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Welcome to BD Loops Lab

Special Help/Instructions:

How to Properly Meg a Loop - Easy Instructions

Inductance Loop Warning Sign
Warn other workers that they need to use caution when working around exposed loops. We reccomend printing this sign out on brightly colored paper.

Loop Sign Off Form
Protect yourself! If you are unable to see a loop installation through to the end or have to leave a loop exposed while waiting for a concrete pour, have the owner/manager sign off that everything was working when you left the job site.

View Our Tests & Results:

Phasing Test
Observations of the effect phasing has on loop detection when two loops are hooked in series on each side of a slide gate or overhead door

TFFN / THHN Wire Test
Wrapping your own loops with TFFN or THHN Wire? Is TFFN wire rated for saw-cut applications? Learn what issues arise when TFFN / THHN wire is installed in asphalt.

1/8" Groove Test
Air pockets and false detections cause many frustrating repeat service calls, could your problem be the loops? Learn why you should never install a saw-cut loop in a 1/8" saw-cut groove.

Watch The Width
A literature sheet that explains why it is necessary to use a 3/16" blade for saw-cut applications.

Stand Off Distance
Observations of a loop’s detection range both perpendicular and parallel.

Air Pocket Test
Can air pockets really cause false detections? Observations of a loops preformance with an air pocket.
You can watch a video of this test below.

Published Articles:

Inductance Loops and Loop Phasing: How it Works
PDD WorldFence

Loops: How to Insure Proper Placement and Size
PDD WorldFence

Loops: Understanding and Preventing Phantom Detections and Air Pockets
PDD WorldFence

Training Update: Loops and Twisted Lead-In
FencePost

Entire Collection of Articles
Read all of our Education Editorials

Videos:

Air Pocket Test

BD Loops LabBD Loops Training
Course Letters of Reccomendation:


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BD Loops - Simply the Best (714) 890-1604