Rotary paddle switches are a great way to detect when your material reaches or leaves a point in your silo. Frequently we see paddles being ordered with extensions, and occasionally, we see a significant length of extension. With an extension, you can mount your paddle switch in a top mount location, and ‘extend’ the paddle into the bin at just about any length (up to 144 inches), but when doing this; you have to take into consideration a few things.
The extensions are solid; they are subject to lateral forces that may end up doing damage to your paddle, the extension, or in few cases, the switch itself. This is why Monitor recommends the use of a guard, which surrounds the extension and prevents it from doing much traveling while in the vessel.
The use of our Springflex coupling is also highly recommended when the length of the insertion is greater than 18 inches. This takes a lot of lateral force off the paddle and extension by acting as a ‘shock absorber’ for the switch itself.
Also, keep in mind that the guard and extension, when ordering, are always going to be the same length, and with a guard, a full coupling mounting plate must be used. This will ensure that you get the most life out of your rotary paddle switch.
John Mish
Sales / Technical Support
Monitor Technologies
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