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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!

 

Related Product Solutions
 

>>

Proper Tether Length Makes a Tilt Switch Work Better
   

 

  
Spotlight: True Fail-Safe Level Switch
SafePoint Level SwitchSafePoint Light  
SafePoint®
"True" Fail-Safe Level Switch

The SafePoint rotary paddle level switch with a self-validating design detects material presence plus continuously monitors its own ability to function. The analysis includes sensor health and system power failure, which makes the SafePoint truly “fail-safe”. The SafePoint incorporates patented use of Hall-Effect technology, dual outputs to indicate both material presence and unit health, and microcontroller technology to continuously protect bulk solids processing and storage from the consequences of unknown sensor failure by providing immediate indication of a sensor failure and confirmation of proper operation.

Other practical features of the SafePoint include rugged construction, motor shut-off when paddle becomes impeded to maximize motor life, twist On/Off cover for bolt free removal, and local status indicating light (except hazardous location models)

A practical application for the SafePoint would be to use this "true" fail-safe product if undetected sensor failure could result in a catastrophic process problem.

Click here for more information on the SafePoint Level Switch or contact Monitor Technologies LLC at 800-766-6486 in the USA and 630-365-9403 worldwide.
 

>>Click here to learn more about other Point Level Switches from Monitor Technologies

>>Download Product Bulletin 253
 

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