Control Systems for Tunnels & Tunnel Lighting - Photometers



PRODUCTS >>> CONTROL SYSTEMS FOR TUNNELS & TUNNEL LIGHTING - Photometers
	Tunnel lighting control system adapts light intensity in the tunnel in accordance with outside lighting conditions. That allows tunnel entering driver's eyes to adapt to new light conditions with minimum shock possible. Basic system consists of several photometers and light control unit. Main photometer is placed before tunnel entrance to detect light intensity that driver's eyes are exposed to before entering. In the tunnel photometers detect light intensity inside the tunnel. It varies due to outside light conditions and traffic density. Control unit uses data from photometers to adapt tunnel lights all along tunnel tube.

Photometers are ready for pole or wall mounting. Fixed they are flexible in X and Y axis. FM-1 and FM-4 have compact design, suitable for toughest climate conditions. Self cleaning device is also available. >>>PHOTOMETER FM-4 with 4-level 230 V / 5 A output FM-4 is a tunnel entrance photometer with 4 - level light controller built in. It can work as stand-alone tunnel lights' controlling device and is especially suitable for use in one or two tube-tunnels up to 400 m. Light levels are user programmable via PC. >>>PHOTOMETER FM-1 with current / voltage output FM-1 is road / tunnel analogue photometer with current or voltage output. It is designed for larger road / tunnel light control systems. Current and voltage output can be either linear in one or three ranges or logarithmic function of incident light. All parameters are user programmable via PC.

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