Gas Sensors

Part Number	Description / PDF	Quantity
T6615-5KF Thermometrics (Amphenol Advanced Sensors)	CO2 MODULE 5000PPM FLOW THROUGH	4
T6615 Thermometrics (Amphenol Advanced Sensors)	CO2 MODULE 2000PPM DIFFUSION	6
T8031-5V Thermometrics (Amphenol Advanced Sensors)	CO2 TRANSMITTER INDUCT MOUNT 0-5	7
T6615-50K Thermometrics (Amphenol Advanced Sensors)	CO2 MODULE 50000PPM DIFFUSION	8
T3022-1-5K-5 Thermometrics (Amphenol Advanced Sensors)	T6713 CO2 SENSOR 1.8M CABLE JST	10
T8031 Thermometrics (Amphenol Advanced Sensors)	CO2 TRANSMITTER INDUCT MOUNT 0-1	10
T8031-1M-5V Thermometrics (Amphenol Advanced Sensors)	CO2 TRANSMITTER INDUCT MOUNT 0-5	0
T6615-5K Thermometrics (Amphenol Advanced Sensors)	CO2 MODULE 5000PPM DIFFUSION	41
T3032-2-10K-24-P Thermometrics (Amphenol Advanced Sensors)	INDUSTRIAL CO2 SENSOR, DUAL CHAN	8
T6713 Thermometrics (Amphenol Advanced Sensors)	CO2 MODULE 2000PPM DIFFUSION	95
T6613-C Thermometrics (Amphenol Advanced Sensors)	CO2 MODULE 2000PPM W/GAS PORTS	13
T5100-I Thermometrics (Amphenol Advanced Sensors)	AIRESTAT, ABC LOGIC CO2,CURRENT,	9
T3031-2-2K-24-P Thermometrics (Amphenol Advanced Sensors)	INDUSTRIAL CO2 SENSOR, DUAL CHAN	9
T3022-1-5K-1-MX Thermometrics (Amphenol Advanced Sensors)	T6713 CO2 SENSOR 1.0M CABLE	17
T8200-D Thermometrics (Amphenol Advanced Sensors)	CO2/TEMP SENS WALL MNT DUAL OUT	0
T6613-5KC Thermometrics (Amphenol Advanced Sensors)	CO2 MOD 5000PPM DIFF W/GAS PORTS	0
T8041 Thermometrics (Amphenol Advanced Sensors)	CO2 SENSOR DUCT MOUNT 0-10V OUT	0
T8300-DB Thermometrics (Amphenol Advanced Sensors)	CO2/TEMP SENS DUCT MNT DUAL OUT	0
T6613-5KF Thermometrics (Amphenol Advanced Sensors)	CO2 MODULE 5000PPM FLOW THROUGH	0
T6613-R12 Thermometrics (Amphenol Advanced Sensors)	CO2 MODULE 2000PPM DIFFUSION	9

Gas Sensors

1. Overview

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.

2. Major Types and Functional Classification

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

3. Structure and Components

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)

4. Key Technical Specifications

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)

5. Application Fields

Industrial safety: Fixed gas detection systems
Environmental monitoring: Urban air quality stations
Healthcare: Medical breath analyzers
Smart homes: Combustible gas alarms
Automotive: Cabin air quality management

6. Leading Manufacturers and Products

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

7. Selection Guidelines

Key consideration factors:

Target gas chemical properties
Environmental conditions (temperature/humidity range)
Required detection threshold and repeatability
Power consumption budget
Maintenance accessibility for calibration
Cost vs. lifetime trade-offs

Industry Trends Analysis

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