Feasibility of Using Natural Fibers as Relative Humidity Sensor Filters in Stored Grain Bins
Authors: Chelladurai, V., F. Jian, R. Vadivambal, K. Folk
Description: Grain temperature and relative humidity (RH) sensors are essential tools for monitoring stored grain quality at farms and grain elevators. Use of RH sensors is increasing due to its dual role (measures RH and temperature at the same time). The measured RH and temperature can be used to predict grain moisture content. Most of the manufacturers of RH sensors are using expensive sintered filters in order to avoid dust covering on the filters. Sensitivity of these sensors can be reduced by the deposited dust generated during grain handling. In this study, feasibility of using two natural fibers (sisal and hemp) as filtering material for RH sensors was tested. Five RH sensors (three were covered by sisal and hemp fibers, and two were not covered) were placed in an environmental chamber which was set at varying temperatures and relative humidities. There were no significant difference in time lag of measuring temperature and humidity between covered and uncovered sensors. The natural fibers provided a small amount of insulation, which resulted 0.5
Keywords: Relative humidity sensors, Grain bin, Filter, Natural fibers
Technical field: Information Systems Engineering
Conference name: CSBE/SCGAB 2015 Annual Conference, Edmonton, AB, 5-8 July 2015.
Session name: Poster
Citation: Chelladurai, V., F. Jian, R. Vadivambal, K. Folk. 2015. Feasibility of Using Natural Fibers as Relative Humidity Sensor Filters in Stored Grain Bins. CSBE/SCGAB 2015 Annual Conference, Edmonton, AB, 5-8 July 2015.
Publisher: Canadian Society for Bioengineering
Language 1: en
Rights: Canadian Society for Bioengineering