Chapter 2 Product Overview; Introduction To Vaisala Present Weather Detector Pwd22; Table 3 Model And Performance Table - Vaisala PWD22 User Manual

Chapter 2___________________________________________________________ Product Overview
CHAPTER 2
PRODUCT OVERVIEW
Introduction to Vaisala Present Weather
Detector PWD22
VAISALA ________________________________________________________________________ 13
This chapter introduces Vaisala Present Weather Detector PWD22
features, advantages, and the product nomenclature.
PWD22 is an intelligent, multi-variable sensor for automatic weather
observing systems. The sensor combines the functions of a forward
scatter visibility meter and a present weather sensor. PWD22 can
measure the intensity and amount of both liquid and solid
precipitation. As the detector is equipped with a background
luminance sensor, it can also measure ambient light.
PWD22 suitable for automatic weather station applications especially
for low-power requirement installations.
Table 3 Model and Performance Table
Model
Visibility Sensor PWD10
Present Weather Detector PWD12
Visibility Sensor PWD20
Present Weather Detector PWD22
Present Weather Detector PWD22M For Vaisala TACMET stations
The versatility of PWD22 is achieved with a unique operating
principle. PWD22 measures an estimate of the precipitation water
content with a capacitive device Vaisala RAINCAP
combines this information with optical scatter and temperature
Performance
Visibility range 10 m ... 2000 m
Visibility range 10 m ... 2000 m
4 different precipitation types
Visibility range 10 m ... 20000 m
Visibility range 10 m ... 20000 m
7 different precipitation types
®
Rain Sensor and