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Economical High Level Sensing in Grain Storage Bins

PROBLEM:
Keep the cost low, but reliably detect the high level of grain in forty-five (45) storage bins. The lowest cost level indicator / sensor for this type of application is typically a Tilt Switch. In this application all bins are filled with a “broadcaster” device that facilitates the gentle handling of the grain to ensure individual kernel integrity.

EXPLANATION:
As a result of using a device that fills the bins very gently and slowly, the level in the bin increases very gradually. This reduction in fill rate can prove problematic with tilt type switches as it may be possible to gradually engulf the switch rather than “tilt” it to activate the switch output. The surface area of the tilt switch had to be increased if it was to be activated by the material and tilted to an angle of 17 degrees that would activate it. Making a larger size tilt switch would not be economical.

SOLUTION:
Monitor recommended an attachment to its TC-3X tilt switch. This attachment was an “actuator” that consisted of an 8” diameter ball float attached from the bottom of the tilt switch with a short section of pipe. This proved to be the solution and also economical and reliable. Monitor can equip its tilt switches with ball float actuators to meet the application.

Give Monitor Technologies a call and let us put our creative solutions to work for you!

 

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Proper Tether Length Makes a Tilt Switch Work Better
   

 

  
Spotlight: Inventory Control
Solids Flow Detection  
Solids Flow Detection

Microwave solids flow detectors can be used in a variety of applications including feed mills & grain processing, consumer foods (cereal, sugar, cocoa, coffee), chemicals & pesticides and more. For example, one company uses Monitor’s Model SFD-2 solids flow detector to verify the flow of feed pellets through their various transport lines which involves a process where a horizontal screw auger is conveying pellets over to a vertical gravity chute.  The chute then directs the pellets to a process down below. They have carefully placed the SFD-2 so that it detects the pellets as they fall directly across the sensor face. (See Below)

Solids Flow_Pellet Application

The Model SFI and SFD-2 line of solids flow detectors from Monitor Technologies, LLC provide analog or relay outputs to indicate the flow / no-flow condition of powder and bulk solids materials in chutes and pneumatic conveying lines.  Using microwave Doppler radar technology these units are non-invasive plus extremely reliable and rugged to withstand the rigors of the installation and your process extremes. From automated systems with pneumatic lines to gravity chutes, solids flow monitors can help to improve process performance. They can assist in detecting flow problems, as well as, enhance the level of automation at a facility like turning a conveyor on or off.

For more information on Solids Flow Detectors click here or contact Monitor Technologies LLC at 800-766-6486 in the USA and 630-365-9403 worldwide.
 

>>Click here for more information about Solids Flow Detectors from Monitor Technologies.
>>Click here for more information on Plug Chute Solutions
>>Download Product Bulletin 813
 

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