Product

Product Tunnel Instrumentation Equipment

VI/CO measurement meter

The density of the visible distance and carbon monoxide (CO) inside the tunnel is measured to provide the measurement value to the ventilation control system for maintaining the contamination at certain level or below inside the tunnel in a way of providing pleasant tunnel environment and securing the view for safe operation for drivers.

System configuration
Major characteristics
  • Holding high precision with the dual optic penetration method
  • Long instrumentation distance with expandability
  • SW calibration function
  • Use of gas shell for calibration for the periodic calibration
  • LED ignition to check the arrangement condition
  • Available to measure diverse name substance by replacing the luminiscence part
  • Effective ventilation system operation by real time data transmitting and storage
  • Available to inspect with remote access by the central control device
Specification
Category Spec
Carbon monoxide Scope of measurement 0 ~ 300ppm
Accuracy ± 2ppm
Resolving power 1ppm
Visible distance Scope of measurement 0 ~ 15 x 10 / m
Accuracy ± .0.1%
Resolving power 1 x 10 / m
Other specifications Output conditions 4 ~ 20mA, RS485
Supplied power AC 220 V 60Hz
Air-tightness IP 65
Installation standard Install in a place about 150m from the entry of tunnel pit mouth
Install in a place where not influence of jet air stream and natural optics may reach
Installation interval 10 ~ 20m
Instrumentation indication communication device Input signal 4 ~ 20mA, RS485, DI (4Points)
Ooutput signal RS-232/422/285 Modbus

Traffic volume meter

- Doppler Radar + ultrasound wave measurement method
- PIR power save
- Vehicle type data analysis on the instrument

Measurement method
Major characteristics
  • Vehicle speed : Measuring the vehicle speed by the Doppler radar
  • Vehicle type : Profile measurement of vehicle by the ultrasound wave
  • Power save by the operation option by the PIR
Classification of vehicle type
Model TT293 TT295 TT298
Class Description 2+1 2+0 5+1 8+1
Car 32 32 1 7
Motorcycle 10
Delivery van 11
Not identified 6 6 6
Iorry/truck 33 3 3
Iorry/truck width traler 4 8
Articulated lorry/semi-trailer 9
Bus 5 5
Car with trailer 2 2
Specification
Category Spec
Measurement method Doppler Radar + Ultrasound wave + PIR
Sensor part Dual Channel
Output signal RS 485
Accuracy 3%(> 100Km/h)
3Km/h(< 100Km/h)
3% (Counting)
Supplied power 12V DC (100mA)
Air-tightness IP 64
Installation standard Install one at a time for each vehicle lane in the tunnel entry part

Wind speed meter for Wind direction

Structure
Major characteristics
  • Holding high precision with the dual optic penetration method
  • Expandable instrumentation distance
  • SW calibration function
  • Use of gas cell of calibration for periodic calibration
  • LED ignition available to check for the arrangement condition
  • Available to measure by various pollutant substances with the replacement
  • Effective ventilation system operation by the real time data transmitting and storage
  • Available to inspect with the remote access by the central control device
Specification
Category Spec
Measurement method Ultrasonic transition time
Route distance Up to 20ml
Installation angle 30 ~ 60º, typical 45º
Scope of measurement -20 ~ +20 ㎧
Accuracy ± 2 % of full range
Output condition 4~20mA, optional Modbus
Supplied power 115~230V, 50/60 Hz, 50VA
Air-tightness IP 65
Installation criteria Measuring range The wind velocity is assumed to be the same in all sections of the tunnel
Install around the VICO instrument in the maintenance aspect
Install in the central part and exit part of the tunnel for accurate measurement figure

Luminance meter

In order to operate safely by overcoming the inapt phenomenon occurring at this time of automobile operation before and after entering into the tunnel, following the tunnel light standard (KS3703), it is measured for the external brightness and internal brightness to control the panel board to ignite the established light circuit.

- KS 3703 tunnel light standard brightness control
- KS C 7613 brightness measurement method application
- 8-phase light circuit output
- Basic interior for the auto temperature adjuster

Measurement method
Major characteristics
  • A total of 4 units for brightness or illumination sensor connection (1 CH, 2 CH, 3 CH and 4 CH)
  • Available for monitoring and control in independent maneuvering panel and central control device
  • Available for washer/wiper unit option for independent cleansing function
Specification
MAYER1600 Main controller
Classification Spec
Input Brightness and illumination for 4 CH
Output 8-phase optic insulation output
Parameter Adjustment in accordance with the field condition
Monitoring control LCD panel of main controller
Central control device
Installation location Built-in light writch board
Built-in separately independent panel
Built-in RTU panel
TS-101 Brightness sensor
Classification Spec
Measurement element Silicon diode photo cell
Scope of measurement 1∼6,500 cd/㎡
Accuracy ± 1 %
Supplied power 220V AC or 24V DC
Height of installation 4m
Output condition 4~20mA
Special function HEATING UNIT (Built-in auto temperature adjuster)
Air-tightness IP 65
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