Technical Specifications
The document outlines the technical specifications for the NO2-AE Nitrogen Dioxide Sensor, designed for high concentration detection. Key specifications include sensitivity, response time, zero current, resolution, range, linearity, overgas range, zero drift, sensitivity drift, and operating life. The sensor's performance is measured at various temperatures (-20°C and 40°C) and includes cross-sensitivity to other gases such as CO, NO, SO2, Cl2, H2, and H2S.
Performance
The sensor's performance is characterized by a response time (t90) of less than 40 seconds from zero to 10 ppm NO2, with a load resistor of 33Ω for optimal noise reduction. The sensor maintains a stable response to a 10-minute gas pulse and has a performance warranty limit of 200 ppm.
Lifetime
The sensor is warranted for 12 months, with an expected operating life until 80% of the original signal is maintained. Sensitivity drift and zero drift are minimal, ensuring consistent performance over time.
Environmental Conditions
The sensor operates effectively within a temperature range of -20°C to 50°C, a pressure range of 80 to 120 kPa, and a humidity range of 15 to 90% RH. It should be stored in a sealed pot at temperatures between 3 to 20°C.
Physical Dimensions
The sensor has a diameter of 20.2 mm and a height of 16.5 mm, with a weight of less than 6 grams.
Cross Sensitivity
The sensor's cross-sensitivity to other gases is specified, with minimal interference from CO, NO, SO2, Cl2, H2, and H2S.
Figures and Data
Figures in the document illustrate the sensor's linearity and response profile. Figure 2 shows the variation in sensitivity at increasing NO2 concentrations, while Figure 3 depicts the response profile for a typical sensor batch.
Disclaimer
The document includes a disclaimer stating that specifications are subject to change without notice and that Alphasense Ltd accepts no liability for any consequential losses or damages resulting from the use of the document.
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