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The C20 Analogue module

Description

The C20 Analogue moduleconverts the digital output of GSS C20 sensor to a voltage output.The voltage is proportional to the CO2 concentration.

 

 

Connections

The analog version of thesensor has a three wire connection:

 

Pin 1

+ 5v Supply. (4.7 to 5.5V,240mA peak current)

Pin 2

Analogue output

Pin 3

0V

 

Analogue Output

 

GSS offers a range of output options. The standard options are shown below, but other options can be supplied on request.

The output voltage will vary linearly withCO2 concentration between Vmin and Vmax (seegraph).

 

 

 

 

 

To convert a voltage to a carbon dioxide concentration:

CO2 = Output Voltage * (Full Scale Reading)/ (Vmax-Vmin)

For example, if the output voltage is2.5V, and the full scale reading (ie the range is 5000ppm, and theVmax and Vmin are 4.0V and 0.5V respectively, then the measuredconcentration is:

CO2 = 2.5 * (5000/(4-0.5)) = 3571ppm

Range

The concentration range must be specifiedat the time of ordering and is not field-configurable. Standardranges are:

0-5000ppm

0-5%

0-10%

0-20%

0-65%

0-     100%

 

 

Zeroing

 

The sensor can bezeroed by pressing the switch mounted on the analogue module. Theswitch should be pressed for at least 1s. This assumes that the sensor isin a CO2-free environment ( eg Nitrogen).

 

Shenzhen xinshilian Technology Co., Ltd.
Tel :86-0755-83680810 83680820 83680830 83680860    Fax:0755-83680866
Address:Room 712, Huaneng Building, Shennan Zhong Road, Shenzhen 518031, China  PostCode:518031
 

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