D-R 220T
Visibility Monitor for road tunnels using optical transmission principle
Sensor for ventilation control system or fire alarm system. Reliable measurement parallel to the tunnel axis
- measurement parallel to tunnel axis, continuous measurement
- measurement along a distance of 10m, no spot measurement
- corrosion resistant against tunnel atmosphere
- determination and correction of the pollution of optical surfaces
- measuring head and reflector can be exchanged quickly N
- no tools required
- no re-alignment required
- signal transfer
- per analog signal and relay outputs
- per RS485 Modbus RTU
- hermetically sealed housing - no gas diffusion to optics or electronics
- dust protection tube prevents contamination of the optics
- long maintenance intervals
- quick and easy startup with or without PC
