EOC MDS-4 Instruction Manual Download Page 5

 

 

HEAD OFFICE

 LED Microsensor NT, LLC 

 

R&D CENTRE

 Microsensor Technology, LLC  

 194223, postbox 100, St.Petersburg, Russia 

● [email protected] ● www.lmsnt.com

 

 

 

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.

 

We  recommend  performing  calibration  c

hecks annually. Se

nsor  module 

recalibration  procedure  involves  the  adjustment  of  “

a

”  coefficient  only,  all  other 

coefficients  remain  unchanged.

 

To  define  the  recalibrated  “

a

”  coefficient

  value one 

needs to measure 

U

SD

 

and 

U

T

 

at a specific

 

temperature with 

zero methane level and 

use the following formula:

 

𝒂

𝒓𝒆𝒄𝒂𝒍𝒊𝒃𝒓𝒂𝒕𝒆𝒅

=

𝑈

��

(

𝒃

×

𝑈

+

𝒄

×

𝑈

)

 

Summary of Contents for 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 METHANE SENSOR MODULE INSTRUCTION MANUAL rev 090915...

Page 2: ...Application Description 3 Features 3 Temperature compensation 3 Operation conditions 3 Information about tuning and calibration 4 5 Operating instructions 6 Precautions 6 Appendix MDS 4 testing resul...

Page 3: ...ical cell and circuitry Gases precalibrated for methane but will respond to most hydrocarbons Possibility of integration with wireless data transfer protocols like Zigbee WiFi GPRS Possibility of powe...

Page 4: ...ature change from 0 C to 40 C range with 0 2 C min During this procedure signal values from UT temperature signal and USD measuring signal are measured with 0 04 C resolution Basing on this data array...

Page 5: ...and a PC for signal processing using the formulas above with calibration coefficients We recommend performing calibration checks annually Sensor module recalibration procedure involves the adjustment...

Page 6: ...ate to your MDS 4 module Precautions Turn on the power supply only after all connections are made and tested Do not disassemble the optical cell otherwise the optical system will be damaged Do not use...

Page 7: ...eviation mV Noise mV Resolution ppm Air Dry Bottled 0 2 110 2 17 7 58 CH4 N2 1000 2 119 252 CH4 N2 2500 2 136 237 CH4 N2 5000 2 158 253 CH4 N2 10000 2 190 303 CH4 N2 50000 2 304 632 2 11 2 16 2 21 2 2...

Page 8: ...8 APPENDIX Relative signal change dependence on methane concentration USD signal output 8 7 6 5 4 3 2 1 0 0 1 2 3 4 5 Relative signal change Methane concentration...

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