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ClimaVUE 50 Compact Digital Weather Sensor
Complete Weather Sensor with No Moving Parts
Low power, compact, and simple for easy installation in remote locations
weather applications water applications energy applications gas flux & turbulence applications infrastructure applications soil applications

Overview

The ClimaVUE™50 is an affordable all-in-one meteorological sensor that fulfills your weather monitoring needs with ultimate simplicity, when paired with one of the most flexible and scalable Campbell platforms. It uses SDI-12 to report air temperature, relative humidity, vapor pressure, baro­metric pressure, wind speed, gust and direction, solar radiation, precipitation, lightning strike counter, and distance. It does this with no moving parts, while consuming little power. A built-in tilt sensor assures long-term data integrity. This diverse product is great for quick deployment, for remote locations, for large networks, as part of a more complex system, or if you just need something simple.

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Benefits and Features

  • All the common meteorological measurements with one simple digital (SDI-12) output
  • Less than 1 mA average power consumption makes it ideal for solar-powered sites
  • Integrated tilt sensor helps assure that the sensor stays level over time
  • Low maintenance—no moving parts significantly reduces maintenance cost and time
  • No sensor configuration required
  • Compact design for quick, low-impact installation
  • Compatible with all modern Campbell Scientific dataloggers

Images

Glam view
Glam view
Glam view
Front view
Back view
Left view
Right view
Top view
Bottom view
ClimaVUE 50 mounted to a pole (sold separately)
ClimaVUE 50 mounted to a pole (sold separately)

Detailed Description

Sensors

All sensors are integrated into a single, small form-factor unit, requiring minimal installation effort. With a robust, no-moving-parts design that prevents errors because of wear or fouling, this weather station sensor is ideal for long-term, remote installations.

Pyranometer

Solar radiation is measured by a pyranometer that is integrated into the lip of the rain gage funnel at the top of the ClimaVUE™50. The miniature pyranometer uses a silicon-cell sensor to measure the total incoming (direct and diffuse) solar radiation. A carefully developed cosine-correcting head ensures accurate readings regardless of sun angle, while the painstakingly researched optical filter material balances cost and performance to ensure the silicon-cell provides the ClimaVUE™50 with good accuracy regardless of temperature or sensor age. Silicon-cell sensors have excellent response time to changing radiation conditions and acceptable sensitivity across the solar spectrum, which make them perfect for use on the ClimaVUE™50.

Anemometer

The space underneath the rain gage is where the ClimaVUE™50 measures wind speed. Ultrasonic signals emitted from transducers at right angles to each other bounce off the porous sintered glass plate and back up to the opposite sensor. The speed of sound is affected by the wind, and the wind speed is calculated by measuring differences in the time it takes for sound to travel from the transmitters to the receivers.

Temperature Sensor

The ClimaVUE™50 temperature measurement is made in the center of the anemometer area where a small stainless-steel needle containing a tiny temperature sensor (thermistor) extends from the middle of the four sonic transducers in the center of the anemometer. Unlike most air temperature measurements, the temperature sensor is not covered with louvered plates to protect it from solar heating. Instead, it sits in open air, susceptible to solar heating of the instrument body. However, the ClimaVUE™50 accurately corrects the measured air temperature because solar radiation and the wind speed are known. These two are the main variables that determine the error between measured air temperature and the actual air temperature. An energy balance equation is then used to calculate what the actual temperature should be to an accuracy of ±0.6°C. 

For more information, see the "ClimaVUE™50—Correction of air temperature measurements from a radiation-exposed sensor" technical paper.

Relative Humidity Sensor

The relative humidity sensor on the ClimaVUE™50 is located behind the circular Teflon™ screen close to the sonic transducers. The Teflon screen protects the sensor from liquid water and dust while allowing water vapor to freely pass to the sensor. The ClimaVUE™50 measures relative humidity and temperature and computes vapor pressure.

Drip Counter Rain Gage

The ClimaVUE™50 contains a 9.31 cm (3.67 in.) diameter rain-collection funnel. A spring in the funnel acts as a filter to keep out large particles while allowing enough flow so water does not back up. Rain collected by the funnel exits the funnel through a precision flared hole that forms the rain into drops of a known size. The falling drops hit and momentarily bridge the gap between two gold pins, creating an electrical pulse.  

The ClimaVUE™50 counts the pulses (drops) and calculates the water volume. As the rain intensity increases, the drops become smaller, but the ClimaVUE™50 firmware contains an algorithm to automatically compensate for drop size as the rain increases.

Note: This non-heated sensor is not suitable for solid precipitation or riming environments.

Tilt Sensor

The ClimaVUE™50 is also equipped with a tilt sensor. The primary use of the tilt sensor data is to ensure the ClimaVUE™50 remains level at all times. Regularly check X and Y tilt data to ensure the ClimaVUE™50 is level; if it has tilted, return to the site and level again. Three degrees off level can cause errors in the rain and solar radiation measurements. Although this sensor's readings may be used to level the instrument during installation, it is much easier to use the small bubble level on the bottom of the anemometer plate.

Mounting

The ClimaVUE™50 includes a V-bolt for mounting to a pipe with a nominal outer diameter of 31.8 to 50.8 mm (1.25 to 2.0 in.). This allows the sensor to mount directly to a tripod mast or CM300-series mounting pole, or to a crossarm using the 17387 WindSonic Mounting Pipe Kit.

Specifications

Output SDI-12
Operating Temperature Range -40° to +50°C
Minimum Supply Voltage 3.6 Vdc continuous
Maximum Supply Voltage 15.0 Vdc continuous
Minimum Digital Input Voltage
  • 2.8 V (logic high)
  • -0.3 V (logic low)
Typical Digital Input Voltage
  • 3.0 V (logic high)
  • 0.0 V (logic low)
Maximum Digital Input Voltage
  • 3.9 V (logic high)
  • 0.8 V (logic low)
Typical Measurement Duration 110 ms
Maximum Measurement Duration 3,000 ms
Application of Council Directive(s)
  • 2011/65/EU: Restrictions of Substances Directive (RoHS2)
  • 2014/30/EU: Electromagnetic Compatibility Directive (EMC)
Standards to Which Conformity Is Declared
  • EN 61326-1:2013: Electrical equipment for measurement, control and laboratory use—EMC requirements—for use in industrial locations
  • EN 50581:2012: Technical documentation for the assessment of electrical and electronic product with respect to the restriction of hazardous substances
Diameter 10 cm (4 in.) including rain gage funnel
Height 34 cm (13.4 in.) including rain gage funnel

Power Consumption

Quiescent 0.3 mA
Maximum Peak Current 33 mA
Average using R0! every 10 s 1.0 mA
Average using R0! every 60 s (or slower) 0.4 mA

Air Temperature Measurement

Measurement Range -40° to +50°C
Resolution 0.1°C
Accuracy ±0.6°C

Relative Humidity Measurement

Measurement Range 0 to 100%
Resolution 0.1
Accuracy ±3% RH typical (varies with temperature and humidity)

Barometric Pressure Measurement

Measurement Range 500 to 1100 hPa
Resolution 0.1 hPa
Accuracy ±1 hPa typical below 40 °C (varies with temperature and humidity)

Wind Speed Measurement

Measurement Range 0 to 30 m s-1
Resolution 0.01 m s-1
Accuracy 0.3 m s-1 or 3% (whichever is greater)

Wind Direction

Measurement Range 0° to 359°
Resolution
Accuracy ±5°

Solar Radiation Measurement

Measurement Range 0 to 1750 W m-2
Resolution 1 W m-2
Accuracy ±5% of measurement (typical)

Precipitation Measurement

Measurement Range 0 to 400 mm hr-1
Resolution 0.017 mm
Repeatability ±5% of measurement (from 0 to 50 mm hr-1)

Tilt Measurement

Measurement Range 0° to 180°
Resolution 0.1°
Accuracy ±1°

Lightning Strike Count

Measurement Range 0 to 65,535 strikes
Resolution 1 strike
Accuracy > 25% detection at < 10 km typical (variable with distance)

Lightning Average Distance

Measurement Range 0 to 40 km
Resolution 3 km
Accuracy Variable

Compatibility

Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.

Dataloggers

Product Compatible Note
CR1000
CR1000X
CR300
CR3000
CR310
CR6
CR800
CR850