TECHNICAL PROFILE: SILO MONITORING 2.0 with grain of elevated moisture and temperature. A sudden small rise of the CO2 prescribes an unstable condition. We have silo B with grain of low moisture and temperature. A higher CO2 concentration is recorded but the algorithm doesn't issue an alert since the grain condition is deemed good. PHOSPHINE FUMIGATIONS MONITORING Traditional methods of monitoring systems for fumigation applications employ toxic gas sensors that use suction. These kinds of sensors are bulky, hard to use, have low sample frequency and often involve human interaction making them prone to human error. Advances in technology now permit their replacement by wireless sensors, such as the ones developed by Centaur Analytics. An importance of precisely PRQLWRULQJ D IXPLJDWLRQ LV WKH ÀXFtuation of the phosphine concentration. 7KH IXPLJDQW FRQFHQWUDWLRQ ÀXFWXDWHV between night and day, sometimes drop74 June 2020 / World Grain / www.World-Grain.com Photos courtesy of Centaur MONITORING GRAIN MOVEMENTS It is vital for silo managers to be able to monitor the quantity of the available product. For grain silos, a fill level sensor is commonly used. A fill level sensor is a contactless radar system that measures the distance between the sensor (usually mounted on the silo roof) and the grain surface accurately. To translate the measured distance to total grain mass stored one should consider the following variables: x Grain bulk density (varies with moisture content). x Pack factor (varies with grain height). x Grain surface shape (varies with the operation: loading, emptying). The real-time monitoring of the product quantity in a silo includes an advanced algorithm that considers the above parameters and translates the distance meaVXUHG E\ WKH ¿OO OHYHO VHQVRU WR DFFXUDWH calculations of the grain mass and volume. Monitoring grain in real time with precision supports a unique traceability system.http://www.World-Grain.com