Product Details

1.Product

YG-TBQ9B tunnel illumination detector is a precision instrument for monitoring the brightness of tunnels. According to the changes in the illumination in the tunnel, the measured value is converted into a 485 signal output to the tunnel control system, and the lighting equipment is linked for intelligent control. It can accurately reflect the road illumination conditions to ensure safety. It is usually used in conjunction with the brightness detector outside the tunnel.

2.Technical Specifications

Mechanical Specifications

Weight

About 1kg (without bracket)

IP Rating

(Protection level)

IP66

Environment Conditions

Operation Temperature	-40～+80℃
Operation Humidity	0～100%RH

Performance

Interface output	RS485 / RS232 / 4～20mA
Communication protocol	modbus
Power supply	AC220V / DC12V
Working life	≥50000 hours
Installation method	Tunnel wall installation

Measurement performance

Name	Parameter
Measurement range	0～20000Lux
Measurement error	±1%
Measurement angle	Vertical≥20°, level≥20°

3.Performance

YG-TBQ9A tunnel external brightness detector uses high-precision silicon photocells as sensing elements. The light signal is converted into an electrical signal after passing through a cosine corrector and a filter to reach the sensing element, and then processed by a highly integrated circuit to output a 485 signal.

4.Feature

1) The photocell is calibrated at room temperature of 25℃, and the error is automatically corrected to <±1% in actual operation.

2) The linear relationship between light brightness and photocurrent is good, and it can respond instantly to light changes.

3) Multiple output modes are available, supporting RS485 and wired/wireless network communication.

4) Automatic temperature compensation, low temperature drift.

5) Waterproof and dustproof design, can withstand rain and direct water washing.

6) Internal heating function to prevent internal moisture from forming.

For more information, please contact me.