| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
Thermometrics (Amphenol Advanced Sensors) |
INDUSTRIAL CO2 SENSOR, DUAL CHAN |
3 |
|
 |
City Technology |
MINI NO2 3E 50 TRANSMITTER BOARD |
3 |
|
 |
Comet America |
CO2 TRANSMITTER WITH 4-20MA |
20 |
|
 |
KEMET |
GAS DETECTOR, ANALOG TO-39, GAS, |
9 |
|
 |
Spec Sensors |
DGS-IAQ DIGITAL GAS SENSOR MODUL |
36 |
|
 |
Amphenol |
4 SERIES OXYGEN SENSOR 0-25% 2 Y |
125 |
|
 |
Sensirion |
AIR QUALITY GAS SENSOR LOW POWER |
5444 |
|
 |
City Technology |
MINI NH3 3E 100 SE TRANSMITTER |
0 |
|
 |
ScioSense |
CCS811B-JOPR5K LGA10 LF T&R |
0 |
|
 |
Amphenol |
4.25V -VQ49 PELLISTOR IN A VQ500 |
37 |
|
 |
Thermometrics (Amphenol Advanced Sensors) |
INDUSTRIAL CO2 SENSOR, DUAL CHAN |
5 |
|
 |
Amphenol |
VQ5 PELLISTOR, VQ600 HEAD, METRI |
0 |
|
 |
Thermometrics (Amphenol Advanced Sensors) |
CO2 TRANSMITTER INDUCT MOUNT 0-1 |
0 |
|
 |
Spec Sensors |
SENS GAS HYD SULF ANALG CUR MOD |
69 |
|
 |
Spec Sensors |
SENSOR GAS CO ANALOG CUR MOD |
67 |
|
 |
Thermometrics (Amphenol Advanced Sensors) |
CO2 MODULE W/HEADER FOR AAS-AQS- |
3 |
|
 |
Amphenol |
MINI LOW POWER FLAMMABLE GAS SEN |
21 |
|
 |
Amphenol |
VQ3 PELLISTOR, VQ600 HEAD, METRI |
0 |
|
 |
Renesas Electronics America |
TVOC IAQ INTEGRATED SENSOR |
0 |
|
 |
Spec Sensors |
SENSOR GAS ALCOHOL ANALG CUR MOD |
0 |
|
Gas sensors are detection devices that identify and measure gas concentrations in the environment. They convert chemical interactions with gas molecules into electrical signals for quantitative analysis. These sensors play a critical role in industrial safety, environmental monitoring, healthcare, and smart home systems by preventing gas leaks, ensuring air quality, and enabling process control.
| Type | Functional Features | Application Examples |
|---|---|---|
| Electrochemical | High accuracy, stable baseline, requires oxygen | CO detectors, O2 monitors |
| Semiconductor | Low cost, broad detection range, temperature-dependent | Indoor air quality sensors |
| Catalytic Combustion | Explosive gas detection, requires periodic calibration | Industrial methane detectors |
| Infrared (IR) | Non-contact measurement, high selectivity | CO2 HVAC monitoring |
| Photoionization (PID) | VOC detection at ppm levels, UV lamp required | Environmental pollution monitoring |
A typical gas sensor consists of: - Sensing element (metal oxide/electrolyte membrane) - Signal conditioning circuit (amplifier, ADC) - Housing with gas inlet ports - Temperature/humidity compensation module - Communication interface (UART/I2C)
| Parameter | Description |
|---|---|
| Detection Range | Measurable gas concentration span (ppm to %LEL) |
| Sensitivity | Signal change per gas concentration unit (mV/ppm) |
| Response Time | T90 response speed (3-300 seconds) |
| Accuracy | Measurement error margin ( 2-10%) |
| Operating Temperature | Functional range (-20 C to +50 C typical) |
| Long-term Stability | Drift specification (5-15% per year) |
| Manufacturer | Product Series | Key Features |
|---|---|---|
| Honeywell | XNX Universal Transmitter | Dual-sensor redundancy |
| Figaro Engineering | TGS2600 | Low-power VOC detection |
| Membrapor | Toxic Gas Sensors | Eletrochemical cells for Cl2 |
| Senseair | K-30 CO2 Module | NDIR technology, 30ppm accuracy |
| AMS (Austria) | ENS160 MOX Sensor | AI-based gas discrimination |
Key consideration factors:
Emerging development trends include: - Miniaturization through MEMS technology - Multi-gas detection using AI pattern recognition - Wireless self-powered IoT sensor nodes - Enhanced selectivity via nanomaterial coatings - Reduced cross-sensitivity through hybrid sensing methods