HY-CDP22E Luminance Monitor

The HY-CDP22E luminance monitor measures the level of luminance, or brightness, created by natural light at the tunnel entrance / exit to ensure that the visual perception of drivers will be maintained, both day and night, by avoiding sudden variations in lighting levels and potential “black hole effect” when entering and exiting a tunnel.

Brief Introduction

The HY-CDP22E luminance monitor measures the level of luminance, or brightness, created by natural light at the tunnel entrance / exit to ensure that the visual perception of drivers will be maintained, both day and night, by avoiding sudden variations in lighting levels and potential “black hole effect” when entering and exiting a tunnel.

The HY-CDP22E luminance monitor uses a specially designed, highly light-sensitive photocell, filtered to provide a spectral response close to that of the average human eye, to react to changes in light levels within the tunnel environment. This reaction is virtually instantaneous. The light receptor measures the average luminance within an acceptance angle subtending 20 Deg.

Features

  • CIE Approved measurement technology
  • Accurate measurement of tunnel entrance luminance
  • Designed specifically for tunnels 
  • Rugged construction
  • Simple installation/operation
  •  Isolated 4-20mA analogue outputs 
  • Alarm relay output

Technical Specification

Detector

Silicon photo diode

Measuring Angle

20°

Measurement Range

0-7000 cd/m2 

other measure range can be customized.

Accuracy

±3%

Voltage

100-240VAC

Power Consumption

15 Watt(include heating)

Output

RS485(MODBUS)

4-20mA(Isolated)

two way relay 2A@24VDC

Protection

IP66

Operating Temperature

-40~70℃

Operating Humidity

0-100%

Materials

Powder coated steel

Dimensions

370x189x167mm L x W x H

Weight (each)

3.5 Kg

Mounting

Adjustable brackets(optional)

Warranty

24 Months

Site Photos