SKU: SENS-0874
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TE Connectivity Thermopile Sensor, Infrared, TO-18, CO2 Gas Detection

₹1,229.00 (Inclusive of all taxes)
Out of Stock

This TE Connectivity infrared thermopile sensor is a high-sensitivity detector in a compact TO-18 package, optimized for CO2 gas detection with a 4.26 μm narrow band pass filter. It provides a direct voltage output proportional to incident IR radiation, suitable for integration into NDIR gas sensing systems and contactless temperature measurement applications.

Features

  • Optimized for CO2 detection with a 4.26 μm narrow band pass filter.
  • Very high signal output for improved measurement sensitivity.
  • Includes an accurate internal reference sensor for stable baseline readings.
  • Compact and robust TO-18 metal can package.
  • Fast response time of 22 ± 5 ms for dynamic sensing.

Out of stock

Description

This thermopile sensor from TE Connectivity operates on the principle of converting infrared radiation into a measurable electrical voltage. It is specifically filtered for a 4.26 μm wavelength, aligning with the primary absorption band of carbon dioxide (CO2), making it an ideal detector for Non-Dispersive Infrared (NDIR) gas analyzers. The integrated reference sensor compensates for ambient temperature variations, ensuring measurement accuracy.

The sensor features a fast rise time and a high signal-to-noise ratio, enabling precise detection in applications ranging from indoor air quality monitoring to industrial process control. Its TO-18 package offers a durable, industry-standard form factor for reliable integration into optical assemblies and sensing modules.

Key Features

  • NDIR-Optimized Detector: Features a 4.26 μm narrow band pass filter specifically for CO2 absorption wavelength detection.
  • High Sensitivity & Low Noise: Delivers a very high output signal with a low noise equivalent voltage of 130 nV/√Hz for precise measurements.
  • Integrated Reference Sensor: Includes an accurate on-chip reference element for ambient temperature compensation and baseline stability.
  • Fast Dynamic Response: Offers a rapid rise time of 22 ± 5 ms, suitable for real-time monitoring and control systems.
  • Robust TO-18 Package: Housed in a standard, hermetic TO-18 metal can for mechanical durability and thermal performance.
  • Matched Sensor Resistance: Provides a consistent sensor resistance of 1000 ± 4 Ω for simplified circuit design and signal conditioning.

Applications

  • NDIR-based CO2 monitors for HVAC and indoor air quality systems.
  • Portable and fixed gas analyzers for environmental safety and industrial hygiene.
  • Contactless temperature measurement in controlled industrial processes.
  • Integration into breath analyzers and medical gas sensing equipment.
  • Greenhouse and controlled agricultural atmosphere monitoring.

Technical Specifications

Detection TypeInfrared Thermopile
Primary ApplicationCO2 Gas Detection
Peak Wavelength4.26 μm (Narrow Band Pass)
Noise Equivalent Voltage130 nV/√Hz
Rise Time22 ± 5 ms
Sensor Resistance1000 ± 4 Ω
Package TypeTO-18
Length16 mm
Width7 mm
Weight (approx.)1 g

Frequently Asked Questions

What is the primary application of this thermopile sensor?

This sensor is specifically designed for Non-Dispersive Infrared (NDIR) measurement of carbon dioxide (CO2) gas. Its integrated 4.26 μm narrow band pass filter matches the strong absorption band of CO2, making it ideal for air quality monitors, industrial gas analyzers, and HVAC control systems.

How do I interface with this sensor? What output does it provide?

The sensor provides a low-level voltage output proportional to the incident infrared radiation. It requires external signal conditioning, typically involving a low-noise amplifier and analog-to-digital converter, to process the microvolt-level signal. The matched 1000 Ω sensor resistance simplifies the design of the input stage.

What is the purpose of the integrated reference sensor?

The accurate reference sensor compensates for changes in the ambient temperature of the detector itself. This is critical in NDIR systems to maintain a stable baseline reading, as the thermopile's output is sensitive to its own temperature, ensuring long-term measurement accuracy and stability.

Package Includes

  • 1 x TE Connectivity Thermopile Sensor (TO-18 package)

Additional Information

Weight 0.001 kg
Dimensions 1.6 × 0.7 cm