INFORMATION ABOUT TUNING AND CALIBRATION The resulting calibration coefficients (a, b, c, d, e, f) are pointed in the technical report provided with your MDS-4 module. In order to treat the signals we recommend using a DAQ device and a PC for signal processing using the formulas above with calibration coefficients.
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Page 6: Precautions
OPERATION INSTRUCTION Connect the temperature and measuring signal output of MDS-4 module to a PC via a DAQ. signal output measuring signal temperature signal We recommend using the DAQ with analog input resolution at least 14-bit. Connect the 3.3V stabilised DC power supply with the power input of MDS-4 module. -
Page 7: Appendix: Mds-4 Testing Results With Different Gas Concentrations
APPENDIX MDS-4 testing results with different gas concentrations Methane Signal Standard Noise, Resolution, Gas mixture concentration, Output, Deviation, Air (Dry Bottled) 2.110 CH4 + N 1000 2.119 CH4 + N 2500 2.136 2.17 7.58 CH4 + N 5000 2.158 2.190... - Page 8 APPENDIX Relative signal change dependence on methane concentration signal output) Methane concentration, %...
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