Vehicle Detection

346 products

    Vehicle detection equipment tells a gate operator when a car is in the lane, so the gate opens for exit traffic and holds open while a vehicle is in the path. Protec Controls carries loop detectors from Reno A&E, Diablo Controls, EMX and EDI, preformed loops from Reno A&E and BD Loops, EMX buried probes, AES e-Loop wireless kits, and loop wire and sealant. Installers and property managers use it on free-exit and safety lanes.

    346 products

    How to Choose Vehicle Detection for a Gate

    Loop, Probe or Wireless Sensor

    An inductive loop cut into the pavement, wired to a loop detector, is the standard method and works on concrete and asphalt. A buried probe senses the change a vehicle's steel makes in the earth's magnetic field. It goes in a small bore, so it suits gravel drives and pavers where a loop is hard to place. Wireless sensors run on batteries and send a signal to a receiver at the operator, which saves trenching a lead-in across the drive.

    Match the Detector to the Operator

    • Voltage: low-voltage 12 to 24V AC/DC or 120VAC.
    • Connector: a universal 11-pin plug-in on a socket, a wire harness, or a plug-in card for one operator brand.
    • Channels: one loop per channel, or a dual-channel unit to run two loops from one detector.

    Compare loop detectors by these three points before anything else.

    Where the Loops Go

    A typical automatic gate has an exit loop on the inside to open the gate, plus safety loops on both sides of the gate line that keep it from closing on a car. A swing gate often gets a shadow loop inside the swing area to hold the gate open while a vehicle sits there.

    Saw-Cut Wire or Preformed Loops

    A field-built loop is loop wire laid in a saw cut and sealed. It costs less in material but takes more time, and bare wire can fail when pavement shifts. Preformed loops have the wire sealed in tubing with a twisted lead-in attached. Saw-cut versions go into existing pavement; direct-burial versions are set before a new pour or under pavers.

    Install Supplies

    Plan for sealant, backer rod and a diamond saw blade. A loop tester helps find a damaged loop before you replace a good detector.

    Common Questions

    Does a vehicle loop count as entrapment protection under UL 325?

    No. Loops sense vehicles, not people. Automatic gates still need monitored photo eyes or safety edges, found under gate and door safeties.

    Can I add free exit to an existing gate?

    Yes. Most gate operators have an exit input for a loop detector, probe or wireless sensor.


    Recently viewed