Inductive Loop Detectors

Our range of inductive loop vehicle detectors are designed for many applications. These vehicle induction loops are extremely robust and can identify the presence of a vehicle over a wire loop buried under the road surface and signal its presence to a control device.

3-Series Single Channel Vehicle Detector

Identifies the presence of vehicles by means of an inductive loop buried under the road. The range includes PD130,…

› View Details

3-Series Dual Channel Vehicle Detector

One of the most critical components of the whole vehicle access control system…

› View Details

DU100 Vehicle Detector Diagnostic Unit

Hand held test instrument capable of providing installation/service personnel with positive verification of the co…

› View Details

8-Series Slimline Single Channel Parking Detector

The 8 series, Nortech’s new flagship Parking Vehicle Detector addresses the market’s need for a slimline, advanced…

› View Details

8-Series Slimline Dual Channel Parking Detector

The 8 series, Nortech’s new flagship Parking Vehicle Detector addresses the market’s need for a slimline, advanced…

› View Details

8-Series Slimline Single Channel Traffic Detector

The 8 series, Nortech’s new flagship Parking Vehicle Detector addresses the market’s need for a slimline, advanced…

› View Details

8-Series Slimline Dual Channel Traffic Detector

The 8 series, Nortech’s new flagship Parking Vehicle Detector addresses the market’s need for a slimline, advanced…

› View Details

DU800 Detector Diagnostic Unit

The DU800 is a hands-free, WLAN diagnostic unit and is compatible with Nortech’s latest 8 series parking detectors…

› View Details

Inductive Loop Detectors for Vehicle Detection and Control

Inductive loop detectors monitor vehicle activity above buried wire loops installed beneath road surfaces, providing reliable presence and movement detection for parking barriers, gates, traffic control, and vehicle counting applications. Nortech offers two detector families engineered for different operational requirements. The 3-Series provides proven reliability in compact boxed housings with front-panel configuration switches, ideal for straightforward barrier control and safety loop applications.

The advanced 8-Series features slimline DIN-rail mounting with remote configuration via the Integr8 mobile application and WiFi diagnostic unit. Available in parking and traffic variants, 8-Series detectors offer enhanced capabilities including Automatic Frequency Selection, power fail memory, tailgating detection, and vehicle classification. Traffic detectors add configurable triggers for speed, length, and headway measurements.

Both series support single and dual-channel configurations with flexible power supply options. All detectors incorporate Automatic Sensitivity Boost for optimal performance and include comprehensive diagnostic capabilities. With robust construction and five-year warranties on 8-Series models, these detectors deliver dependable vehicle detection across demanding applications.

Comparison Table

Product	Mounting	Configuration	Key Features	Best For
3-Series Parking Single Channel	Boxed housing, plug-in relay mount	Front panel DIP switches	Proven reliability, Automatic Sensitivity Boost, permanent presence selection, loop frequency indication, DU100 diagnostics	Simple barrier control, basic safety loops, straightforward parking applications, budget-conscious projects
3-Series Parking Dual Channel	Boxed housing, plug-in relay mount	Front panel DIP switches	Two independent detection channels in single unit, proven reliability, compact footprint	Dual-lane gates, entry/exit monitoring with single detector, space-constrained installations
8-Series Parking Single Channel	Slimline DIN-rail mount	WiFi via Integr8 app on smartphone/tablet	Remote configuration, Automatic Frequency Selection, power fail memory, tailgating detection, fault identification, WiFi diagnostics (DU800), relay or opto outputs	Modern installations requiring remote management, barrier control with advanced diagnostics, professional parking facilities
8-Series Parking Dual Channel	Slimline DIN-rail mount	WiFi via Integr8 app on smartphone/tablet	Two channels, link up to 4 dual-channel units (8 loops total), synchronised operation, vehicle classification, configuration backup	Multi-lane parking facilities, complex access control sites, installations requiring centralized loop management

Frequently asked questions

What's the difference between 3-Series and 8-Series inductive loop detectors?

3-Series detectors offer proven reliability with front-panel DIP switch configuration in boxed housings, suitable for straightforward applications. 8-Series detectors provide advanced features including remote WiFi configuration via smartphone, slimline DIN-rail mounting, and enhanced diagnostics. The 8-Series includes Automatic Frequency Selection that automatically optimises operating frequency, power fail memory to retain vehicle presence during outages, and the ability to link multiple detectors. 8-Series models come with comprehensive five-year warranties and simplified stock management with only two power variants.

How does Automatic Frequency Selection improve installation?

Automatic Frequency Selection examines the detector's electromagnetic environment and automatically sets the optimal operating frequency to minimise interference from adjacent loops or electrical noise. This eliminates manual frequency adjustment during installation, significantly reducing setup time and technical expertise required. In multi-lane installations where multiple detectors operate proximity, AFS ensures each detector operates on interference-free channels. This feature particularly benefits complex parking facilities and access control sites where electromagnetic interference could compromise detection reliability without causing installer headaches.

What applications require parking versus traffic detectors?

Parking detectors excel in barrier control, gate automation, safety loops, and vehicle counting where presence detection is primary. They monitor whether vehicles occupy detection zones, triggering barriers to remain open or providing anti-crush safety. Traffic detectors add speed measurement, vehicle length classification, and headway timing capabilities essential for traffic management applications. Use traffic detectors for speed enforcement zones, vehicle classification systems, traffic flow monitoring, and applications requiring differentiation between vehicle types or measuring distances between successive vehicles through detection zones.

How does power fail memory protect vehicles and equipment?

Power fail memory on 8-Series detectors retains vehicle presence information during power interruptions, immediately recognising occupied loops when power restores. This prevents barriers or bollards from activating whilst vehicles occupy detection zones, avoiding potentially dangerous collisions or equipment damage. The detector can also determine if vehicles entered detection zones during power outages, ensuring accurate system state upon restoration. This critical safety feature proves essential for rising bollards, barrier systems, and any application where unexpected activation during power restoration could cause vehicle damage or safety hazards.

Can multiple loop detectors operate without interfering with each other?

Yes, modern loop detectors incorporate frequency management to prevent interference. 8-Series detectors feature Enhanced Automatic Frequency Selection with 32 available channels, automatically coordinating with nearby detectors to select interference-free frequencies. Up to four synchronised dual-channel 8-Series detectors can be linked together, sharing frequency information to optimise multi-lane installations. The 3-Series provides manual frequency indication through front-panel LEDs, allowing installers to select appropriate frequencies. This multi-channel operation enables reliable detection in complex sites with numerous detection zones operating simultaneously without crosstalk or false triggering.

Trusted by these organisations

Nortech systems secure doors, gates and car parks for manufacturers, retailers, banks, government departments, leisure operators and sports clubs across the UK.