Passive Runway/Highway Surface Sensor Station - Model 5721-05
Passive Runway/Highway Surface Sensor Station - Model 5721-05

 

 

FEATURES:

 

 


 

DESCRIPTION:

The High Sierra Electronics RWIS Passive Runway/Highway Surface Sensor Station is an Environmental Sensor Station (ESS) that is NTCIP (National Transportation Communications for ITS Protocol) compliant, which simplifies integration with other field devices in an Intelligent Transportation Systems (ITS) Network.

Real-time anti-icing knowledge of the pavement surface state is necessary for making an informed decision on treatment and for message sign activation. The RWIS Passive Runway/Highway Surface Sensor Station - Model 5721-05 is an NTCIP compliant remote processing system for monitoring the actual road surface environment. The Passive Runway/Highway Surface Sensor Station is well suited for roadways, ice-prone bridges, elevated roadways (including entryways, parking garage ramps or loading docks), and other commercial applications.

The primary use of the Passive Runway/Highway Surface Sensor Station is for ice warning. The Passive Runway/Highway Surface Sensor Station consists of a Signal Processing Module, a Road Surface Sensor, an optional Deep Road Temperature Sensor, and Signal Conditioning Modules. The Passive Runway/Highway Surface Sensor Station's processor derives the state of the roadway surface by observing temperature and moisture phase change on the surface. Deep Road Temperature is useful in predicting icing where roadway mass is affected (i.e. overpasses and elevated roadways). It can also serve as a guide as to whether de-icing chemicals remain on the surface, or if reapplication is necessary.

Conditioned pavement sensor signals are applied to the Passive Runway/Highway Surface Sensor Station's Signal Processor/Controller board, which samples conditions and determines the roadway state (Dry, Wet or IceWatch). This surface condition as well as surface temperature, deep pavement temperature, and surface wetness are populated into the appropriate NTCIP 1204 (ESS) Object Identifiers (OIDs) and are transmitted by the Passive Runway/Highway Surface Sensor Station when the device address is polled.

The surface sensor element, Model 5721-51, is molded in a resilient epoxy compound with thermal properties that closely match the roadway surface. It works on thermally passive principles: no artificial heating or cooling is used that may alter the measured environment. The maintenance free design features corrosive- resistant electrodes to derive the presence of moisture on the roadway surface.


 

SPECIFICATIONS:

Temperature Range ...........................   -40° to 60°C (-40° to 140°F)
Temperature Accuracy ...........................   ±0.2°C (±0.4°F)
Temperature Resolution ...........................   ±0.1°C (±0.2°F)
Surface Status ...........................   2 (error), 3 (dry), 5 (wet), 8 (ice watch)
Operating Temperature ...........................   -40° to 60°C (-40° to 140°F)
Controller
     Data Format ...........................   NTCIP 1204v3 ESS
     Protocol Stack ...........................   Data Objects - SNMP - Null - PMPP - RS232
     Communications ...........................   Nine Pin D-SUB Connector, 9600 Baud
Power ...........................   12VDC@ 130mA (
Standby Battery ...........................   2.3AH Rechargeable - Sealed Gel Cell
Sensor Cable ...........................   15.2 m (50 ft) Standard Length (152.4 m (500 ft) Maximum)
Enclosure ...........................   ABS NEMA 4X
Dimensions ...........................   21.6x17.8x11.4 cm (8.5x7x4.5 inch)
Weight ...........................   2.4 kg (5.3 lbs)
Shipping Weight ...........................   3.2 kg (7 lbs)

 

ORDERING GUIDE:
HSE Warranty
General Terms and Conditions

Model 5721-05 ......... RWIS Passive Runway/Highway Surface Sensor Station (Includes Signal Processing Unit, Surface Sensor and Sub-Surface Sensor)

OPTIONAL:
Model 5720-02 ......... Extra Sensor Cable (1 foot Increments), factory only
Model 5721-51 ......... Surface Sensor (Replacement)


 

RELATED PRODUCTS:

Model 5470-02 ......... NTCIP MiniRWIS Remote Processing Unit 12VDC
Model 5400-03 ......... NTCIP RWIS Remote Processing Unit, 115VAC
Model 5439-00 ......... Surface Sentinel Fixed Road Surface Temperature Sensor
Model 5436-00 ......... Surface Sentinel Mobile Surface Temperature Sensor with Mobile Display Unit
Model 5435-00 ......... RWIS Mobile IceSight Remote Road Surface Condition Sensor
Series 5433 ......... IceSight Remote Road Surface Condition Sensor
Model 5721-01 ......... Parking Lot Surface Sensor
Other Weather Sensors


 

SUPPORT:

RWIS Passive Runway/Highway Surface Sensor Station - Model 5721-05: Application Article
Other Road Weather applications: Applications
RWIS Passive Runway/Highway Surface Sensor Station - Model 5721-05: Datasheet