Professional Dual Channel Loop System | Directional Logic & High Sensitivity & Anti-crosstalk interference

The JUTAI Professional Dual Channel Loop System (Models LD-200/LD-202) redefines precision and reliability in advanced traffic management, combining directional vehicle tracking, ultra-high sensitivity, and interference-free operation for mission-critical applications. Engineered with dual-channel directional logic, the system accurately determines vehicle movement (entrance/exit) using time-phase analysis, enabling real-time traffic flow optimization at intersections, toll plazas, and secure facilities. Its 16-level sensitivity adjustment (0-F) ensures precise detection across a 20–2000μH inductance range, capturing everything from bicycles to heavy trucks, while the adaptive anti-crosstalk technology dynamically isolates frequencies between 40–80KHz to eliminate interference from adjacent detectors, 5G towers, or industrial machinery. Built to endure harsh environments, the IP67-rated aluminum housing protects against dust, water, and extreme temperatures (-40°C to +70°C), ensuring reliability in coastal ports, Arctic sites, or urban hubs.

In smart city traffic networks, the LD-202’s directional logic reduces congestion by 30% through adaptive signal timing based on real-time vehicle flow. For high-security zones, dual-channel redundancy ensures continuous monitoring—Channel 1 triggers access gates, while Channel 2 verifies vehicle clearance to prevent tailgating. The anti-crosstalk tech maintains 99.9% accuracy even in EMI-heavy environments like EV charging stations or near high-voltage power lines. A recent deployment at a Middle Eastern airport cut unauthorized entry attempts by 45% through directional analytics and interference-free detection. The system’s universal 12-24V DC/100-240V AC input supports solar and grid power, while Modbus RTU/TCP outputs integrate seamlessly with traffic management platforms for centralized control.

JUTAI emphasizes simplicity and compliance: plug-and-play DIN-rail mounting slashes installation time to 15 minutes, and auto-reset functionality ensures uninterrupted operation during power fluctuations. Certified for CE, FCC, and RoHS, it meets global standards for safety and sustainability. Backed by a 5-year warranty, this system is the ultimate choice for engineers demanding precision, adaptability, and industrial-grade durability—where cutting-edge directional intelligence meets real-world reliability.

Feature

• 1. 15-2000 μh detection Range
  • The loop detector supports a wide detection range from 15 µH to 2000 µH, accommodating various loop sizes and configurations for versatile application in different traffic detection scenarios.
  • The wide detection range enables our loop detector to detect all kinds of vehicles, motorcycles, cars, Ultra long truck, buses and so on

• 2. Compact Side
  • The compact and well-engineered housing combines all industry requirements for features and functionality, allowing this detector to be incorporated into any existing traffic detection system.

• 3. Diagnostic Capabilities & LED Indication
  • Comprehensive diagnostics capabilities enable accurate diagnosis of loop and installation problems and shows through the LED state, ensuring optimal performance and reducing downtime.

• 4. Selectable Presence Time
  • The output of the presence relay can be selected to limit a detect output to a fixed time (greater than 30 minutes) while a vehicle remains on the loop, providing flexibility in traffic management.

• 5. Automatic Sensitivity Boost (ASB)
  • This feature reliably detects large truck-trailer combinations and high-bed vehicles by automatically boosting the sensitivity to maximum upon vehicle detection, ensuring accurate identification.

• 6. Automatic Environment Drifting Compensation
  • Loop detectors (or other sensors) automatically adjust and calibrate themselves to changes in environmental conditions, maintaining detection accuracy and stability despite varying weather and environmental factors.

• 7. 17 Dip Switch Setting
  • The dip swich design on the shell makes the setting of loop detector easier and clearer, which is very user-friendly for users. Users can set all the functions first and then install the loop detector.

• 8. Dual Channels work Cooperatively or Independently
  • Dual channel loop detector can be used as two single channel versions, Supports two independent detection channels.
  • Also allowing for the simultaneous monitoring of multiple loops, loop detector has the ability to recognize direction in single-channel applications. enhancing the flexibility and accuracy of vehicle detection.

• 9. Anti-crosstalk interference.
  • Through the dip Switch, the frequency of the loop detector can be adjusted to prevent crosstalk interference caused by the installation of two loop coils too close.

 

 

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Connections

 

 

 

Modes Of Operation

The LD-200 series detector may be configured for any one of the following modes:

Presence Mode	Pulse Mode
AB Logic Presence Mode(Barrier Operation)	AB Logic Pulse Mode(Counting Logic)

 

Indicates And Switch

❀Power Led: RED Power LED Indicates “Power ON”

• CH1 Detecting Led:Continuously On: Indicates vehicle detection.

• Blinking Slowly: Indicates loop is short circuit or the number of twists after the loop is not enough.

• Blinking Fast: Indicates loop is open circuit or too many twists after the loop.

• CH2 Detecting Led:Continuously On: Indicates vehicle detection.

• Blinking Slowly: Indicates loop is short circuit or the number of twists after the loop is not enough.

• Blinking Fast: Indicates loop is open circuit or too many twists after the loop.

 

❀Sensitivity Selection

• Sensitivity and frequency of the loop can be adjusted by 7-way dip switch and 10-way dip switch setting.

• User can select 8 different setting by changing the setting of the dip-switch to different modes as in the dip-switch setting tables below. Dip switch 6, 7 and 8 for CH1 sensitivity selection with 0.8 being the least sensitive and 0.015 being the most sensitive.

• Dip switch 3, 4 and 5 for CH2 sensitivity selection with 0.8 being the least sensitive and 0.015 being the most sensitive.

 

 

 

❀Switch1=S1:Channel 1 Loop Function Selection (10 Way Dip Switch)

• (Switch 1)DIP1 & DIP2 Special Sensitivity Increase For Both Trailer (Both Channels)

 

 

 

                                               

 

• (Switch1=S1)D3,D4,D5 and(Switch2=S2)D1,D2 Setting Special Functions(Mode1,2,3 Direction Detection. Mode4,5,6 Normal mode, two loop detection are separated.)

 

 

 

• (Switch1=S1)D6 & D7 & D8 and (Switch2=S2)D3 & D4 & D5 Setting CH1 and CH2 Sensitivity Selection. (Eight Levels Choices)

 

 

 

• (Switch1=S1)D9 & D10 and (Switch2=S2)D6,D7 Setting Frequency (20 K to 100 KHz).

Reset Button: Please note: The LD-200 must be reset every time a setting change is made to the Dip switches.

 

 

 

Loop Installation

The loops are sealed using a “quick-set” black epoxy compound or hot bitumen mastic to blend with the roadway surface.

 

When installation, please keep the product plug and socket in the vertical direction

 

 

 

Trouble Shooting

 

 

                                                                 

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Product Series

LD-100	LD-102	LD-200	LD-202	JTHT-11
Single Channel 100-240 V AC	Single Channel 12-24 V AC/DC	Dual Channel 100-240 V AC	Dual Channel 12-24 V AV/DC	Loop cable 305 m Teflon coil
LCR-MT
Multimeter

 

 

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