VEHICULAR LOOP DETECTOR INSTALLATION

WARNING –Consult the installation instructions from the loop detector manufacturer. The following statements are provided as a guide but different requirements may be required by the vehicular loop detector manufacturer.

Guidelines for Vehicular Loop Detector Installation

1.Prevent sharp corners in the geometry of the loop sensor.

2.Install the appropriate number of turns for your loop geometry based on the loop perimeter. Use Table C (below) as a guide.

3.Use XLP (cross-linked-polyethylene) type of wire. This wire reduces the effects of moisture and other environmental events in altering the functionality of the vehicular loop detector.

4.Twist the lead wire at least 6 turns per foot.

5.Use BACKER-ROD to minimize damage to the loop detector wire prior to using the sealant.

6.Place the loop detector wire and adjust the sensitivity of the vehicular loop detector unit in a way to minimize the effects of the gate over the loop detector wire.

IMPORTANT – Some of the following parameters may affect the proper functionality of the vehicular loop detector (consult the installation manual and the manufacturer of the vehicular loop detector).

•Gate size,

•Number of turns in the loop sensor wire;

•Distance from the loop sensor wire to the gate either at the open or close position.

Saw Cut

1" Min.

Sealant

Backer-Rod

Vehicular Loop

Detector Wire

(3 Turns Shown)

Continuously Wind Wire in Loop Slot for the Required Number of Loops (2 Loops Shown)

Table C – Recommended Number of Turns

Perimeter in Feet

Number of Turns

10

5

 

 

20

4

 

 

30-40

3

 

 

50-100

2

 

 

Provide Additional Saw Cuts to Eliminate Sharp Corners

1/8" to 1/4" Saw Slot

Twist Wire Outside the Loop 6 Twists/Foot Until Its Connection to the Loop Detector

TECHNICAL SUPPORT 1 800 908 0884

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