NDIR Gas Sensor

NDIR Gas Sensor

NDIR Gas Sensor

ESE-IR-100M infrared gas sensor is mainly composed of infrared correlation filter technology (GFC) and self-designed long optical path gas absorption cell (L-Cell), wavelength filter, infrared detector and high-precision signal processing circuit to complete the gas Quantitative analysis in the infrared band. The sensor has the characteristics of high precision, good stability and fast response time.The product is mainly used in the following applications:

☑  Air quality testing;

☑  Industrial process gas analysis, etc.

 

When the infrared light passes through the gas cell to be measured, these gas molecules absorb the infrared light of a specific wavelength, and the absorption relationship obeys the Lambert-Beer absorption law. By measuring the light intensity of the absorption window and the non-absorption window, the concentration of the gas to be measured can be calculated. Imported infrared light source provides highly stable infrared light, which can meet the gas measurement of infrared gas absorption cell; highly sensitive detector Cooperate with highly customized two filters with strong selectivity, select specific wavelength light to irradiate to the detector, so as to output voltage waveform with concentration signal, provide microprocessor for collection, calculation and calibration, and obtain concentration signal.   ndir gas sensor Specifications: 
Measuring principle Infrared absorption (NDIR)
measuring gas CO, CO2, CH4
Measurement range (0~10/50/500/2000) ppm, other ranges can be customized.
Sample gas flow 1L/min±10%
Response time ≤60s
Indication error ≤2%FS
Drift ≤±1%FS/24h
Warm-up time ≤60min
Output Interface RS-232/RS-485/4-20mA
 

Freatures:

☑  Infrared correlation filter technology (GFC) and long optical path gas cell (L-Cell), with the ability to detect ultra-low gas concentrations.

☑   Low-temperature cooling infrared detector, low drift, high precision, low power consumption, fast response.

☑   High-performance infrared light source, long service life, special structure design to effectively avoid the impact of vibration.

☑  Internally self-tuningThe PID algorithm controls the temperature with high precision.

☑   The light source, detector, core circuit, etc. adopt modular design, with high reliability, good scalability and easy maintenance.

☑   Standalone gas detection module for easy integration into any detection system or control system.

☑   The dense-flow double detector with high sensitivity and reliability adopts the protection block of infrared radiation mode to detect the absorption signal of the gas under test.Compensation is less affected by external environmental factors than the single-channel measurement scheme, and the result is more stable without frequent calibration.

☑   Output signal: RS-232/RS-485/4-20mA optional

The measuring range can be customized according to customer needs, and the gas pool heating function is optional.

 

NDIR (Non-Dispersive Infrared) gas sensor is a type of gas sensor that uses infrared light to measure the concentration of specific gases in a gas sample. It is based on the principle of infrared absorption spectroscopy.

Here are the key features and components of an NDIR gas sensor:

  1. Infrared Light Source: The sensor includes an infrared light source that emits light at specific wavelengths in the infrared range. The wavelengths are chosen to correspond to the absorption bands of the target gas molecules.
  2. Gas Chamber: The gas chamber or sample cell is a space where the gas sample interacts with the infrared light. It is designed to optimize the path length and interaction between the gas molecules and the infrared light.
  3. Optical Components: The sensor incorporates optical components such as mirrors, lenses, and filters to direct and focus the infrared light onto the gas sample and then onto the detector. These components are designed to maximize the sensitivity and accuracy of the measurements.
  4. Detector: A detector is used to measure the intensity of the infrared light before and after it passes through the gas sample. The absorption of infrared light by the target gas molecules leads to a reduction in the transmitted light intensity. The detector detects this reduction and converts it into an electrical signal.
  5. Signal Processing and Data Analysis: The electrical signal from the detector is processed and analyzed by the sensor’s electronics. The sensor may include calibration algorithms and temperature compensation to ensure accurate and reliable gas concentration measurements.
  6. Data Output: The sensor provides an output signal that represents the gas concentration. This output can be in the form of an analog voltage, digital signal, or communication protocol

NDIR gas sensors are commonly used for the detection and measurement of gases such as carbon dioxide (CO2), carbon monoxide (CO), methane (CH4), and various hydrocarbons. They find applications in industrial safety, indoor air quality monitoring, combustion analysis, and environmental monitoring. NDIR sensors offer high sensitivity, stability, and selectivity, making them suitable for a wide range of gas detection and monitoring applications.

When the infrared light passes through the gas cell to be measured, these gas molecules absorb the infrared light of a specific wavelength, and the absorption relationship obeys the Lambert-Beer absorption law. By measuring the light intensity of the absorption window and the non-absorption window, the concentration of the gas to be measured can be calculated.

Imported infrared light source provides highly stable infrared light, which can meet the gas measurement of infrared gas absorption cell; highly sensitive detector Cooperate with highly customized two filters with strong selectivity, select specific wavelength light to irradiate to the detector, so as to output voltage waveform with concentration signal, provide microprocessor for collection, calculation and calibration, and obtain concentration signal.

 

ndir gas sensor

Specifications: 

Measuring principle Infrared absorption (NDIR)
measuring gas CO, CO2, CH4
Measurement range (0~10/50/500/2000) ppm, other ranges can be customized.
Sample gas flow 1L/min±10%
Response time ≤60s
Indication error ≤2%FS
Drift ≤±1%FS/24h
Warm-up time ≤60min
Output Interface RS-232/RS-485/4-20mA

 

Measuring carbon dioxide (CO2) is important for understanding the role it plays in the environment and its effect on climate change. CO2 is a major component of Earth’s atmosphere, and it traps heat like a blanket, causing global temperatures to rise. Too m uch CO2 can lead to drastic changes in our weather patterns and ecosystems, so monitoring its levels is essential for predicting future climate conditions. Additionally, measuring CO2 can help us better understand our impact on the environment and make informed decisions about how to reduce emissions and slow down down down down down global warming. By analyzing CO2 data over time, we can develop strategies to mitigate the effects of climate change and ensure a sustainable future.

Before industrialization, the global average annual atmospheric carbon dioxide concentration was 278ppm (1ppm is one part per million). In 2012, the global annual average atmospheric carbon dioxide concentration was 393.1ppm. By April 2014 , the monthly average carbon dioxide concentration in the northern hemisphere atmosphere exceeded 400ppm for the first time. . 2. Global climate warming, the continuous aggravation of the atmospheric greenhouse effect leads to global climate warming, resulting in a series of global climate problems that cannot be predicted by today’s science. According to the International Climate Change Economics Report, if human beings maintain the current way of life, by 2100, there will be a 50% chance that the global average temperature will rise by 4°C.

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