Induction Loop Cable Installation

An inductive loop system consists of these components.

Induction loop cable installation.

The inductive loop system behaves as a tuned electrical circuit in which the loop wire and lead in cable are the inductive elements. A buried coil of wire loop in the roadway vehicle detector electronic module controlled device such as roller door or boom gate 1. A 100m reel of white 1 5mm2 single core cable. Perimeter loops are ideally installed at floor or ceiling level.

The loops can be installed below the floor in a basement on the floor or high on the walls or ceiling. The induction of a loop can be measured with the the help of a loop detector with an integrated measuring function e g. A loop loop extension cable and a detector. When installing or repairing an inductive loop system the smallest detail can mean the difference.

For exiting the property and especially safeties for closing inductive loops are the best. When a vehicle passes over the loop or is stopped within the loop some of the vehicle s ferrous body material increases the loop s inductance in the same principle as including a metal core within a solenoid coil. For railway applications the induction loop has to be positioned between the tracks. Ideal for use as a floor or ceiling loop in audio frequency induction loop systems.

An inductive loop vehicle detection installation consists of three components. To determine the best loop cable for a particular application or room size download our afils loop calculator from our software apps page. Inductance loops are available as direct burial or cut in. Before sealing the loop groove it is recommend ed to provisionally install the loop lineas and to measure the inductivity.

In general direct burial loops are placed below the surface prior to application of asphalt or concrete while cut in loops are installed within a slot sawed into the existing surface. Dld1 24 dld2 24 or by means of an appropriate measuring device. Minimum distance between loop and track. Sleeper track loop track concrete slab because two wheeled vehicles cause minor detection the loop should be installed in an angle of 45 to the travel direction.

Ultra low overspill loop design 14 cable choices and selection 15 length limits 16 installation considerations 16 field strength meter 17 tone generator 17 testing and maintaining induction loop systems 18 site survey 18 commissioning 18 regular system checks 18.