PURSensors

SPECIFICATIONS

Reinforced against lateral extensions for increased
durability
Long lifetime
Very high detection accuracy for in-road version
achieved through the use of temporary hanger bars
to ensure a uniform installation height
Optional custom profile and length designs provide
trouble-free upgrade to optical fiber
Feeder cables are available in lengths up to 250
meters and with polyethylene reinforcement

Common applications are axle, dual tire and direction
detection, speed measuring, and vehicle classification

FEATURES

Only sensitive to vertical pressure
Ready to install PUR Sensor includes
sensor element and a fiber optic feeder
cable that is spliced directly to it andterminated with fiber optic connectors.
The direct in-road sensor installation is
performed such that the top is flush to theroad surface while the bottom is
encapsulated in a 2" wide channel using
approved road filler material and reusable
hanger bars
Standard warranty of 2 years or 6 million
axles, whichever comes first
Other versions of the PUR Sensor can beinstalled directly into existing treadle framesby following standard replacement
procedures.
Output via a Sensor Line dynamic or static
Optical Transmittance Analyzer.
Immune to electro-magnetic disturbances,
corrosion, and lightning

SENSOR SOLUTIONS /// PUR Sensors Rev 1

The Sensor Line PUR Sensor is a polyurethanebased, reinforced, fiber optic traffic sensor which is based on
the proven technology found in the legacy SPZ sensor. It has
been designed for permanent installation in concrete orasphalt roads.
There are three standard profiles which have beencreated for installation either directly into the road, or into
existing metal treadle frames designed for contact closure(switch type) sensors. The direct in-road sensor has a T
shape configuration to help ensure a fast and long-term
installation. The PUR Sensor can be installed in concrete orasphalt roads with FlexKrete, PU-200 or similar material
which provides optimal bonding between the sensor and theroad. The fiber optic core of the PUR sensor is based on thesame technology as the SPZ sensor. The wheel of a passing
vehicle causes a slight deformation of the sensor whichslightly decreases the optical transmittance of the opticalfiber. This transmittance change is detected by a Sensor Line
optical analyzer interface and is transformed into the signalsthat are used for processing traffic data.
Other configurations of the sensor are available such as a
keystone shape or a larger T-shape. These have been
designed as direct drop-in replacements for resistive andcontact closure treadles into the existing metal holding plates.
Furthermore, a sensor can be equipped with several different
lengths for the feeder cables including a high strength
reinforced cable (recommended for lengths exceeding 100m). Other profiles and cable entry/exit locations are possible
with precise measurements and a retooling charge.

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PERFORMANCE SPECIFICATIONS
Dimensions
Parameter

Typical ValueUnits

Up to 4m50 (tip) / 100 (feeder joint)mm

Width30 (Top) 38 (Bottom)

mm

Height21mm

Weight (without feeder)

1kg/m

Outer Dimensions

2.5x5.0mm

Lengths (Standard) #15/25/35/50

m

12g/m

205 (46)

N (lbs.)Sensor Element (including splice protections)
LengthInsensitive End Zones

Fiber Optic Feeder Cable*

WeightMaximum Short Term Pull Tension
Fiber Connectors FSMA-905
Standard Type: Crimp and Cleave

SL 4430-C

Dimension

34mm

Max. Diameter

8.5mm

Optional:
Type: Multiuse

SL-RP2.5-C

Dimension

41mm

Max. Diameter

8.5mm

Core Diameter

200µm

Cladding Diameter

230µm

Buffer Diameter

500µm

Numerical Aperture

0.3*PE Enforced Feeder Cable also available
Optical Data
Sensor WaveguideTyp. 3.5 +1.5/m

dBCore Diameter

200µm

Cladding Diameter

230µm

Buffer Diameter

500µm

Numerical Aperture

0.3Sensor Attenuation
Feeder WaveguideFeeder Attenuation @ 850 nm

SENSOR SOLUTIONS /// PUR Sensors Rev 165/2018

dB/km

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Performance
Storage Temperature Range

0 to +40°C

Operating Temperature Range-30 to +85°C

25mm

Minimum Bend Radius Feeder Cable
Warranty

2 year or 6 million axles

MECHANICAL DIMENSIONS in mm

Standard PUR Sensor

Keystone ShapeSENSOR SOLUTIONS /// PUR Sensors Rev 15/2018

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MECHANICAL DIMENSIONS in mm (CONT)

Larger T ShapeNORTH AMERICA

ASIA

Measurement Specialties, Inc.,a TE Connectivity Company
Phone +1-800-522-6752
Email: customercare.hmpt@te.com

Measurement Specialties (China), Ltd.,a TE Connectivity Company
Phone: +86-400-820-6015
Email: customercare.chdu@te.com

TE.com/sensorsolutions
Measurement Specialties, Inc., a TE Connectivity company.
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The information given herein, including drawings, illustrations and schematics which are intended for illustration purposes only, is believed to be reliable. However, TE Connectivity makes
no warranties as to its accuracy or completeness and disclaims any liability in connection with its use. TE Connectivity‘s obligations shall only be as set forth in TE Connectivity‘s Standard
Terms and Conditions of Sale for this product and in no case will TE Connectivity be liable for any incidental, indirect or consequential damages arising out of the sale, resale, use or
misuse of the product. Users of TE Connectivity products should make their own evaluation to determine the suitability of each such product for the specific application.
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TE Connectivity Ltd. family of companies

All Rights Reserved.

SENSOR SOLUTIONS /// PUR Sensors Rev 1

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