• Measures solar radiation for evapotranspiration (ET) and Temperature/Humidity/Sun/Wind (THSW) Index.
• Diffuser element and housing are carefully designed for accurate cosine response.
• Silicon photo diode provides good match to solar spectrum.

• Watermark® soil moisture sensor uses electrical resistance to measure the moisture level of the soil. Does not require periodic maintenance during the growing season. Simply bury at the desired depth, then monitor moisture levels throughout the season.
• The Soil Moisture Sensor must be connected via a Leaf & Soil Moisture/Temperature Station (#6345) (up to four sensors), or an EnviroMonitor Node.
• Includes 15′ (4.6m) cable.

• Use to monitor the level of surface moisture on foliage, with range from 0 (completely dry) to 15 (saturated).
• The Leaf Wetness Sensor must be connected via either a Wireless Soil Moisture/Temperature Station (#6345 or 6345CS), or an EnviroMonitor Node (#6810). Includes 40′ (12 m) cable.

• Add an additional wind station to your Vantage Pro2 or Vantage Vue system with a Sensor Transmitter and WeatherLink Live.
• Includes 40’/12m cable.
• One-year manufacturer’s warranty.

• Measures the sunburning portion of the UV spectrum. Allows you to display UV index, dose rate, and daily and accumulated dose.
• Diffuser provides excellent cosine response.
• Measures global solar UV irradiance, which includes both directly transmitted and scattered UV.
• Transducer responds only to radiation in the region of interest and is stable in the presence of heat and humidity.
• Cutoff ring with a comb structure for cosine response of ± 4% FS.
• Two-piece housing minimizes radiation heating, allows convection cooling of the sensor, and prevents the trapping of water or dust.

What is a UV sensor?

A Davis Instruments UV light sensor measures the intensity of ultraviolet light in the 280-360 nanometer range, which is the wavelength most responsible for damage to human skin. Davis makes two different UV sensors. One measures UV light in the range that is of concern to human health, whereas the #6450 Davis Solar Radiation Sensor measures light in the 300 to 1,100-nanometer range. This is an excellent sensor for measuring solar irradiance for agricultural applications.

How does a UV sensor work?

The sensor collects UV light and converts it to an electrical signal. Two types of light sensors are available. One uses a photodiode and the other uses a photoresistor.

• Photodiode-type UV sensor

  A photodiode-type UV sensor measures illuminance. When light strikes the photodiode, it energizes the electrons, which causes an electric current. The electric current will be stronger in response to brighter light. The electrical current can then be measured and transformed into a digital or analog output.

• Photo-resistor UV sensor

  A photo-resistor UV sensor works by measuring a change in resistance that is caused by the light available. These types of sensors are less accurate than those that use a photodiode and are usually limited to applications where the only information needed is whether the light is on or off. They can also be used to compare relative light levels in a space.

Davis instruments UV light sensor uses photodiode technology that allows a more accurate picture of the UV light present. Photodiode technology is similar to that used in solar panels. It is also the most useful for scientific use where accuracy and sensitivity are important.

What is a UV sensor made of?

The UV index sensor uses a hermetically sealed silicon photodiode. Silicon is the material of choice for applications where sensitivity and stability are important. Silicon also has a fast response and is efficient at collecting the charge created on the surface of the diode when light strikes it.

Photodiode technology continues to develop in response to challenges in the solar panel field, and sensor technology will benefit from these innovations, too. Davis instruments keeps pace with these changes and strives to offer the most advanced systems and state-of-the-art technology possible in its UV detectors. Whether you need a UV sensor for your weather station or part of a manufacturing process, Davis Instruments’ sensors will provide many years of accurate data collection.

• Multi-purpose temperature probe measures temperature of air, soil or water. Use with a Sensor Transmitter or EnviroMonitor Node (with RJ Connector Node, #6860). Can also be used with Weather Envoy or Vantage Connect to replace the “inside” temperature sensor.
• Measures temperatures as low as -40°F (-40°C) and as high as 150°F (65°C).
• Features an electronic sensor sheathed in black UV-stabilized plastic. Includes 25′ (7.6 m) cable.

• Multi-purpose temperature probe measures temperature of air, soil or water. Use with a Sensor Transmitter or EnviroMonitor Node. Can also be used with Weather Envoy or Vantage Connect to replace the “inside” temperature sensor.
• Features an electronic sensor sheathed in stainless steel. Comes with a 25-foot (7.6 m) cable.

• Measure temperature of air, soil, or water with this multi-purpose temperature probe.
• Use with a Leaf & Soil Moisture/Temperature Station (up to four per station), or with an EnviroMonitor Node.
• Probe has a 2-1/2″ (64 mm)-long stainless steel housing and includes 15′ (4.6 m) direct-burial cable.

• Great for mounting your Vantage Vue or Vantage Pro2 weather station. Convenient for mounting other Davis products including Sensor Transmitters, EnviroMonitor Cellular Gateways, and EnviroMonitor Nodes.
• Kit includes two poles and mounting hardware. Poles can be used separately or together to make a single, larger pole.
• One pole is 19.5″ (0.50 m) long. Second pole is 21″ (0.53 m) long. Outside diameter of both is 1.3125″ (3 cm). Total length with both poles is 37.5″ (0.95 m) long.
• Includes connector and mounting hardware.

What is a mounting pole?

A mounting pole assures that your weather station and transmitters are located at the proper height to be free of obstruction. It provides a secure, weather-resistant support for proper readings and to make sure the sensors are unobstructed.

Davis Instruments’ weather station mounting kit is durable and made from solid materials. When it comes to choosing a mounting for your weather station, it’s recommended to purchase one that gives you confidence that it can withstand the weather and won’t collapse and damage your equipment. This mounting kit is a good choice for durability in many different weather conditions.

Where can I install a weather station and mounting pole? How high should a weather station be mounted?

NOAA standards for siting a weather station are that the temperature, humidity, and rain sensors be at 4-6 ft. (1.2-2.0 m) above the ground. For optimum NOAA siting, the anemometer should be 33 ft. (10 m) above the ground. It is not always possible to site your station perfectly; Vantage Vue sensors are all in the same unit, and Vantage Pro2 anemometer and other sensors can be mounted on the same pole. Your data will be accurate for that siting. (For weather stations for agricultural applications, they should be 6 ft. (2 m) above the surface of the ground. If you are mounting equipment on the roof, it should be 10 ft. above the highest point.)

How do you secure a mounting pole?

To secure a mounting pole to a building or fence post, you first fit the extension pole over the swaged end of the shorter pole. Use the U-bolt provided to secure the pole to the saddle. The hex nuts and washers are tightened to secure the two sections of the pole together. Use the additional sets of lag screws, flat washers, and saddles to secure the pole securely to the surface.

How do you mount a weather station on a pole?

Your weather station will come with its own hardware and instructions for mounting.Vantage Vue sensor suites are mounted to the top of a pole, while Vantage Pro2 sensor suites are mounted using a u-bolt.

• Anemometer for Weather Monitor II and Weather Wizard III.