KEMET QGC analog pyroelectric infrared gas sensors

KEMET’s QGC thin film pyroelectric gas sensors can be reduced in physical size and still provide high sensitivity with fast frequency operation, enabling this highly stable 1 to 4 element sensor in a TO39 package.The sensor element is built into a low noise circuit that has an internal CMOS operational amplifier with a 10 GO feedback resistor outputting a voltage signal centred around half the supply rail.

Evaluation kit

Includes USEQGCDAC82L00 dual channel CO₂ sensor , IR emitter (with reflector and sapphire window),  brass gas cell (5 cm), PCB with microcontroller and ADC, 9 V power supply, micro USB cable and software CD. PCB enables adjustment of 2nd stage amplification, sampling/ filtering parameters, followed by analogue-to-digital conversion with USB connection to a PC.

Features

• Fast, stable response over a wide operating frequency range
• 1, 2, or 4 sensor elements in one package
• TO39 package
• Analog output
• Integrated op amp

Applications

• Gas and gas flues
• HVAC (refrigerant or CO₂-driven ventilation system)
• Industrial process and safety
• Medical capnography and anesthesia
• Handheld breath analysis and breath rate measurement
• Breath actuated dispenser
• Automotive cabin air quality
• Exhaust (CO₂ content)
• Home and building technology
• Environmental monitoring (ambient CO₂ level)
• Pollution air quality in home, office and car(excessive CO₂ level)