605-00010 Parallax Inc, 605-00010 Datasheet
![Air Quality Sensors CO2 Gas Sensor](/photos/17/81/178145/605-00010-l_sml.jpg)
605-00010
Manufacturer Part Number
605-00010
Description
Air Quality Sensors CO2 Gas Sensor
Manufacturer
Parallax Inc
Type
Distance and Air Sensorsr
Datasheet
1.605-00010.pdf
(2 pages)
Specifications of 605-00010
Mounting Style
Radial
Operating Supply Voltage
6 V
Maximum Operating Temperature
+ 50 C
Minimum Operating Temperature
- 20 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Hanwei Electronics
Features
Application
Figure, It composed by solid electrolyte layer
(1) ,Gold electrodes(2) ,Platinum Lead
(3) , Heater ( 4) , Porcelain Tube (5) , 100m
double-layer steeless net(6) ,Nickel and
copper plated ring(7) ,Bakelite (8),Nickel
and copper plated pin(9) 。
Working Principle
When the sensor exposed to CO2,the following electrodes reaction occurs:
The Electromotive force(EMF) result from the above electrode reaction, accord with according to Nernst’s
equation::
enough , the sensor equals to a cell, its two sides would output voltage signal ,and its result accord with
Nernst’s equation。 In sensor testing, the impedance of amplifier should be within 100—1000GΩ,Its testing
Tel:
Structure and Testing Circuit
Sensor adopt solid electrolyte cell Principle,It is composed by the following solid cells:
Cathodic reaction:2Li + + CO2 + 1/2O2 + 2e - = Li2CO3
Anodic reaction:2Na+ + 1/2O2 + 2e- = Na2O
Overall chemical reaction:Li2CO3 + 2Na + = Na2O + 2Li + + CO2
From Figure 1B, Sensor Heating voltage supplied from other circuit , When its surface temperature is high
Good sensitivity and selectivity to CO2
Air,Au|NASICON|| carbonate|Au, air,CO2
Sensor Structure and Testing Circuit as
86-371-67169080
Low humidity and temperature dependency
Long stability and reproducibility
Air Quality Control
Ferment Process Control
Room Temperature CO2 concentration Detection
EMF = Ec - (R x T) / (2F) ln (P(CO
P(CO
T— Absolute Temperature (K)F—Faraday constant
2
)—CO2--- partial Pressure
MG-811
Fax: 86 371 67169090
MG811
2
))
Ec—Constant Volume
CO2 Sensor
Figure 1A
Figure 1A
R—Gas Constant volume
E-mail: sales@hwsensor.com
http: //www.hwsensor.com
Figure 1B
Related parts for 605-00010
605-00010 Summary of contents
Page 1
Hanwei Electronics MG-811 Features Good sensitivity and selectivity to CO2 Low humidity and temperature dependency Long stability and reproducibility Application Air Quality Control Ferment Process Control Room Temperature CO2 concentration Detection Structure and Testing Circuit Sensor Structure and Testing Circuit ...
Page 2
Hanwei Electronics MG-811 current should be control below 1pA. Specifications : Symbol Parameter Name V Heating Voltage H R Heating Resistor H I Heating Current H P Heating Power H Tao Temperature Tas Storage Temperature E Sensitivity ...