CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 11016 > Article
Paper
30 April 2019 Development and validation of a multi gas optical sensor for the meat industry
L. Cocola, M. Fedel, M. Franzoi, A. Goi, M. De Marchi, L. Poletto
Author Affiliations +
Proceedings Volume 11016, Sensing for Agriculture and Food Quality and Safety XI; 1101607 (2019) https://doi.org/10.1117/12.2520040
Event: SPIE Defense + Commercial Sensing, 2019, Baltimore, MD, United States
Abstract
Bacterial processes during shelf life of meat are of paramount importance for packaging, preservation and conservation of food. As those processes are linked with fermentation and production of some gaseous species, a sealed thermostatic test cell has been developed and fitted with optical gas sensor as a tool for microbiology and food researchers. The gas sensing instrument is able to detect ammonia and water vapour through a fiber coupled, Herriott multipass absorption cell used with a Distributed Feedback (DFB) laser operating around 1514nm in a Tunable Diode Laser Absorption Spectroscopy (TDLAS) setup. A software defined Wavelength Modulation Spectroscopy (WMS) was used together with a custom made fitting routine to discriminate ammonia and water vapour. A Non Dispersive Infrared (NDIR) instrument at 4260nm is also included in the gas path for carbon dioxide sensing. Headspace gas is sampled from the cooled thermostatic cell and circulated with a diaphragm pump through the sensing instrument while measurements are logged. The whole device consisting of electro optical sensors assemblies and circulation fittings has been integrated into a portable unit. Validation tests were performed at different temperatures with calibrated solutions of ammonia and water directly placed in the thermostatic cell. The results were compared with a reference electrochemical sensor and show that the multipass ammonia sensor is able to reach a resolution in the order of 100ppb with a time response of less than one minute.
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
L. Cocola, M. Fedel, M. Franzoi, A. Goi, M. De Marchi, and L. Poletto "Development and validation of a multi gas optical sensor for the meat industry", Proc. SPIE 11016, Sensing for Agriculture and Food Quality and Safety XI, 1101607 (30 April 2019); https://doi.org/10.1117/12.2520040
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
;
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 6 PAGES
DOWNLOAD PAPER SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Sensors
Absorption
Optical sensors
Fiber coupled lasers
Infrared sensors
Modulation
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top