Asia-Teco PD132 Vehicle Loop Detector – Single Channel Gate
Asia-Teco PD132 Vehicle Loop Detector – Single Channel Gate
Asia-Teco PD132 Single Channel Inductive Vehicle Loop Detector
The Asia-Teco PD132 Vehicle Loop Detector is a reliable, single-channel inductive loop detection unit engineered for automated gate systems, parking access control, and traffic management. With a lightning-fast 10ms reaction time, four adjustable sensitivity levels, and broad voltage compatibility (AC 230V / 115V or DC/AC 24V / 12V), this detector integrates seamlessly into both residential and commercial access systems.
Key Features
- Single-Channel Detection: Dedicated channel output via relay (240V/5A) for clean, reliable signal control.
- 4-Level Adjustable Sensitivity: Fine-tune detection to match your loop size and vehicle type — from motorcycles to large trucks.
- Fast 10ms Reaction Time: Near-instantaneous vehicle detection keeps traffic flowing smoothly.
- Wide Frequency Range: 20 kHz to 170 kHz operating frequency minimizes cross-talk with nearby detectors.
- Flexible Power Supply: Accepts 230V AC, 115V AC, 24V DC/AC, and 12V DC/AC — check the label on your unit.
- Wide Operating Temperature: Performs reliably from -20°C to +65°C, suitable for demanding outdoor environments.
- LED Status Indicators: Green channel LED and red power LED provide instant visual feedback during tuning, normal operation, and fault detection.
- Self-Healing Fault Detection: If a recoverable loop fault occurs, the detector continues operating and alerts via flashing LED.
- Signal Holding: Unlimited signal hold, or automatically releases after 10 minutes if the loop is permanently covered.
- Compact Housing: Slim 78 × 40 × 108 mm enclosure fits neatly in standard control cabinets.
Technical Specifications
| Model | PD132 (120B) |
| Supply Voltage | 230V AC / 115V AC / 24V DC/AC / 12V DC/AC |
| Voltage Tolerance (AC) | +10% / -15% |
| Voltage Tolerance (DC) | ±15% |
| Power Consumption | 4.5 VA |
| Output Relay | 240V / 5A |
| Reaction Time | 10 ms |
| Frequency Range | 20 kHz – 170 kHz |
| Sensitivity Levels | 4 adjustable increments |
| Loop Inductance | 50 µH – 1000 µH (ideal: 100 µH – 300 µH) |
| Max Loop Connection Wiring | 20 meters (twisted ≥20 times per meter) |
| Maximum Coil Size | 8 m × 1 m |
| Ground Sensing Lead | Best within 10 meters (twisted pair) |
| Operating Temperature | -20°C to +65°C |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | <90% (non-condensing) |
| Housing Dimensions | 78 × 40 × 108 mm (L × W × H) |
| Country of Origin | Made in Mainland China |
Installation Guidelines
For best results, install the detector in a weatherproof enclosure as close to the inductive loop as practical. Keep it away from heat sources and maintain a minimum clearance of 10 mm from adjacent devices and enclosure walls. Use properly twisted-pair lead-in wire (twisted at least 20 times per meter) to minimise electrical interference. Key loop parameters to consider include loop shape, size, number of turns, and installation depth.
For general guidance on inductive loop detector systems and traffic control device standards, refer to the U.S. Federal Highway Administration. For workplace electrical safety best practices during installation, visit OSHA – Electrical Safety.
Frequently Asked Questions
Q: What types of access systems is the Asia-Teco PD132 vehicle loop detector compatible with?
A: The PD132 inductive vehicle loop detector is compatible with a wide range of automated gate systems, parking barriers, boom gates, and traffic control access points. Its relay output (240V/5A) connects to most standard gate controllers and parking management systems.
Q: How do I adjust the sensitivity on the PD132 loop detector?
A: The PD132 features four adjustable sensitivity increments, selectable via a dedicated switch on the unit. Higher sensitivity settings are ideal for detecting motorcycles or bicycles, while lower settings work well for standard passenger vehicles and trucks, reducing the chance of false triggers.
Q: What should I do if the green channel LED is flashing on the PD132?
A: A flashing green channel LED indicates a loop fault has been detected. If the fault is self-healing (e.g., a temporary interference event), the detector will continue to operate automatically. If the fault persists, check the loop wiring connections, verify the loop inductance is within the 50 µH – 1000 µH range, and ensure the lead-in cable is properly twisted.
Q: What is the maximum loop size supported by the PD132?
A: The PD132 supports a maximum coil size of 8 meters × 1 meter. The total loop inductance (including connection wiring) should fall between 50 µH and 1000 µH, with 100 µH to 300 µH being the ideal range for optimal performance.
Q: Is the PD132 suitable for outdoor installation in extreme temperatures?
A: Yes. The PD132 is rated for operating temperatures from -20°C to +65°C, making it well-suited for outdoor gate and parking applications in a wide range of climates. Always mount the unit in a weatherproof enclosure to protect it from direct moisture exposure.