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Alphasense Ltd alphasense no2 a43f sensors
Alphasense No2 A43f Sensors, supplied by Alphasense Ltd, used in various techniques. Bioz Stars score: 86/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/no2-a43f/a43f+no2/10__1016_slash_j__snb__2025__138859-54-8-8
Average 86 stars, based on 1 article reviews
alphasense no2 a43f sensors - by Bioz Stars, 2026-09
86/100 stars

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Article Title: A Low-Cost Sensor System Installed in Buses to Monitor Air Quality in Cities
Article Snippet: Although this work only focuses on the measurement of PM, two electrochemical four-electrode gas sensors from Alphasense were also installed to monitor the concentrations of CO (CO-B4, Alphasense) and NO 2 (NO2-A43F, Alphasense).

Article Title: Long-term, continuous air quality monitoring in a cross-sectional study of three UK non-domestic buildings
Article Snippet: Variable Sensor Method Comparison to reference instrument (N=4) Inter-comparison (N=15) Carbon Dioxide (CO2) E+E Non-Dispersive Infra-Red (NDIR) NA CV = 2% R2 > 0.98 RMSE = 11 ppm Particulate Matter (PM1, PM2.5, PM10) Alphasense OPC-N2 Optical Particle Counter (OPC) 0.38 – 17um PM2.5 (<12 μg/m3) R2 = 0.58-0.77 RMSE = 2.1 μg/m3 MBE = 0.7 μg/m3 CV = 14% R2 =0.92 RMSE = 2.1 μg/m3 MBE = -0.1 μg/m3 PM2.5 (<85% RH) R2 = 0.75-0.86 RMSE = 6.8 μg/m3 MBE = 4.0 μg/m3 CV = 15% R2 = 0.92 RMSE = 2.4 μg/m3 MBE = 0.1 μg/m3 PM10 (ALL) R2 = 0.52-0.83 RMSE = 12.6 μg/m3 MBE = 7.0 μg/m3 CV = 8% R2 = 0.52 RMSE = 3.8 μg/m3 MBE = 0.31 μg/m3 Nitrogen dioxide (NO2) Alphasense NO2-A43F Eltectrochemical R2 = 0.69-0.81 RMSE = 3.5 ppb MBE = 0.5 ppb CV = 7% R2 > 0.89 RMSE = 3.3 ppb MBE = 0.8 ppb Total Volatile Organic Compounds (TVOCs) Alphasense PID-AH2 Photoionization detector (PID–Isobutylene) NA CV = 24% R2 > 0.31 Mean = 0.59 RMSE = 29 ppb * Temperature and relative humidity sensors have stated accuracies of +/- 0.4oC and of +/- 4%.

Article Title: Secure and Trusted Crowdsensing for Outdoor Air Quality Monitoring: State of the Art and Perspectives
Article Snippet: [ ] , IoT devices , NO 2 , PM, personal exposure , Alphasense CO-A4, NO2-A43F and OX-A431 (Alphasense Ltd., Essex, UK) , Web-based visualization, prediction , Participatory.

Article Title: Evaluating the efficacy of machine learning in calibrating low-cost sensors
Article Snippet: Recent studies show that the employment of Alphasense OPC-N3 and NO2-A43F sensors in indoor environments proves to improve data accuracy considerably; hereby, random forest and SVR models are addressed [5].


Article Title: Standardized Indoor Air Quality Assessments as a Tool to Prepare Heritage Guardians for Changing Preservation Conditions due to Climate Change
Article Snippet: Concentrations of NO2 and O3 were collected with NO2-A43F and OX- A431 sensors (Alphasense, Essex, UK).

Article Title: A Distributed IoT Air Quality Measurement System for High-Risk Workplace Safety Enhancement
Article Snippet: NO 2 , Alphasense NO2-A43F , 0–20 ppm , 175–500 nA/ppm , Electrochemical , Sensor Node/Gas Analyzer.



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Comparison of BEACO 2 N NO 2 sensor calibration performance to other published studies at colocated sites.

Journal: Environmental Science & Technology

Article Title: A Scalable Calibration Method for Enhanced Accuracy in Dense Air Quality Monitoring Networks

doi: 10.1021/acs.est.4c08855

Figure Lengend Snippet: Comparison of BEACO 2 N NO 2 sensor calibration performance to other published studies at colocated sites.

Article Snippet: Buehler et al. (2021) , SEARCH , Alphasense NO2-A43F , Baltimore, MD , 28 , 60 , NR , 0.77 , 5.3 , 3.7 , 0.8.

Techniques: Comparison

General information about the different LCSs employed for the EQ-OX system. For each measured quantity, the table reports the sensor brand/model, its typology, and price, together with the range, resolution, response time, and accuracy declared by the manufacturer (if available).

Journal: Sensors (Basel, Switzerland)

Article Title: Environmental Quality bOX (EQ-OX): A Portable Device Embedding Low-Cost Sensors Tailored for Comprehensive Indoor Environmental Quality Monitoring

doi: 10.3390/s24072176

Figure Lengend Snippet: General information about the different LCSs employed for the EQ-OX system. For each measured quantity, the table reports the sensor brand/model, its typology, and price, together with the range, resolution, response time, and accuracy declared by the manufacturer (if available).

Article Snippet: Nitrogen dioxide , Alphasense NO2-A43F , https://ametekcdn.azureedge.net/mediafiles/project/oneweb/oneweb/alphasense/products/datasheets/alphasense_no2-a43f_datasheet_en_1.pdf?revision:20f798fc-5420-4067-81a6-68345d23e76d.

Techniques:

General information about the calibrated instrumentation used to verify the behavior of EQ-OX sensors: for each measured quantity, the table reports instrument brand/model, sensor typology, and price, together with the range, resolution, and accuracy of the measurement declared by the manufacturers.

Journal: Sensors (Basel, Switzerland)

Article Title: Environmental Quality bOX (EQ-OX): A Portable Device Embedding Low-Cost Sensors Tailored for Comprehensive Indoor Environmental Quality Monitoring

doi: 10.3390/s24072176

Figure Lengend Snippet: General information about the calibrated instrumentation used to verify the behavior of EQ-OX sensors: for each measured quantity, the table reports instrument brand/model, sensor typology, and price, together with the range, resolution, and accuracy of the measurement declared by the manufacturers.

Article Snippet: Nitrogen dioxide , Alphasense NO2-A43F , https://ametekcdn.azureedge.net/mediafiles/project/oneweb/oneweb/alphasense/products/datasheets/alphasense_no2-a43f_datasheet_en_1.pdf?revision:20f798fc-5420-4067-81a6-68345d23e76d.

Techniques:

Results of the application of the linear correction algorithm described above. The initial correlation is the value of R 2 for the LCSs compared with the reference instrument; the final correlation is the value of R 2 * after the correction has been applied; and the entity of the applied correction can be seen from the values of the slope and intercept of the linear regression curve. The score is based on the value of the R 2 , ranging from 1 for R 2 < 0.2 to 5 from R 2 > 0.8.

Journal: Sensors (Basel, Switzerland)

Article Title: Environmental Quality bOX (EQ-OX): A Portable Device Embedding Low-Cost Sensors Tailored for Comprehensive Indoor Environmental Quality Monitoring

doi: 10.3390/s24072176

Figure Lengend Snippet: Results of the application of the linear correction algorithm described above. The initial correlation is the value of R 2 for the LCSs compared with the reference instrument; the final correlation is the value of R 2 * after the correction has been applied; and the entity of the applied correction can be seen from the values of the slope and intercept of the linear regression curve. The score is based on the value of the R 2 , ranging from 1 for R 2 < 0.2 to 5 from R 2 > 0.8.

Article Snippet: Nitrogen dioxide , Alphasense NO2-A43F , https://ametekcdn.azureedge.net/mediafiles/project/oneweb/oneweb/alphasense/products/datasheets/alphasense_no2-a43f_datasheet_en_1.pdf?revision:20f798fc-5420-4067-81a6-68345d23e76d.

Techniques:

Information on the dataset used to perform the linear regression on all LCSs. The ranges and average values are reported together with the slope and intercept obtained from the linear regression calculation. The last entry for formaldehyde is not reported as no linear correction can be calculated on a single datapoint.

Journal: Sensors (Basel, Switzerland)

Article Title: Environmental Quality bOX (EQ-OX): A Portable Device Embedding Low-Cost Sensors Tailored for Comprehensive Indoor Environmental Quality Monitoring

doi: 10.3390/s24072176

Figure Lengend Snippet: Information on the dataset used to perform the linear regression on all LCSs. The ranges and average values are reported together with the slope and intercept obtained from the linear regression calculation. The last entry for formaldehyde is not reported as no linear correction can be calculated on a single datapoint.

Article Snippet: Nitrogen dioxide , Alphasense NO2-A43F , https://ametekcdn.azureedge.net/mediafiles/project/oneweb/oneweb/alphasense/products/datasheets/alphasense_no2-a43f_datasheet_en_1.pdf?revision:20f798fc-5420-4067-81a6-68345d23e76d.

Techniques: Sampling

List of the sensors integrated in EQ-OX and links to the manufacturers’ websites. All the URLs have been lastly accessed on 9th March 2024.

Journal: Sensors (Basel, Switzerland)

Article Title: Environmental Quality bOX (EQ-OX): A Portable Device Embedding Low-Cost Sensors Tailored for Comprehensive Indoor Environmental Quality Monitoring

doi: 10.3390/s24072176

Figure Lengend Snippet: List of the sensors integrated in EQ-OX and links to the manufacturers’ websites. All the URLs have been lastly accessed on 9th March 2024.

Article Snippet: Nitrogen dioxide , Alphasense NO2-A43F , https://ametekcdn.azureedge.net/mediafiles/project/oneweb/oneweb/alphasense/products/datasheets/alphasense_no2-a43f_datasheet_en_1.pdf?revision:20f798fc-5420-4067-81a6-68345d23e76d.

Techniques: