In concrete production the reliable monitoring of high level conditions in silos is an important aspect of inventory management of cement and flyash. If the level monitor fails to function properly, large costs due to overfilling of the silo can occur. This is why the SafePoint® self-validating point level sensor from Monitor Technologies is the best choice for concrete producers worldwide. The SafePoint incorporates the patented use of Hall-effect technology, dual outputs to indicate both material presence AND unit health, and microcontroller technology along with industry leading features of Monitor’s standard rotary paddle point level monitor, to continuously protect cement and flyash storage and processing from the effects of unknown sensor failure by providing immediate notification of a sensor failure and confirmation of proper operation.
Concrete producers worldwide use the SafePoint to reliably protect against overfilling. The SafePoint is a "true fail-safe" self-validating level sensor and can save maintenance and plant personnel time and help avoid the costs of these untimely spills and overfill conditions. The SafePoint level sensor detects electrical and mechanical failure modes that might keep the unit from operating properly. The SafePoint is a relatively low cost fail-safe level sensor, around $300 US, with state-of-the-art electronics and patented technology, industry-leading screw-on/off cover, two conduit entrances, local indication and separate outputs to continuously monitor it's health status as well as the presence and absence of process material. It is designed specifically for applications with powders and other bulk solids and can be provided for use in Class I and II hazardous areas with CSA (for North America) and ATEX certifications for these environments.
Monitor Technologies LLC is a leading pioneer in level measurement and monitoring instrumentation for the worldwide cement producing industry as well as other industries involved with the storage, processing and handling of powders and bulk solids. Celebrating its 50th anniversary in 2008, the experience and market knowledge gained over five decades has earned Monitor a reputation for providing high quality and reliable product solutions. Monitor is located in Elburn Illinois.
SafePoint is just one of the many level measurement and monitoring devices designed and manufactured by Monitor Technologies LLC in Elburn, IL. For additional information please visit www.monitortech.com, www.flexar.info and our weblog at www.typepad.monitortech.com. You can also contact us at 1-800-766-6486 in the USA or 1-630-365-9403.
Global Flour Processor Uses Flexar® Guided Wave Radar
A large global flour processor and food products company recently began using the Flexar® guided wave radar in a total of eighteen (18) silos and bins to manage their finished product inventory. Readings from these continuous level sensors is reported as being reliable and accurate, even during pneumatic filling, contrary to their previous measuring system. A previous non-performing ultrasonic system was replaced by the Flexar level sensors. Flexar guided wave radar level sensors were chosen as the best for pneumatically filled dust laden flour silos.
Eight (8) Flexar level sensors are installed in load-out silos that fill bulk trucks with processed and finished flour. These silos are 12ft in diameter and 35ft tall. The finished flour is pneumatically conveyed into these silos. During filling the internal environment of the silos is very dusty and turbulent. The finished flour in these silos is used for loading bulk transport trucks for distribution. In addition, ten (10) Flexar level sensors are installed in 40ft high bins that contain bran. This material is also sent by bulk transport to end users.
All of the Flexar level sensors are equipped with an RS485 digital communications output that is connected to a PC with a graphical user interface for inventory management purposes. Monitor’s SiloTrack™ inventory management software is used by the facility to monitor and manage material inventories of both the finished flour and the bran. SiloTrack allows for multiple user viewing and data access via LAN and this is how the facility will be using the software that provides a flexible, graphical user interface, alarms, report generation and history analysis functions.
Guided wave radar is especially well suited to level measurement applications of dusty powder materials even when measuring during pneumatic filling. Flexar guided wave radar utilizes TDR (time domain reflectometry) technology. Radar pulses are continuously transmitted down the sensor’s probe and guided to the material surface where they are reflected back to the electronics along the wave guide. The time-of-flight of the pulses is measured and directly related to the distance to the material surface and its level.
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