Single-Cut LRS Vehicle Detector with Direct Burial Sensor

The Loop Replacement System (LRS) features advanced 3-axis, magnetoresistive sensing technology. The sensor measures Earth's magnetic field and responds to disturbances caused by ferrous objects. Three sensing elements provide magnetic field measurement in the X, Y and Z axes, improving detection sensitivity. The LRS's exciting new technology provides a high-sensitivity, compact, and cost-effective solution for reliable vehicle detection.
The small size of the LRS allows for easy installation in pavement (below grade) with a single saw cut. It provides cost savings on labor and materials when compared to the multiple cuts and corner reliefs required for the installation of inductive loops. The rugged sensor is also suitable for above grade installations, making it ideal for use in confined areas or hidden in non-ferrous architectural components for security purposes.

LRS Specifications:

• Sensing technology: 3-axis magnetoresistive
• ULTRAMETER display: 10 levels of sensitivity: 0-9
• Axis sensitivity: 512 counts/gauss (typical)
• Environmental tracking: Automatic compensation
• Local magnetic field nulling: Averages local field signature in any sensor orientation
• Detection range: 5" (1.5m)
• Power/fault indicator: Green LED
• Detect indicator: Red LED
• Pulse/presence: Allows the relay/NPN output to send either a pulse output or have constant presence
• Detect-on-step: Requires vehicle to stop for a minimum of 1 second (1-2s typical)
• Outputs: SPDT relay/NPN - open collector (controller), NPN - open collector (sensor)
• Output ratings: Relay: 1A @ 24VDC...120VAC NPN: 50 mA max (controller), 50 mA (sensor)
• Connection: 10 position screw terminal (controller), 5 conductor direct burial (sensor)
• Operating environment: 40o C...82o C (-40o F...180o F) 0...95% relative humidity
• Housing: ABS (controller), PVC (sensor)
• Environmental rating: IP30 (controller), IP69K (sensor)
• Power supply: 12-30 VDC and 24 VAC (controller), 12-30 VDC (sensor) 
• Current draw: 40 mA max (controller), 10 mA max (sensor)
• Supply protection circuitry: Reverse polarity and fuse protected
• Dimensions: 3" x .9" x 2.75" (controller), 4" x 1" (sensor)
• 50' long lead
• See documents under "Manuals" for more information

LRS Features:

• Three-dimensional presence detection - select X, Y and/or Z axis independently
• Control module for programming and relay contact output
• Stand-alone sensor stores background and settings in a non-volatile memory
• Single cut, low-cost installation
• ULTRAMETER™ sensitivity display for easy set-up
• Fast response for high-speed detection
• Logic Interface available for extended range, directional logic and more
• DETECT-ON-STOP™ (DOS® ) feature will allow detection only when a vehicle has come to a complete stop near the sensor. This EMX exclusive technology ignores cross traffic in tight spaces
• Direct Burial Sensor (part #LRS-DB-50) and LRS Controller (part #LRS-C1) available separately

How is the LRS Flat Pack Sensor installed?
For vertical installation, drill a 7" x 1.5" hole in the surface with a 5/16" x 2" deep saw cut exiting the cutout for the communications /power cable. Backer rod should be placed at a minimum of every 10-14". Hard epoxy pavement sealant should then be used to fill the cable and sensor cavities. Make sure pavement sealant does not extend above roadway surface.

Applications where EMX LRS can be used:

• Car washes
• Automatic gates and doors
• Drive thru windows
• Parking and traffic monitoring
• Loading docks