605-00010 Parallax Inc, 605-00010 Datasheet

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

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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

)—CO2--- partial Pressure

MG-811

Fax: 86 371 67169090

MG811

))

Ec—Constant Volume

CO2 Sensor

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 ...

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