Vaisala

The Vaisala CL31 ceilometer measures the cloud height in three layers using a pulsed laser diode LIDAR technology. The measurement range is 7600 meter and measures the the cloud coverage in oktas using the built-in sky condition .

The Vaisala HMP155 temperature and humidity sensor provides reliable outdoor temperature and humidity measurements. The sensing elements are protected with a sintered teflon filter for protection against water and dirt. The HMP155 is normally installed in a DTR503 solar radiation screen.

The Vaisala PTB330 Pressure sensor is designed for a wide range of high-end atmospheric pressure measurement. The PTB330 can incorporate one, two, or three BAROCAP sensors for verification purposes.

The Vaisala PTU300 is a combined Pressure, Humidity and Temperature transmitter. The weather transmitter can be equipped with two pressure sensors for verification purposes.

The Vaisala PWD family offers a range of visibility instruments. The PWD uses a optical forward scatter to measure the visibility with a range of 2000 meters for the PWD12 and 20 000 meters in the PWD22. The present weather is available in SYNOP code format.

The Vaisala WMT700 is an ultrasonic wind sensor in a stainless steel enclosure. A selection of measurement ranges are available up to 90 m/s.