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The World Meteorological Organization (WMO) guideline no.8 defines the measurement requirements for weather stations. The WMO also defines stringent measurement requirements for a standards compliance weather station, called a Tier 1 weather station. For example, the WMO specifies that all wind measurements must be made at a height of 10 meters, which makes the installation inconvenient.
General purpose weather stations which do not fully comply with the WMO guidelines are called Tier 2 weather stations as there are compromises made for convenience, for example wind may be measured at a height of 2 meters rather than 10 meters.
As a general rule, weather authorities may have a base set of tier 1 weather stations which are quite expensive, and they also have a second set of Tier 2 weather stations to supplement measurements, or may be used on a short term / project by project basis. For special purposes, for example a mine site / port facility would typically install a Tier 2 weather station, rather than a fully compliant Tier 1 weather station.
There are also some consumer grade / hobby store weather stations which may provide interesting and inaccurate weather data to home users however these are usually not calibrated and the data cannot be relied on.
Unidata’s Weather Monitoring Stations have a broad range of applications depending on your choice of instruments and configuration.
When considering a weather station purchase, most customers will decide to set up a Tier 2 weather station. Customers then have the choice of using standalone / separate instruments, which was the only choice some years ago, or a modern multi parameter instrument such as the Unidata 6501V-H (Vaisala) or other manufactures such as Luft.
Modern multi parameter weather stations use ultrasonic technology and are very convenient as they do not have moving parts.
Please see a typical parameter list from the 6501V-H Vaisala Weather Transmitter below:
One of our simplest Weather Stations consists of temperature and humidity sensors mounted in a double-louvered radiation screen. These are connected to a data logger or Neon Remote Terminal or Module mounted in a weatherproof enclosure.
A system more often required includes instruments that enable you to monitor and record temperature, relative humidity, global solar radiation, and wind speed and direction. The data logger or Neon Remote Terminal or Module will measure, store and display weather data for about one year using its internal battery (this period will vary according to configuration). The weatherproof enclosure also includes a field termination strip that makes it easy to connect external instruments and enables you to condition incoming signals.
Remember that the instruments you add increase the power burden, so you will need to add a solar panel, external batter, and regulator, or some other form of external power supply. Typically our customers choose to mount the instruments and data logger or Neon Remote Terminal or Module enclosure on a fixed pole. However Unidata can also supply a pole with a tripod base for installations that will not be permanent.
Because many of our customers install the Weather Station in remote or unattended locations most customers choose to use a Neon Remote Terminal, either cellular, satellite so the data collected can be sent to a central neon server and displayed on a standard web browser from anywhere in the world.There is an example screen display from the Neon Application showing typical displays for weather stations.
Installing telemetry reduces the need for time consuming site visits, and gives assurance that the weather station is continuing to operate correctly without the need for a site visit.
Note that when using telemetry you will need to provide external power such as a solar panel, external battery and regulator and use a larger waterproof enclosure.
|Options for Application Specific Instruments / Inputs||Unidata Part Number||Description|
|Vaisala Weather Transmitter WXT520||6501V-H||Vaisala Weather Transmitter measure barometric pressure, humidity, precipitation, |
temperature and wind speed and direction
|Temperature Thermistor Probes||6507E||Red Thermistor Probe 3K@25C with requested cable lengths|
|Precision Temperature Probes||6507D||Robust Thermistor Probe 0.1C with requested cable lengths|
|Linear Temperature Probe||6535A||Temperature Probe LM34 with requested cable lengths|
|Humidity and Temperature Probe||6539B||Humidity and Temperature Probe|
|Rain Gauge||6506C||Rain Gauge/Tipping Bucket|
|Mounting Arrangement for Temperature Probes||6704A||Radiation Gill Screen and Mounting - Full Size|
|Mounting Arrangement for Temperature Probes||6704B||Radiation Gill Screen and Mounting - Half Size|
|Radiation Sensor||7241C-A||Pyranometer Sensor – Solar Energy|
|Mounting Arrangement for Pyranometers||7241M||Pyranometer Sensor Instrument Mounting and Hardware|
|Options for Neon Telemetry - NRT / RTU / Field Units||Unidata Part Number||Description|
|Cellular RTU 3G||2013F-AB03||Neon Metering Module 3G with Antenna and Li Battery|
|Cellular RTU 4G||2013F-AB04||Neon Metering Module 4G with Antenna and Li Battery|
|Cellular RTU 3G - Industrial||2016F-AB03||Neon Remote Terminal 3G with Antenna and Li Battery|
|Cellular RTU 4G - Industrial||2016F-AB04||Neon Remote Terminal 4G with Antenna and Li Battery|
|Low Earth Orbit Satellite Globalstar||2015E-AB0||Neon Remote Terminal - Satellite Globalstar Modem with Antenna and three Li Batteries|
|Ethernet||2017E-0B0-1 or 3||NRT Ethernet with single or triple Ethernet Ports|
with three Li Batteries
|Equatorial Orbit Satellite - Inmarsat||2018E-AB0-1 or 3||NRT Ethernet with single or triple Ethernet Ports|
with three Li Batteries
|LCD Display||2500E||NRT LCD Display|
|NRT Field Termination Strip||2103F||2015E,2016F,2017E, and 2018E NRT FTS|
|NRT Firmware Option||2303A-8M||8M Extended Memory Option|
|NRT Firmware Option||2303A-8M-CAM||8M Extended Memory & Serial Camera Option|
|NRT Firmware Option||2303A-CAM||Serial Camera Option|
|Options for Neon Application Software - Customer Server||Unidata Part Number||Description|
|Neon Application Software||2302A||Neon Server Software Licence Incl 5 NAL |
|Neon Application Software||2302A-10||Additional 10 NRT Access Licences|
|Neon Application Software||2302A-20||Additional 20 NRT Access Licences|
|Neon Application Software||2302A-50||Additional 50 NRT Access Licences|
|Options for Neon Application Software - Unidata Server||Unidata Part Number||Description|
|Neon Application Software||2301A||Neon Data Initial Subscription Setup Fee|
|Neon Hosting Service||2301A-01||Neon Data Service Fee for 1-50 NRTs|
|Neon Hosting Service||2301A-02||Neon Data Service Fee for 51-100 NRTs|
|Neon Hosting Service||2301A-10||Neon Data Service Fee Metering|
|Options for Conventional Dataloggers / Field Units||Unidata Part Number||Description|
|Standards Starlogger||6004D-11||Red Logger 512K with Alkaline Battery|
|Display Starlogger||6004D-21||Blue Logger 512K with LCD and Alkaline Battery|
|Prologger||7001D-11||Green Logger 1M with LCD and Alkaline Battery|
|Starlogger Field Termination Strip||6103E||6004D FTS|
|Prologger Field Termination Strip||7100E||7001D FTS|
|Starlog V4 Management Software||6308A-AUE||Starlog V4 Full Licence Key|