8-Series Slimline Dual Channel Traffic Detector
TD282 / TD284 / TD282P / TD284P
'Quick and Simple Install DIN-Rail Mount with Wi-Fi Setup'
The 8 series, Nortech’s new flagship Parking Vehicle Detector addresses the market’s need for a slimline, advanced vehicle detection solution. The powerful architecture facilitates sophisticated algorithms ensuring robust and reliable detection every time. The relay and opto outputs are fully configurable, allowing for alarms and alerts on desired events. Nortech’s Automatic Frequency Selection (AFS) algorithms have been refined and optimised resulting in simplified setup and installation of complex multi-lane traffic sites.
PRODUCT FEATURES & BENEFITS
The new DU800 wireless diagnostic unit allows for detector configuration and installation feedback of 8 series detectors on any iOS or Android device. This eliminates the need to adjust any mechanical interfaces once the unit has been installed. The DU800 also allows for vehicle profile streaming.
The new slimline, DIN Rail mount housing allows for more physical connections than the traditional relay base.
Like its forebears, the 8 series detectors simply work, offering peace of mind in even the most complex installation.
The TD280 supports two loops with either relay or opto outputs.
Features
- Slimline - Can be installed in even the most physically constrained environments
- AFS - Automatic Frequency Selection (AFS) sets the optimal operating frequency to ensure minimal interference and maximum reliability
- PowerFail Memory - In the event of a power failure, the TD280 will retain the presence of the vehicle when power is restored
- Diagnostics - Comprehensive, wireless diagnostics allow for accurate diagnosis of loop and installation problems as well as configuration adjustments to eliminate issues using Nortech’s DU800 and Integr8 App.
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Contact Us
+44 (0)1633 485 533
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Product CatalogueSpecifications
| Self-tuning range: | 20μH to 1000μH |
| Sensitivity: | Ranging from 0.01% ΔL/L to 5% ΔL/L Automatic Sensitivity Boost (ASB) is selectable |
| Frequency: | Automatic Frequency Selection (AFS) or select from 6 frequency bands 30-150kHz (Frequency is determined by loop geometry) |
| AFS: | Automatically evaluates all frequency bands on startup and selects the most suitable in the given environment based on signal strength and noise |
| Response Time: | Detect: < 30ms ±1ms Undetect: < 30ms ±1ms |
| Presence Time: | Permanent or limited selectable per channel |
| Drift Compensation: | Incorporated method of tracking changes caused by environmental conditions at a rate approximating 1% ΔL/L per minute |
| Anti-locking: | Incorporated algorithm accommodates the influence of positive inductance changes to avoid detector lock-up |
| Relay Outputs: | 2 programmable relays with NO, NC and COM connections exposed. Options for presence or pulse, pulse on detect, undetect or fault and each relay has configurable Filter, Delay and Extend options. |
| Relay Mode: | Relays can be configured to operate as Fail Safe or Fail Secure |
| Opto Outputs: |
3 Opto outputs provided as an alternative to relays. Each is individually configurable. |
| Protection: | Polarity protection, loop isolation transformer, zener diode clamping, gas discharge tubes, 50-60Hz Noise Rejection |
| Power: | 12 - 24V ±10% (AC/DC ) 90V - 230V ±10% AC 50/60Hz |
| Connections: | DIN Rail mount 3 x 3 Way Connectors and 1 x 4 Way connector |
| Operating Temp.: | -40°C to +80°C |
| Dimensions: | Maximum outer dimensions are 94mm x 94mm x 22.5mm |
High-Speed Dual-Loop Detection for Traffic Management and Speed Measurement
The 8-Series Dual Channel Traffic Detector brings industrial-grade vehicle sensing to traffic management applications where response speed and accuracy determine system performance. Engineered for traffic signal control, speed measurement, vehicle classification, and counting applications, the TD280 delivers sub-30ms detection response—essential for accurate vehicle counting at highway speeds and responsive signal phase changes at busy intersections.
This detector excels in demanding traffic environments including toll plaza approach lanes, weigh station entry points, highway ramp metering systems, and urban intersection control. The dual-channel architecture enables speed-over-distance calculations, axle counting for vehicle classification, and directional flow monitoring. Whether deployed in a roadside cabinet at a motorway junction or integrated into an intelligent transport system (ITS) at a smart city intersection, the TD280's robust protection against electrical transients and temperature extremes ensures continuous operation in exposed outdoor installations.
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Fast Response
Sub-30ms detect/undetect response enables accurate counting and speed measurement at highway velocities.
Direction Logic
A-B directional sensing distinguishes forward from reverse travel for traffic flow analysis.
Multi-Output
2 programmable relays plus 3 opto outputs allow flexible integration with signal controllers and counters.
Extreme Range
Operates reliably from -40°C to +80°C for year-round deployment in exposed roadside locations.
The TD280 is optimised for traffic applications with faster response times (sub-30ms vs sub-58ms for parking). This enables accurate vehicle detection at highway speeds required for counting, speed measurement, and signal control.
Yes, using both channels with a known loop separation distance, speed-over-distance calculations can be performed. The fast response time and dual independent channels enable accurate speed measurement up to highway velocities.
The TD280 includes loop isolation transformers, zener diode clamping, gas discharge tube protection, polarity protection, and 50-60Hz noise rejection—essential for roadside installations near high-voltage equipment.
Configuration is performed wirelessly using the DU800 diagnostic unit and Integr8 smartphone app. This allows technicians to adjust sensitivity, frequency, relay modes, and output configurations without opening the cabinet.
Outputs can be configured for presence mode or pulse mode, with triggers including detect, undetect, fault, master fault (opto only), A-B logic forward, and A-B logic reverse. Each relay supports configurable filter, delay, and extend options.
Case Studies
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