Underground Loop Detector Cable 0.75 Mm Diameter Loop Coil For Vehicle Detection Barrier Gate

Underground Loop Cable 0.75 Mm Diameter Loop Coil For Vehicle Detection Barrier Gate

What is loop detector cable?

Used in vehicle monitoring equipment for detection of traffic movements  via creation of inductive loop to frequency

signal flowing in cable and metallic parts of vehicle. These cables are designed for installation  in a slot cut into

the carriageway.

SINOMATIC as a professional loop detectors manufacturer also provides high-quality loop cable with excellent

working performance. the user can easily make 20-2000uH inductive value loop for the projects. Inductive single

channel loop vehicle detection is still the most reliable and cost-effective method of vehicle detection in today's

traffic and parking applications.

Products Details

1. The detector should be installed in a waterproof housing as close to the loop as possible.

2. The loop and feeder should be made from insulated copper wire with a minimum cross-sectional area of 1.5mm².

The feeder should be twisted with at least 20 turns per meter. Joints in the wire are not recommended and must be

soldered and made waterproof. Faulty joints could lead to incorrect operation of the detector. Feeders which may

pick up electrical noise should use screened cable, with the screen earthed at the detector.

3. The loop should be either square or rectangular in shape with a minimum distance of 1 meter between opposite sides.

Normally 3 turns of wire are used in the loop. Large loops with a circumference of greater than 10 meters should use 2

turns while small loops with a circumference of less than 6 meters should use 4 turns. When two loops are used in close

proximity to each other it is recommended that 3 turns are used in one and 4 turns in the other to prevent cross-talk.

4. Cross-talk is a term used to describe the interference between two adjacent loops. To avoid the incorrect operation

of the detector, the loops should be at least 2 meters apart and on different frequency settings.

5. For single channel loop detectors installation, slots should be cut in the road using a masonry cutting tool. A 45o cut

should be made across the corners to prevent damage to the wire on the corners. The slot should be about 4mm wide

and 30mm to 50mm deep. Remember to extend the slot from one of the corners to the road-side to accommodate the

feeder.

6. Best results are obtained when a single length of wire is used with no joints. This may be achieved by running the

wire from the detector to the loop, around the loop for 3 turns and then back to the detector. The feeder portion of the

wire is then twisted. Remember that twisting the feeder will shorten its length, to ensure a long enough feeder wire is

used.

7. After the loop and feeder wires have been placed in the slot, the slot is filled with an epoxy compound or bitumen filler.

How to install a loop detector wire?

INSTALLATION STEPS

• Cutting a slot.
• Cleaning and drying the slot.
• Laying in the inductive-loop detector wire.
• Sealing the sawcut.
• Connecting the wire to the lead-in cable.
• Connecting the cable to the terminal strip in the cabinet.
• Ensuring the harness connects the terminal strip to the electronics unit.