Visibility Sensor PWD50

Dependable operation of automated observation networks is a must today. Maritime observing systems need to work in inhospitable environments and also meteorological institutes face tough productivity and performance prerequisites. Vaisala Visibility Sensor PWD50 answers these needs with a mixture of robustness, dependability, versatility, and reliability. PWD50 measures visibility from 10 m to 50 km (from 32 ft to 31 mi).

Accurate Visibility Measurement

Calibrated with reference to a highly accurate transmissometer, PWD50 uses the proven forward-scatter measurement principle to measure meteorological optical range (MOR). The sensor optics are well-protected against contamination: the optical components point downwards, and hoods protect the lenses against precipitation, spray, and dust. This weather-proof design helps to sustain accurate measurement results.

Versatility

PWD50 architecture allows for easy integration to existing or newly designed systems in a cost-efficient manner.

The sensor can be mounted on existing masts in many ways. The electrical interfaces are in a single cable. Versatility is further enhanced with various options, such as pole masts, a selection of mounting adapters, power supply cabinets, and a modem for long distance communication.

Robust and Dependable

The downward-facing sensor hoods protect the optical surfaces from contamination, resulting in low maintenance needs and costs. The optional hood heaters prevent the build-up of ice and/or snow in the optical path.

Solid Track Record

Thousands of PWD series sensors have been installed all around the world. They have undergone rigorous test programs. In the field, the sensors have demonstrated very low failure rates. They have proved their robustness in the harshest climates and most demanding conditions, ranging from offshore to desert and from airport to roadside.