Air Quality Sensors – Mouser Canada

.hide-partial { max-height: none; } .show-more { display: none; }

SGX-4x Electrochemical Sensors

Amphenol SGX Sensortech SGX-4x Electrochemical Sensors are available in a broad range of sensing types for industrial and commercial gas applications. These air quality sensors allow instrument manufacturers a greater choice when selecting sensors for carbon monoxide (CO), hydrogen sulfide (H₂S), oxygen (O₂), ammonia (NH₃), chlorine (Cl₂), multi-gas nitric oxide (NO), nitrogen dioxide (NO₂), and sulfur dioxide (SO₂). These sensors have a minimum operating temperature of -40°C, -30°C, or -20°C, and a maximum operating temperature of +50°C or +60°C. Amphenol SGX Sensortech SGX-4x Electrochemical Sensors are available in 20mm industrial standard packages and act as drop-in replacements for existing sensor types in this size.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 24

Applied Filters:

Type

Sensor Type

Measuring Range - Min

Measuring Range - Max

Output Type

Supply Voltage - Min

Supply Voltage - Max

Minimum Operating Temperature

Maximum Operating Temperature

Mounting Style

Series

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CAD) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS	Type	Sensor Type	Measuring Range - Min	Measuring Range - Max	Output Type	Supply Voltage - Min	Supply Voltage - Max	Minimum Operating Temperature	Maximum Operating Temperature	Mounting Style	Series
Air Quality Sensors 4 Series Electrochemical Ozone sensor 5ppm SGX-4O3-5 Amphenol SGX Sensortech 1: $162.17 2In Stock New Product	Mfr. Part # SGX-4O3-5 Mouser Part # 523-SGX-4O3-5 New Product	Amphenol SGX Sensortech	Air Quality Sensors 4 Series Electrochemical Ozone sensor 5ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	2In Stock	$162.17 $131.77 $126.24 $121.00 View $119.65 $117.14 Quote	Min.: 1 Mult.: 1		Electrochemical 4-series	Ozone	0 PPM	5 PPM	Analog			- 20 C	+ 50 C		Electro-Chemical
Air Quality Sensors 4 Series SO2 Gas Sensor - 20ppm SGX-4SO2 Amphenol SGX Sensortech 1: $125.68 29In Stock	Mfr. Part # SGX-4SO2 Mouser Part # 523-SGX-4SO2	Amphenol SGX Sensortech	Air Quality Sensors 4 Series SO2 Gas Sensor - 20ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	29In Stock	$125.68 $119.46 $117.16 $115.59 View $113.08 $112.77 Quote	Min.: 1 Mult.: 1		Electrochemical 4-series	Sulfur Dioxide	0 PPM	20 PPM	Analog			- 30 C	+ 50 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 Series CO Sensor - 1,000ppm SGX-4CO-LC Amphenol SGX Sensortech 1: $68.75 8In Stock	Mfr. Part # SGX-4CO-LC Mouser Part # 523-SGX-4CO-LC	Amphenol SGX Sensortech	Air Quality Sensors 4 Series CO Sensor - 1,000ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	8In Stock	$68.75 $57.96 $42.64 $41.20 View Quote	Min.: 1 Mult.: 1		Electrochemical 4-series	Carbon Monoxide	0 PPM	1000 PPM	Analog			- 30 C	+ 50 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 Series High Conc CO Sensor - 10000ppm SGX-4CO-10K Amphenol SGX Sensortech 1: $132.55 6In Stock	Mfr. Part # SGX-4CO-10K Mouser Part # 523-SGX-4CO-10K	Amphenol SGX Sensortech	Air Quality Sensors 4 Series High Conc CO Sensor - 10000ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	6In Stock	$132.55 $111.82 $97.53 $88.59 View $87.52 $83.28 Quote	Min.: 1 Mult.: 1		Electrochemical 4-series	Carbon Monoxide	0 PPM	10000 PPM	Analog			- 30 C	+ 50 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 Series Ammonia Sensor - 300ppm SGX-4NH3-300 Amphenol SGX Sensortech 1: $196.52 1In Stock	Mfr. Part # SGX-4NH3-300 Mouser Part # 523-SGX-4NH3-300	Amphenol SGX Sensortech	Air Quality Sensors 4 Series Ammonia Sensor - 300ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	1In Stock	$196.52 $159.81 $124.85 $120.01	Min.: 1 Mult.: 1		Electrochemical 4-series	Ammonia	0 PPM	300 PPM	Analog			- 40 C	+ 50 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 Series NO2 Sensor 2 Electrode - 20ppm SGX-4NO2-2E Amphenol SGX Sensortech 1: $99.27 6In Stock	Mfr. Part # SGX-4NO2-2E Mouser Part # 523-SGX-4NO2-2E	Amphenol SGX Sensortech	Air Quality Sensors 4 Series NO2 Sensor 2 Electrode - 20ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	6In Stock	$99.27 $97.01 $70.50 $65.45 View $63.55 $60.22 Quote	Min.: 1 Mult.: 1		Electrochemical 4-series	Nitrogen Dioxide	0 PPM	20 PPM	Analog			- 30 C	+ 50 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 Series Nitrogen Dioxide Sensor-30ppm SGX-4NO2 Amphenol SGX Sensortech 1: $64.20 27In Stock	Mfr. Part # SGX-4NO2 Mouser Part # 523-SGX-4NO2	Amphenol SGX Sensortech	Air Quality Sensors 4 Series Nitrogen Dioxide Sensor-30ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	27In Stock	$64.20 $59.13 $56.28 $55.04 $52.85	Min.: 1 Mult.: 1		Electrochemical 4-series	Nitrogen Dioxide	0 PPM	30 PPM	Analog		1.3 V	- 30 C	+ 50 C	Through Hole	Electro-Chemical
Air Quality Sensors MEMS Pellistor Gas Sensor, 0-5% volume Flammable Gases, Hazardous Area safe (ATEX certified), Flameproof enclosure Sensing(EX-da certified), with pins MP7227-R Amphenol SGX Sensortech 1: $80.19 17In Stock	Mfr. Part # MP7227-R Mouser Part # 523-MP7227-R	Amphenol SGX Sensortech	Air Quality Sensors MEMS Pellistor Gas Sensor, 0-5% volume Flammable Gases, Hazardous Area safe (ATEX certified), Flameproof enclosure Sensing(EX-da certified), with pins Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	17In Stock	$80.19 $72.92 $68.11 $68.10 View $68.07 $64.99 Quote	Min.: 1 Mult.: 1		MEMS Pellistor	Flammable	0 %	5 %	Analog	1.6 V	3.2 V	- 20 C	+ 60 C	PCB Mount	MPEL
Air Quality Sensors 4 Series ETO Gas Sensor 20ppm SGX-4ETO Amphenol SGX Sensortech 1: $154.76 14In Stock	Mfr. Part # SGX-4ETO Mouser Part # 523-SGX-4ETO	Amphenol SGX Sensortech	Air Quality Sensors 4 Series ETO Gas Sensor 20ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	14In Stock	$154.76 $134.01 $122.99 $122.14 View $119.72 $118.09	Min.: 1 Mult.: 1		Electrochemical 4-series	Ethylene Oxide	0 PPM	20 PPM	Analog			- 20 C	+ 50 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 Series Electrochemical Bromine 5ppm SGX-BR2-5 Amphenol SGX Sensortech 1: $378.32 23In Stock	Mfr. Part # SGX-BR2-5 Mouser Part # 523-SGX-BR2-5	Amphenol SGX Sensortech	Air Quality Sensors 4 Series Electrochemical Bromine 5ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	23In Stock	$378.32 $378.26 $378.23 Quote Quote	Min.: 1 Mult.: 1		Gas Sensor	Multi-Gas						- 20 C	+ 40 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 Series Electrochemical Fluorine 5ppm SGX-F2-5 Amphenol SGX Sensortech 1: $393.34 9In Stock	Mfr. Part # SGX-F2-5 Mouser Part # 523-SGX-F2-5	Amphenol SGX Sensortech	Air Quality Sensors 4 Series Electrochemical Fluorine 5ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	9In Stock	$393.34 $368.88 $323.04 Quote Quote	Min.: 1 Mult.: 1		Electrochemical 4-series	Fluorine	0 PPM	5 PPM	Analog			- 20 C	+ 40 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 Series Electrochemical Hydrogen Fluoride 10ppm SGX-HF-10 Amphenol SGX Sensortech 1: $264.82 6In Stock	Mfr. Part # SGX-HF-10 Mouser Part # 523-SGX-HF-10	Amphenol SGX Sensortech	Air Quality Sensors 4 Series Electrochemical Hydrogen Fluoride 10ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	6In Stock	$264.82 $224.11 $213.41 $211.81 View Quote	Min.: 1 Mult.: 1		Electrochemical 4-series	Hydrogen Fluoride	0 PPM	10 PPM	Analog			- 20 C	+ 55 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 Series Ammonia Sensor - 1000ppm SGX-4NH3-1000 Amphenol SGX Sensortech 1: $140.86 33In Stock	Mfr. Part # SGX-4NH3-1000 Mouser Part # 523-SGX-4NH3-1000	Amphenol SGX Sensortech	Air Quality Sensors 4 Series Ammonia Sensor - 1000ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	33In Stock	$140.86 $130.75 $119.38 $107.12 View Quote	Min.: 1 Mult.: 1		Electrochemical 4-series	Ammonia	0 PPM	1000 PPM	Analog			- 40 C	+ 50 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 Series CL2 Gas Sensor - 10ppm SGX-4CL2 Amphenol SGX Sensortech 1: $180.59 5In Stock	Mfr. Part # SGX-4CL2 Mouser Part # 523-SGX-4CL2	Amphenol SGX Sensortech	Air Quality Sensors 4 Series CL2 Gas Sensor - 10ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	5In Stock	$180.59 $165.73 $124.85 $124.56 $120.01	Min.: 1 Mult.: 1		Electrochemical 4-series	Chlorine	0 PPM	10 PPM	Analog			- 20 C	+ 50 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 Series Dual-Tox Sensor-500ppm/200ppm SGX-4DT Amphenol SGX Sensortech 1: $115.86 1In Stock	Mfr. Part # SGX-4DT Mouser Part # 523-SGX-4DT	Amphenol SGX Sensortech	Air Quality Sensors 4 Series Dual-Tox Sensor-500ppm/200ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	1In Stock	$115.86 $97.33 $73.08 $72.06 View Quote	Min.: 1 Mult.: 1		Electrochemical 4-series	Carbon Monoxide + Hydrogen Sulfide	0 PPM	500 PPM, 200 PPM	Analog			- 30 C	+ 50 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 Series H2S Sensor - 100ppm SGX-4H2S-100 Amphenol SGX Sensortech 1: $55.83 6In Stock 20Expected 2026-11-26	Mfr. Part # SGX-4H2S-100 Mouser Part # 523-SGX-4H2S-100	Amphenol SGX Sensortech	Air Quality Sensors 4 Series H2S Sensor - 100ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	6In Stock 20Expected 2026-11-26	$55.83 $51.31	Min.: 1 Mult.: 1		Electrochemical 4-series	Hydrogen Sulfide	0 PPM	100 PPM	Analog			- 30 C	+ 50 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 Series Electrochemical Hydrogen Sulfide sensor 300ppm SGX-4H2S-300 Amphenol SGX Sensortech 1: $67.94 2In Stock	Mfr. Part # SGX-4H2S-300 Mouser Part # 523-SGX-4H2S-300	Amphenol SGX Sensortech	Air Quality Sensors 4 Series Electrochemical Hydrogen Sulfide sensor 300ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	2In Stock	$67.94 $62.57 $60.58 $58.18 View $56.55 $51.96 Quote	Min.: 1 Mult.: 1		Electro-Chemical	H2S	0 PPM	300 PPM	Analog			- 30 C	+ 50 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 Series NO Gas Sensor - 250ppm SGX-4NO-250 Amphenol SGX Sensortech 1: $145.53 8In Stock	Mfr. Part # SGX-4NO-250 Mouser Part # 523-SGX-4NO-250	Amphenol SGX Sensortech	Air Quality Sensors 4 Series NO Gas Sensor - 250ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	8In Stock	$145.53 $135.12 $131.24 $126.60 View $123.42 $120.01	Min.: 1 Mult.: 1		Electrochemical 4-series	Nitric Oxide	0 PPM	250 PPM	Analog			- 30 C	+ 50 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 Series Electrochemical Hydrogen Chloride 30ppm SGX-HCL-30 Amphenol SGX Sensortech 1: $439.56 2In Stock	Mfr. Part # SGX-HCL-30 Mouser Part # 523-SGX-HCL-30	Amphenol SGX Sensortech	Air Quality Sensors 4 Series Electrochemical Hydrogen Chloride 30ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	2In Stock	$439.56 $412.63 $401.93 Quote Quote	Min.: 1 Mult.: 1		Gas Sensor	Multi-Gas						- 20 C	+ 40 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 ser O2 sens 0-25% 3 year life SGX-4OX-EL Amphenol SGX Sensortech 1: $86.82 18In Stock	Mfr. Part # SGX-4OX-EL Mouser Part # 523-SGX-4OX-EL	Amphenol SGX Sensortech	Air Quality Sensors 4 ser O2 sens 0-25% 3 year life Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	18In Stock	$86.82 $80.18 $77.70 $74.74 View $72.71 $68.36 Quote	Min.: 1 Mult.: 1	No	Electrochemical 4-series	Oxygen	0 %	25 %	Analog			- 30 C	+ 50 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 Series Oxygen Sensor 25% 2 yr life SGX-4OX Amphenol SGX Sensortech 1: $53.71 16In Stock 140On Order	Mfr. Part # SGX-4OX Mouser Part # 523-SGX-4OX	Amphenol SGX Sensortech	Air Quality Sensors 4 Series Oxygen Sensor 25% 2 yr life Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	16In Stock 140On Order	$53.71	Min.: 1 Mult.: 1	No	Electrochemical 4-series	Oxygen	0 %	25 %	Analog			- 30 C	+ 50 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 Series Ammonia Sensor - 100ppm SGX-4NH3-100 Amphenol SGX Sensortech 1: $113.85 45Expected 2026-11-16	Mfr. Part # SGX-4NH3-100 Mouser Part # 523-SGX-4NH3-100	Amphenol SGX Sensortech	Air Quality Sensors 4 Series Ammonia Sensor - 100ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	45Expected 2026-11-16	$113.85 $105.44 $102.30 $98.55 View $95.99 $93.63 Quote	Min.: 1 Mult.: 1		Electrochemical 4-series	Ammonia	0 PPM	100 PPM	Analog			- 40 C	+ 50 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 Series Lead free O2 Sensor,>5years SGX-4OX-ROHS Amphenol SGX Sensortech 1: $90.37 9Expected 2026-12-24	Mfr. Part # SGX-4OX-ROHS Mouser Part # 523-SGX-4OX-ROHS	Amphenol SGX Sensortech	Air Quality Sensors 4 Series Lead free O2 Sensor,>5years Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	9Expected 2026-12-24	$90.37 $83.43 $79.79 $73.57 View $72.43 $67.36 Quote	Min.: 1 Mult.: 1		Electrochemical 4-series	Oxygen	0 %	25 %	Analog			- 40 C	+ 60 C	Through Hole	Electro-Chemical
Air Quality Sensors 4 Series CO Sensor 1,000ppm SGX-4CO Amphenol SGX Sensortech 1: $57.79 10Expected 2026-12-24	Mfr. Part # SGX-4CO Mouser Part # 523-SGX-4CO	Amphenol SGX Sensortech	Air Quality Sensors 4 Series CO Sensor 1,000ppm Learn More about Amphenol SGX Sensortech sgx 4x sensors	Datasheet	10Expected 2026-12-24	$57.79 $52.78 $49.68 $48.27 View $47.46 $46.51 Quote	Min.: 1 Mult.: 1		Electrochemical 4-series	Carbon Monoxide	0 PPM	2000 PPM	Analog			- 30 C	+ 50 C	Through Hole	Electro-Chemical

SGX-4x Electrochemical Sensors

Applied Filters:

Mouser®

Company

Resources

Support

Share This

SGX-4x Electrochemical Sensors

Applied Filters: