The JUTAI Loop Detector series is engineered to deliver reliable, high-precision vehicle
detection for diverse industrial and urban applications. Designed
with 16-level sensitivity adjustment (0-F), these detectors adapt seamlessly to detect vehicles ranging from
motorcycles to heavy-duty trucks (20–2000μH inductance range). The frequency customization (40–80KHz) eliminates cross-talk interference in multi-detector setups,
ensuring stable performance in complex environments like toll
plazas, parking garages, or logistics hubs. Built for durability,
the IP67-rated housing protects against dust, water ingress, and extreme temperatures
(-40°C to +70°C), making it ideal for both indoor and outdoor
installations.
Single-Channel Models (LD-100/LD-102):
- LD-100: Operates on 100–240V AC, perfect for grid-connected parking systems or traffic lights.
- LD-102: Supports 12–24V DC, ideal for solar-powered gates or industrial door control.
Both models feature dual relay outputs (pulse + presence detection) with configurable delay settings
(0–30s) for precise barrier or signal control.
Dual-Channel Models (LD-200/LD-202):
- Channel 1: Triggers gates/traffic signals with ≤10ms response.
- Channel 2: Provides safety redundancy for anti-collision or toll evasion
prevention.
The auto-reset function ensures uninterrupted operation during power fluctuations, while
LED indicators simplify fault diagnosis (coil shorts, open
circuits).
Certified for CE, FCC, and RoHS, JUTAI detectors are trusted globally in smart cities, warehouses,
and highways. With plug-and-play installation and DIN-rail compatibility, they minimize downtime and maintenance
costs—proving that robust performance doesn’t require complexity.
Features
- 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. LED Diagnostic Capabilities
- Comprehensive diagnostics capabilities enable accurate diagnosis of
loop and installation problems and shows through LED, 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. Loop Presence Time
- Interference between adjacent loop detectors can be identified
through integral indication and eliminated by adjusting the
frequency setting, ensuring reliable operation.
- 6. Two Separate Output Relays
- Presence Relay A: Provides presence output and can be extended for
0, 2, 5, 8, 10, 15, 20, or 30 seconds, programmable with external
10-way DIP switches.
- Pulse Relay B: Programmable with external 10-way DIP switches, it
offers presence, pulse on entry, pulse on exit, or failed output,
enhancing detection flexibility.
- 7. 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.
- 8. 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.
- 9. 10 Dip Switch
- 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.
- 10. 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.
Connection
(1)Power Led: RED Power LED Indicates “Power ON”- 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.
(2)Switch 1 (Trimpot), Sensitivity SelectionSensitivity of the loop can be adjusted by the trimpot labeled
“Sensitivity”. User can select 16 different setting by turning the trimpot with 0 being the least sensitive and “F”
being the most sensitive.
(3)Switch 2 (Dipswitch Settings)
1.DIP 1 & DIP 2 Setting Special Functions
2. DIP 3 & DIP 4 Setting Relay B Output
3. DIP 5 Setting Automatic Reset
4. DIP 6 & DIP 7 & DIP 8 Setting Relay A Delay
5. DIP 9 & DIP 10 Setting Frequency (40 K to 100 KHz). Used to
avoid the interference
- In the application, where two or more loop detectors and sensing
loops have been installed, set one detector to high frequency and the other set to low frequency to
minimize the effects of cross-talk between the two systems(The
sensing loops and detectors should be positioned at least 2m
apart).
- Reset Button:Please note: The LD-100 must be reset every time a
setting change is made to the Dip switches.
Detector Position And Installation:- Install the detector in a weatherproof housing.
- The detector should be as close to the sensing loop as possible.
- The detector should always be installed away from strong magnetic
fields.
- Avoid running high voltage wires near the loop detectors.
- Do not install the detector on vibrating objects.
When the control box is installed within 10 metres of the loop,
normal wires can be used to connect the control box to the loop.
More than 10 metres requires the use of a 2 core shielded cable. Do
not exceed 30 metres distance between control box and loop.
Loop Installation:
The loops are sealed using a “quick-set” black epoxy compound or
hot bitumen mastic to blend with the roadway surface.
Trouble Shooting:
Certification
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 | | | | |