Small size and small power consumption gas detector based on FPI and ICO-IGM&I designed LED and Photo Diode

1. Small size and small power consumption gas detector based on FPI and ICO-IGM&I designed LED and Photo Diode

Small size and small power
consumption gas detector based on
FPI and ICO-IGM&I designed LED
and Photo Diode
Dr.Alex Litvak
Michael Maksyutenko

2. FPI, FPI assembled with A2B6-A4B6 Photo Diode. Designed and manufactured by ICO-IGM&I

FPI, FPI assembled with A2B6-A4B6
Photo Diode. Designed and
manufactured by ICO-IGM&I

3. Basic parameters of FPI based Photo Detector (ICO and IGM&I design and manufacturing)

Basic parameters of FPI based Photo
Detector (ICO and IGM&I design and
manufacturing)
N
Parameter
FPI based Photo Diode
1
Aperture, mm x mm
1,5
2
Size of Photo Detector, mm
Dia 9 x 5,5
3
Range of tune, um
3…3,6
4
FWHM of transmittance band, nm
35
5
Transmittance coefficient, %
>=50
6
Voltage range, V
0…28
7
Time of tune per whole range, msec
200

4. Generations of MIPEX-05

1st Generation:
1st Q 2015
2d Generation:
4th Q 2015
3d Generation:
2d Q 2016

5. Block-scheme of the model of gas detector

6. Spectrum of CH4 absorbance

7. Detectivity for methane

Photo Diode with
FPI
Slope dX/dS/%
Signal noise S RMS%
Detectivity equal to
pick-to-pick noises
-0,06856
0.028903
5,69798 ppm

8. Typical temperature dependence without compensation

9. Example of detecting components in mixture methane-propane

Gas
Concentration in gas
mixture, vol %
Readings, vol %
Error
CH4
0,6834
0,6818
0.24%
C3H8
0,1281
0,1289
-0.63%

10. Example of detecting components in mixture methane-ethane

Gas
Concentration in gas
mixture, vol %
Readings, vol %
Error
CH4
1,54
1,59
3.2%
C2H6
0,073
0,073
0.24%

11. Preliminary conclusions

New A2B6 – A4B6 photodiode and LED, being combined with
FPI, opens new and revolutionary possibilities for mass gas
detection.
(1)Serious increasing of detectivity and selectivity in comparison
to MIPEX-02…-04 sensors (NDIR method), opens the possibility
to get markets of fixed and portables for detecting of VOCs.
(2)Serious increasing of detectivity and selectivity in comparison
to MIPEX-02…-04 sensors (NDIR method), opens the possibility
to get markets of portables for leak detecting (with ppm
sensitivity to CH4, selective)
(3)Serious increasing of selectivity in comparison to MIPEX-02…04 sensors (NDIR method), opens the possibility to get markets
of fixed and portables for detecting of LEL of complicate gas
mixtures of HC gases (real flammable sensor). Including 2 and 3
years CLIPs (disposable) 4-gas instruments.

12. Detectivity

(1) Application of FPI based A2B6-A4B6 PDs give the
possibility to increase the sensitivity of simple
and low cost optical method up to:
(a) not less than 4 ppm of CH4 at the optical path
length of less than 10 sm (MIPEX-02 have 6sm)
(b) not less than 1 ppm of C3H8 and heavier HC
This opens the possibility to get markets of fixed
and portables for detecting of VOCs and leak
detectors

13. Selectivity

(2) Application of FPI based A2B6-A4B6 PDs give the possibility
to increase the selectivity of simple and low cost optical method
and:
(a) For VOCs detection to make more correct detection of
mixtures methane – ethane – alkanes – aromatics in vol % and
mg/L
(b) For leak detectors to select methane from ethane and to
select natural gas from biogas
(c) For detectors of mixture of HC to make more correct
detection of mixtures methane – ethane – alkanes – aromatics
in LEL
This opens the possibility to get markets of instruments for
detecting of VOCs, leak detectors and “real flammable”detectors