Environment Protection System INC.

1
Environment Protection System INC.
2
GAS DETECTION SENSOR
3
CATALYTIC SENSOR
4
Catalytic Bead ???
Wheatstone Bridge
No Temperature or Humidity Effect
Silicone Resistant
0-100 L.E.L. Scale
5
Wheatstone Bridge
6
Electrochemical
Current Generating Electrolytic Reaction
Specificity to Gas of Interest
PPM for Toxics or Percent Volume for Oxygen
Sensing-electrode 2CO 2H2O 2CO2 4H
4e- Counter-electrode O2 4H 4e 2H2O Cell
reaction 2CO O2 2CO2
7
????? Membrane Type Galvanic Cell Method
?? (???) O22H2O 4e- 40H- ?? (?)
2Pb 2Pb2 4e-
8
Sensing CO H2O CO2 2H 2e- Counter ½O2
2H 2e- H2O And the overall reaction is CO
½O2 CO2
9
SPECTROGRAM
10
Infrared
Methane or Propane
Carbon Dioxide
Accurate
Large Measurement Range
Low Maintenance
Light Absorption sensors are becoming more
affordable and more reliable. They are used for
optically absorbing gases that fall in the
infrared (IR), visible, or ultraviolet (UV)
spectral ranges. Some gases reliably detected by
optical sensors are carbon dioxide, methanol,
hydrogen cyanide, chlorine, refrigerant gases and
naphthalene.
11
(No Transcript)
12
SEMICONDUCTOR SENSOR
13
SENSOR ARRAY
14
High-Temperature Gas Sensor Array
15
SENSOR ARRAY APPLICATION
16
Methanol Concentration Sensor
(???CH3OH)
Integrated Sensing Systems, Inc. (ISSYS) in
Ypsilanti, Michigan, announced the small methanol
concentration sensors under development,
targeting the active Direct Methanol Fuel Cell
(DMFC) market. These small sensors can also be
utilized in a variety of other industrial and
analytical applications for the need of a
low-cost, accurate, small, inline density or
chemical concentration sensors