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Silo level sensors normally do not need much attention; However, a periodic maintenance inspection on your level indicators may be helpful to prevent any future mishaps. Fall might be a good time to check, especially in areas that will be really cold soon. Nobody enjoys climbing silos in "freezing" weather.
Below is an example of a possible checklist for a plumb bob style level sensor.


For the Wiper Seal & Brush:
* Ensure cable freely travels through the entire wiper seal assembly.
* Clean wiper seal and brush as needed (compressed air or a toothbrush or similar works great) or replace if excessively worn.
* Ensure cable freely travels through the entire wiper seal assembly.
* Clean wiper seal and brush as needed (compressed air or a toothbrush or similar works great) or replace if excessively worn.
For the Cable:
* Ensure there are no kinks, bends, "fish hooks" and knots on the cable .
* Ensure the jacketing is not fraying or peeling off the cable. Replace as needed .
* Ensure there are no kinks, bends, "fish hooks" and knots on the cable .
* Ensure the jacketing is not fraying or peeling off the cable. Replace as needed .
For the Rollers:
* The white rollers on the cable side of the SiloPatrol unit should spin in both directions freely.
* The black wheel should spin freely. Ensure that it is tight on its 'Z' axis. (You can't push the black wheel in and out a significant distance.)
Also, check the silicone tire in the measurement wheel for cracks or wear. Replace measurement wheel if worn.
* The white rollers on the cable side of the SiloPatrol unit should spin in both directions freely.
* The black wheel should spin freely. Ensure that it is tight on its 'Z' axis. (You can't push the black wheel in and out a significant distance.)
Also, check the silicone tire in the measurement wheel for cracks or wear. Replace measurement wheel if worn.
For the Plumb Bob:
* Ensure the plumb bob is clean and securely attached to the cable.
* Verify that plumb bob attachment hardware is in good condition.
* Ensure the plumb bob is clean and securely attached to the cable.
* Verify that plumb bob attachment hardware is in good condition.
For more information on the SiloPatrol® cable-based level sensor, please visit:
John Mish
Technical Support Team
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