IR Gas Sensors

Amphenol SGX Sensortech IR Gas Sensors use the non-dispersive infrared (NDIR) principle to detect and monitor the presence of carbon dioxide, hydrocarbons, and acetylene gases. These low-power sensors are built with a rugged stainless steel construction and no moving parts, providing reliable, fail-safe operation with low maintenance. Amphenol SGX Sensortech IR Gas Sensors feature an immunity from "poisoning."

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Description Datasheet Availability Pricing (CAD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Type
Sensor Type
Measuring Range - Min
Measuring Range - Max
Output Type
Supply Voltage - Min
Supply Voltage - Max
Minimum Operating Temperature
Maximum Operating Temperature
Output Voltage
Mounting Style
Series
Amphenol SGX Sensortech Air Quality Sensors 19mm 0-5% vol CO2 InfraGasSenswThermis
Datasheet
21In Stock
Min.: 1
Mult.: 1

Infrared - Analog Carbon Dioxide (CO2) 0 % 5 % Analog 3 V 5 V - 20 C + 55 C Through Hole IR1x Series
Amphenol SGX Sensortech Air Quality Sensors 16mmHydCarInfrGasSen 0-5%/0-100%VIntTher
Datasheet
13In Stock
Min.: 1
Mult.: 1

Infrared - Analog Hydrocarbon 0 % 100 % Analog 3 V 5 V - 20 C + 55 C Through Hole IR1x Series
Amphenol SGX Sensortech Air Quality Sensors 19mm 0-5% vol CO2 InfrGsSnswTempSensIC
Datasheet
25In Stock
Min.: 1
Mult.: 1

Infrared - Analog Carbon Dioxide (CO2) 0 % 5 % Analog 3 V 5 V - 20 C + 55 C Through Hole IR1x Series
Amphenol SGX Sensortech Air Quality Sensors Srs2 19mm 0-5% CO2 IR Sens w Thermistor
Datasheet
19In Stock
Min.: 1
Mult.: 1

Infrared - Analog Carbon Dioxide (CO2) 0 % 5 % Analog 3 V 5 V - 20 C + 55 C Through Hole IR2x Series
Amphenol SGX Sensortech Air Quality Sensors 19mm 100% volume CO2 Infrared Gas Sensor
Datasheet
2In Stock
Min.: 1
Mult.: 1

Infrared - Analog Carbon Dioxide (CO2) 0 % 100 % Analog 3 V 5 V - 20 C + 55 C Through Hole IR1x Series
Amphenol SGX Sensortech Air Quality Sensors 19mmHydCarInfrGasSen 0-5%/0-100%VTempIC
Datasheet
2In Stock
Min.: 1
Mult.: 1

Infrared - Analog Hydrocarbon 0 % 100 % Analog 3 V 5 V - 20 C + 55 C Through Hole IR1x Series
Amphenol SGX Sensortech Air Quality Sensors Srs 2 19mm 0-2%CO2 0-5%/100%BB IRSensor
Datasheet
22In Stock
Min.: 1
Mult.: 1

Infrared - Analog Carbon Dioxide + Methane 0 % 5 %, 100 % Analog 3 V 5 V - 20 C + 60 C Through Hole IR2x Series
Amphenol SGX Sensortech Air Quality Sensors PellistorPr3.5V/90mA Solid Lg ClsdCanCom
Datasheet
15In Stock
Min.: 1
Mult.: 1

Thermal Conductivity Light Gases (H2, He), CO2, CH4 0 % 100 % Analog 2 V 3.45 V Wire Leads Thermal Conductivity
Amphenol SGX Sensortech Air Quality Sensors 16mm 0-5% vol CO2 InfraGasSenswThermis
Datasheet
3Expected 2026-10-09
Min.: 1
Mult.: 1

Infrared - Analog Carbon Dioxide (CO2) 0 % 5 % Analog 3 V 5 V - 20 C + 55 C Through Hole IR1x Series
Amphenol SGX Sensortech Air Quality Sensors 19mmHydCarInfrGasSen 0-5%/0-100%VIntTher
Datasheet
Non-Stocked Lead-Time 3 Weeks
Min.: 25
Mult.: 25

Infrared - Analog Hydrocarbon 0 % 100 % Analog 3 V 5 V - 20 C + 55 C Through Hole IR1x Series
Amphenol SGX Sensortech Air Quality Sensors 19mm 0-5% CO2 BrB HC IR Sens w Thermisto
Datasheet
Non-Stocked Lead-Time 8 Weeks
Min.: 1
Mult.: 1

Infrared - Analog Carbon Dioxide + Hydrocarbon 0 % 5 % Analog 3 V 5 V - 20 C + 55 C Through Hole IR1x Series
Amphenol SGX Sensortech Air Quality Sensors 19mm0-5%CO2 0-5%/100% HC IR Sens
Datasheet
Non-Stocked Lead-Time 4 Weeks
Min.: 25
Mult.: 25

Infrared - Analog Carbon Dioxide + Hydrocarbon 0 % 5 %, 100 % Analog 3 V 5 V - 20 C + 55 C Through Hole IR1x Series
Amphenol SGX Sensortech Air Quality Sensors 0-100%CH4&CO2IRGsSen BioGasAppsWIntTherm
Datasheet
Non-Stocked Lead-Time 4 Weeks
Min.: 25
Mult.: 25

Infrared - Analog Biogas 0 % 100 % Analog 3 V 5 v - 20 C + 55 C Through Hole IR1x Series
Amphenol SGX Sensortech Air Quality Sensors Srs2 16mm 0 -5% CO2 IR Sens w Thermistor
Datasheet
Non-Stocked Lead-Time 3 Weeks
Min.: 25
Mult.: 25

Infrared - Analog Carbon Dioxide (CO2) 0 % 5 % Analog 3 V 5 V - 20 C + 55 C Through Hole IR2x Series
Amphenol SGX Sensortech Air Quality Sensors Srs2 19mm 0-5% CO2 IR Sens wTempSens IC
Datasheet
Non-Stocked Lead-Time 3 Weeks
Min.: 25
Mult.: 25

Infrared - Analog Carbon Dioxide (CO2) 0 % 5 % Analog 3 V 5 V - 20 C + 55 C Through Hole IR2x Series
Amphenol SGX Sensortech Air Quality Sensors Srs 2 16mm 0-5% CO2 IR SenswTempSens IC
Datasheet
Non-Stocked Lead-Time 3 Weeks
Min.: 25
Mult.: 25

Infrared - Analog Carbon Dioxide (CO2) 0 % 5 % Analog 3 V 5 V - 20 C + 55 C Through Hole IR2x Series
Amphenol SGX Sensortech Air Quality Sensors Srs 2 19mm 0-5%/100% HC IRSenswThermisto
Datasheet
Non-Stocked Lead-Time 3 Weeks
Min.: 25
Mult.: 25

Infrared - Analog Hydrocarbon 0 % 100 % Analog 3 V 5 V - 20 C + 55 C Through Hole IR2x Series
Amphenol SGX Sensortech Air Quality Sensors Srs 2 19mm 0-5%/100% HC IRSenswTempSensI
Datasheet
Non-Stocked Lead-Time 3 Weeks
Min.: 25
Mult.: 25

Infrared - Analog Hydrocarbon 0 % 100 % Analog 3 V 5 V - 20 C + 55 C Through Hole IR2x Series
Amphenol SGX Sensortech Air Quality Sensors Srs2 19mm 0-5%/100% Brdbnd HC IR Sensor
Datasheet
Non-Stocked Lead-Time 3 Weeks
Min.: 25
Mult.: 25

Infrared - Analog Hydrocarbon 0 % 100 % Analog 3 V 5 V - 20 C + 55 C Through Hole IR2x Series
Amphenol SGX Sensortech Air Quality Sensors Srs 2 19mm 0-2%CO2 0-5%/100%HC IRSensor
Datasheet
Non-Stocked Lead-Time 4 Weeks
Min.: 25
Mult.: 25

Infrared - Analog Carbon Dioxide + Methane 0 % 5 %, 100 % Analog 5 V - 20 C + 60 C IR2x Series
Amphenol SGX Sensortech Air Quality Sensors IR Sens Hdfor0-5%CO2 M20 Thrd in AmpCirc
Datasheet
Non-Stocked Lead-Time 4 Weeks
Min.: 25
Mult.: 25

Infrared - Analog Carbon Dioxide (CO2) 0 % 5 % Analog 5 V - 20 C + 60 C 2.5 V Wire IR6xx Hazardous Series
Amphenol SGX Sensortech Air Quality Sensors IR Sens Hdfor0-5%CO2 1/2" Thrd in AmpCir
Datasheet
Non-Stocked Lead-Time 4 Weeks
Min.: 1
Mult.: 1

Infrared - Analog Carbon Dioxide (CO2) 0 % 5 % Analog 5 V - 20 C + 60 C 2.5 V Wire IR6xx Hazardous Series
Amphenol SGX Sensortech Air Quality Sensors IR Sens Hdfor0-5%CO2 3/4" Thrd in AmpCir
Datasheet
Non-Stocked Lead-Time 4 Weeks
Min.: 25
Mult.: 25

Infrared - Analog Carbon Dioxide (CO2) 0 % 5 % Analog 5 V - 20 C + 60 C 2.5 V Wire IR6xx Hazardous Series
Amphenol SGX Sensortech Air Quality Sensors IR Sens Hd 0-5%/100% HC M20 Thrd AmpCirc
Datasheet
Non-Stocked Lead-Time 4 Weeks
Min.: 25
Mult.: 25

Infrared - Analog Hydrocarbon 0 % 100 % Analog 5 V - 20 C + 60 C 2.5 V Wire IR6xx Hazardous Series
Amphenol SGX Sensortech Air Quality Sensors IRSensorHd 0-5%/100% HC 1/2"Thrd AmpCirc
Datasheet
Non-Stocked Lead-Time 4 Weeks
Min.: 25
Mult.: 25

Infrared - Analog Hydrocarbon 0 % 100 % Analog 5 V - 20 C + 60 C 2.5 V Wire IR6xx Hazardous Series