NDIR method indoor CO2 transmitter

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SenseAir

last updated：Feb 07, 2025

Official site

Achieving high stability and accuracy in CO2 concentration measurement! Maintenance-free, compact, and low-cost CO2 concentration transmitter.

This is a lightweight, compact, maintenance-free, low-cost general-purpose CO2 concentration transmitter that adopts the latest NDIR method. We offer a lineup of CO2-specific "eSENSE" and CO2 + temperature measurement capable "aSENSE." It accurately measures CO2 concentrations in residential environments primarily in the range of 0-2000 ppm or 0-3000 ppm, providing either analog or digital output. The Senseair NDIR method CO2 sensor boasts a cumulative production of over several million units and has been installed in numerous renowned buildings and facilities in Europe and the United States, including the European Parliament, the Kremlin, and Heathrow Airport, many of which are still in operation today. ◆ Indoor CO2 Transmitter Lineup ◆ eSENSE: No display eSENSE-Disp: With display eSENSE-TR: No display, terminals for resistive temperature probe aSENSE: No display aSENSE-Disp: With display aSENSE-RL: No display, relay output aSENSE-Disp-RL: With display, relay output aSENSE-Ind-Disp-RL: With display, relay output, protection rating IP54

Related Link - https://senseair.jp/product/wall-mount

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basic information

●eSENSE / aSENSE Common Operating Principle: NDIR Method Target Gas: CO2 CO2 Concentration Measurement Range: 0–2000ppm Accuracy: ±30ppm ±3% rdg Communication: UART (Modbus) ●eSENSE Dimensions: 100×80×28mm Sensor Expected Lifespan: >15 years Operating Temperature Range: 0–50℃ Operating Humidity Range: 0–95% RH (no condensation) Power Supply: AC/DC 24V, ±20%, 50Hz Response Time (T1/e): 3 minutes, diffusion time Output: OUT1 Analog Output = DC 0–10V (CO2) OUT2 Analog Output = DC 2–10V or 4–20mA (CO2) ●aSENSE Dimensions: 120×82×30mm Sensor Expected Lifespan: >15 years Operating Temperature Range: 0–50℃ Operating Humidity Range: 0–85% RH (no condensation) Power Supply: AC/DC 24V, ±20%, 50–60Hz Power Consumption: Average <1W Response Time (T90): 3 minutes, diffusion time Output: OUT1 Analog Output = DC 0/2–10V or 0/4–20mA (CO2) OUT2 Analog Output = DC 0/2–10V or 0/4–20mA (℃)