Casella sensors for weather monitoring

• Casella anemometer
• frictionless optical encoder design
• low starting velocity
• low power consumption
• available with heater for severe environments
• 0 t 5 volt output from optical sensor
• output frequency proportional to wind speed
• accuracy +/- 3%
• part of the Nomad weather system kit

Casella wind speed sensor

Part # 178032C Anemometer with heater

• Casella wind vane
• high accuracy and low friction
• uses giant magneto resistive (GMR) principle
• microprocessor based design
• highly reliable in use
• available with heater for severe environments
• 0 to 1.8 volt analog output
• serial data output for long transmission paths
• accuracy +/- 2%
• part of the Nomad weather system kit

Casella wind direction sensor

Part # 178036C Direction sensor with heater

• Casella combined air temperature and relative humidity sensor
• complete with radiation screen
• unaffected by condensation
• capacitive hygrometer is largely free from drift
• platinum resistance thermometer complete with electronics to linearize the signal output
• temperature measurement range from -40 F to 140 F
• accuracy +/- 0.5 °F at 32 °F
• RH measurement range from 0 to 100 %
• accuracy +/- 3%
• part of the Nomad weather system kit

Casella combined air temperature and RH% sensor

Part # 187012B Temp & RH% sensor

• Casella solar radiation sensor
• measures the intensity of the global solar radiation in Watts per square meter
• measures in direct and diffused sunlight
• uses a silicon photo diode in a weather proof housing
• spectral range from 0.4 to 1.1 µm wavelength
• part of the Nomad weather system kit

Casella radiation solarimeter sensor

Part # 187010B Solarimeter sensor

• Casella Rainfall gauge
• uses tipping bucket method
• complete with 28 ft cable to clear local obstructions
• pulse output for every 0.2 mm rainfall captured
• supplied with three leveling screws and spirit level for accurate positioning on site
• all aluminum construction for long life
• accuracy +/- 1%
• part of the standard Nomad weather system kit

Casella tipping bucket rainfall gauge

Part # 187060D Tipping bucket rain gauge

• Casella soil temperature sensor
• special sensor connects to Nomad by accessory junction box part # 187057D
• positioned by digging a small hole to locate sensor in ground
• avoids requirement for multi-length sensors
• can be used to measure surface temperature by shallow installation
• temperature measurement range from -40 F to 140 F
• accuracy +/- 0.5 °F at 32 °F
• part of the Nomad weather system

Casella soil temperature sensor

Part # 120620B Soil temp sensor

• Casella leaf wetness sensor
• special sensor connects to Nomad by accessory junction box part # 187057D
• uses three carbon electrodes to measure presence of water
• unaffected by normal moisture being present
• sensing element 0.5 x 1.25 in area
• part of the Nomad weather system

Casella leaf wetness sensor

Part # 187001B Leaf wetness sensor

• Casella grass temperature sensor
• special sensor connects to Nomad by accessory junction box part # 187057D
• measures the grass minimum temperature
• shield included to prevent errors from direct sunshine
• part of the Nomad weather system

Casella grass temperature sensor

Part # 120650B Grass temp sensor