Gas Sensors

Target Compound Detection and Sensing Theory

Select your detector according to the specific target gases present in your operating environment. Resistance sensor and semiconductor gas sensor designs detect combustible mixtures such as smoke, LPG, butane, hydrogen, and methane. For indoor atmospheric control, a dedicated voc sensor monitors total volatile organic compounds and formaldehyde emissions from manufacturing processes. A co2 sensor evaluates ventilation efficiency by tracking carbon dioxide concentrations across occupied workspaces.

• Semiconductor Gas Sensor: Detects combustible mixtures including methane, butane, and ethanol.
• Resistance Sensor: Flags hazardous gas leaks, carbon monoxide, and smoke plumes.
• Optical and NDIR Modules: Tracks carbon dioxide without cross-sensitivity from ambient solvent vapors.

Interface Options and Operating Voltage

Control architecture determines the signal type your host controller requires. Modules provide analog outputs for raw resistive voltage division, direct digital threshold switching, or serial communication. An I2C communication interface simplifies wiring on crowded backplanes by streaming multi-parameter data over shared serial lines. Check board ratings before wiring, as units operate on 3.3 V, 5V DC, or wide ranges such as 2.4-5.5V.

• I2C Digital Output: Delivers calibrated data directly to microcontrollers and industrial PLCs.
• Analog and Digital Logic: Provides direct trip-point signals alongside raw voltage outputs for custom ADC scaling.
• Arduino Compatibility: Speeds bench testing and firmware development for rapid prototype validation.

Multi-Parameter Integration and Module Construction

Cabinet space and power budgets often require consolidating environmental sensors into a compact footprint. Combined air quality sensor assemblies integrate temperature, humidity, pressure, and gas detection on a single board, drawing as little as 1 W of dissipation power. Packages come housed in metal, polymer, or composite mixture substrates depending on mechanical protection and thermal exposure demands.

• SCD30 Module: Measures carbon dioxide from 400-5000 ppm with integrated relative humidity and temperature sensing.
• Extended Humidity Span: Selected metal-cased modules measure 0-100% RH with an accuracy of ±1.5% RH or ±3 %RH.
• Multi-Pixel Arrays: Units like SGP41 monitor TVOC, eCO2, and formaldehyde simultaneously.