Although designed to benefit premature newborns (NB) by creating an artificial environment close to the uterine conditions, the use of neonatal incubators may expose the NB to several sources of risk. Periodic inspections for verification of minimum requirements of performance and safety can identify these and their degrees of impact, helping to minimize them. In order to automate the metrological evaluation essays in neonatal incubators, we present the development of an analyzer with the capacity to perform all measurements of the variables defined in the standard NBR IEC 60601-2-19 and communicate them to a computer allowing the transmission of measurement data and reception of commands for remote adjustment. The development of this system creates a nationalized alternative with cheaper and more suitable features for the metrological tests required. As a result, we obtained a micro-controlled portable and useful modular prototype, which measures temperature, relative humidity, oxygen concentration, acoustic noise and air speed. The calibration results show that the maximum relative error and measurement uncertainty for the subsystems of temperature, relative humidity, acoustic noise and O 2 concentration were respectively (-0.42; 0.05 °C), (±0.72; 0.24%) RH, (-5.17; 0.68 dB) and (1.28; 2.2%). These results indicate that the analyzer presents a metrological quality compatible with the regulatory requirements established.273194197Ashton, N., Ward, B., Serpell, G., Role of oxygen in the genesis of retrolental fibroplasia: A preliminary report (1953) British Journal of Ophthalmology, 37 (9), pp. 513-520. , http://dx.doi.org/10.1136/bjo.37.9.513, PMid:13081949. PMCid:1324188(2000) NBR IEC 60601-2-19: Equipamento Eletromédico, Parte 2-19: Prescrições Particulares Para Segurança De Incubadoras Para Recém-nascidos (RN), , Associação Brasileira de Normas Técnicas - ABNT, Rio de Janeiro: Associação Brasileira de Normas TécnicasBercini, L.O., Mortalidade neonatal de residentes em localidade urbana da região sul do Brasil (1994) Revista De Saúde Pública, 28 (1), pp. 38-45. , http://dx.doi.org/10.1590/S0034-89101994000100005Carvalho, A.P., Pereira, L.F., Noise In Infant Incubators and In Neonatal Intensive Care Units, , http://paginas.fe.up.pt/~carvalho/in98.pdf, In: International Conference on Noise Control Engineering: Proceedings of the 1998 International Conference on Noise Control Engineering [Internet]1998 November 16-18Christchurch, New Zealand. [cited 2010 mar 22]Falk, S.A., Farmer, J.C., Incubator noise and possible deafness (1973) Archives of Otolaryngology - Head & Neck Surgery, 97 (5), pp. 385-387Howe, W.G., Two-sided tolerance limits for normal populations - Some improvements (1969) Journal of the American Statistical Association, 64 (326), pp. 610-620. , http://dx.doi.org/10.2307/2283644(2002) IEC 61672-1: Electroacoustics - Sound Level Meters - Part 1: Specifications, p. 85. , International Electrotechnical Commission - IEC, Geneva: International Electrotechnical Commission(1997) ISO 7767: Oxygen Monitors For Monitoring Patient Breathing Mixtures - Safety Requirements, , International Organization for Standardization - ISO, Geneva: International Organization for Standardization(2004) ISO 21647: Medical Electrical Equipment - Particular Requirements For the Basic Safety and Essential Performance of Respiratory Gas Monitors, , International Organization for Standardization - ISO, Geneva: International Organization for StandardizationKim, Y.H., Kwon, C.H., Yoo, S.C., Experimental and numerical studies on convective heat transfer in a neonatal incubator (2002) Medical & Biological Engineering & Computing, 40 (1), pp. 114-121. , http://dx.doi.org/10.1007/BF02347704, PMid:11954698Maluf, N., Williams, K., (2004) An Introduction to Microelectromechanical Systems Engineering, p. 304. , 2th ed. Norwood: Artech House PublishersRego, M.A.S., Anchieta, L.M., (2005) Assistência Hospitalar Ao Neonato, , http://www.saude.mg.gov.br/publicacoes/linha-guia/protocolos/assistencia_ hospitalar_neonato.pdf, Belo Horizonte: Secretaria de Estado de Saúde de Minas Gerais, Internet, cited 2010 mar 25Rodrigues, R.G., Oliveira, I.C.S., Os primórdios da assistência aos recém-nascidos no exterior e no Brasil: Perspectivas para o saber de enfermagem na neonatologia (1870-1903) (2004) Revista Eletrônica De Enfermagem, , http://www.revistas.ufg.br/index.php/fen/article/view/809/924, Internet, cited 2011 nov 10Steinhart, J.S., Hart, S.R., Calibration curves for thermistors (1968) Deep Sea Research and Oceanographic Abstracts, 15 (4), pp. 497-503. , http://dx.doi.org/10.1016/0011-7471(68)90057-0