Introduction
The DS-CO2-20 is a digital CO2 concentration sensor based on the principle of non-dispersive infrared absorption. It continuously collects and calculates the concentration of carbon dioxide in air per unit volume and outputs it as a universal digital interface.
The sensor can be embedded in various instrumentation environment improvement equipment related to carbon dioxide concentration, providing timely and accurate concentration data.
Working Principle
The sensor adopts the principle of non-dispersive infrared absorption, and has a single gas chamber and two channels, which can obtain the light intensity corresponding relationship and variation of the infrared light irradiated on the receiving device by two wavelengths, and according to the carbon dioxide for the infrared light of two wavelengths thereof. The absorption ratio function calculates the actual carbon dioxide concentration in the chamber.
Digital Interface Definition
P1N1:VCC:Power supply (+5V)
PIN2:GND:Negative power supply
PIN3:TXD:Serial Receiver Pin / TTL Level @3.3V
PIN4:RXD:Serial port transmit pin / TTL level @3.3V
PIN5:RESET:Module reset signal / TTL level @3.3V, low reset
PIN6:NC:NC
PIN7:NC:NC
Parameter:Index:Unit
Effective:400~3000:ppm
Maximum:400~5000:ppm
Resolution:1:ppm
Precision:± (50ppm + 5% FS)
Single response time
Comprehensive response time:^25:Seconds (s)
DC supply voltage:Typ:5.0 Min:4.5 Max; 5.5:Volt (V)
Working current:Peak 400 average 40:Milliamper (mA)
Stand-by current
Data interface level:L
2.7@3.3:Volt (V)
Working temperature:0-50:Photographing degree (2)
Operating humidity:0~85% non-condensing
Storage temperature:-40~85°C:Photographing degree (2)
Mean time between failures:>=3:Year (Y)
Pin spacing:2:Millimeter (mm)
Package includes
1 x CO2 Sensor
Additional information
| Weight | 0.011 kg |
|---|
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