A Portable Solid-State Moisture Meter For Agricultural And Food Products

C R Bull; J V Stafford; G S Weaving

doi:10.1117/12.945579

3 October 1988 A Portable Solid-State Moisture Meter For Agricultural And Food Products

C R Bull, J V Stafford, G S Weaving

Proceedings Volume 0917, Recent Developments and Applications of Infrared Analytical Instruments; (1988) https://doi.org/10.1117/12.945579
Event: Sira/SPIE Infrared Meeting, 1988, London, United Kingdom

Abstract

This paper reports on the development of a small, robust, battery operated near infra-red (NIR) reflectance device, designed for rapid on-farm measurement of the moisture content of forage crops without prior sample preparation. It has potential application to other agricultural or food materials. The instrument is based on two light emitting diodes (LEDs), a germanium detector and a control CMOS single chip microcomputer. The meter has been calibrated to give a direct read out of moisture content for 4 common grass varieties at 3 stages of development. The accuracy of a single point measurement on a grass sample is approximately ± 6% over a range of 40-80% (wet basis). However, the potential accuracy on a homogeous sample may be as goon as 0.15%.

Citation Download Citation

C R Bull, J V Stafford, and G S Weaving "A Portable Solid-State Moisture Meter For Agricultural And Food Products", Proc. SPIE 0917, Recent Developments and Applications of Infrared Analytical Instruments, (3 October 1988); https://doi.org/10.1117/12.945579

ACCESS THE FULL ARTICLE

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