Vaisala Inc Vaisala manufactures a wide range of premium technologies for the measurement of Moisture, Hydrogen and Temperature for Transformer Oil, Dissolved Gas Analysis, Dew Point for Transformer Drying, and Dew Point, Pressure and SF6 Density for Switch Gear. We also provide Lightning Detection and Outdoor Weather Measurement solutions. Our transmitters provide real-time online information about the condition of transformers, circuit breakers and other critical substation components. With data at you...