Gate Loop Detector Coil With Good Quality Loop Coil For Sale
Gate Loop Detector Coil
Gate Loop Detector Coil with good quality. Under ideal conditions (regardless of the impact of all environmental factors), the embedding of the inductor coil only considers the size of the area (or perimeter) and the number of turns, regardless of the material of the wire. However, in practical engineering, the mechanical strength of the wire and the high and low-temperature anti-aging problems must be considered. In some environments, the acid and alkali corrosion resistance must also be considered. The vehicle detector will not function properly due to the aging of the gate loop detector coil (wire)or insufficient tensile strength to cause damage to the wire. In the actual project, it is recommended to use Teflon high-temperature soft wire above 0.75-1.0mm.
Usually, the loop detector coil should be rectangular. The two long sides are perpendicular to the direction of movement of the metal objects, and the spacing between them is recommended to be 1 meter. The length of the long side depends on the width of the road, and usually, the ends are 0.3 to 1 meter narrower than the road spacing. In order to operate the detector optimally, the inductance of the gate loop detector coil should be kept between 100uH and 300uH. In the case where the loop detection coil inductance is constant, the number of turns of the traffic loop detector coil has an important relationship with the circumference. The smaller the circumference, the more the number of turns. Metal materials such as various cable pipelines, steel bars, and sewer covers may be buried under the road, which will greatly affect the actual inductance value of the coil, so the above table data is for user reference only. In actual construction, the user should use the inductance tester to actually test the inductance of the inductive coil to determine the actual number of turns in the construction, as long as the final inductance of the coil is within a reasonable working range (eg between 100uH and 300uH). When winding the coil, leave enough length of wire to connect to the loop sensor and ensure there is no joint in the middle. After winding the coil cable, the lead cable must be made into a tightly twisted pair, requiring a minimum of 1-meter twist 20 times. Otherwise, the untwisted output leads will be introduced to dry, making the coil inductance value unstable. The output lead length should generally not exceed 5 meters. Since the sensitivity of the detection coil decreases as the length of the lead increases, the length of the lead cable is as short as possible.
Make the gate loop detector coil as follows:
1. It is good to lay a layer of 0.5 cm thick fine sand on the bottom of the cleaned coil and lead groove to prevent the hard corners of the bottom of the groove from cutting the wire for a long time.
2, choose the appropriate coil wire, the requirements: laying high-temperature silver-plated wire, the skin is wear-resistant, high temperature, waterproof, such as the choice of fire-fighting wire.
3. Place 4~6 (circle) wires clockwise in the coin slot. The larger the coil area, the fewer the number of turns. The wires placed in the slots should be loose, not stressed, and pressed tightly to the bottom of the slots.