Product code: WSMETPAKBASE
MetPak is available as a Base Station which enables the system to be specified with a remote wind sensor if required. This sensor can be positioned away from the Base Station and a 10 m connection cable is provided. The Base Station has been tested in accordance with BSEN 60945 and is suitable for use in marine environments. This system can also be specified without a wind sensor if wind measurement data is not required.
The MetPak base station is a compact and lightweight multi-sensor meteorological instrument that measures a wide range of weather parameters.
• Relative Humidity
• Dew point
• Barometric Pressure
Temperature and humidity are measured using industry standard probes housed in a naturally aspirated radiation shield. Barometric pressure is measured within a vented enclosure.
The MetPak base station can be specified with a remote sensor from any of the options below:
For wind speed and direction measurements to 60 m/s. Corrosion free,
Wind speed and direction measurements to 60 m/s with heating and
impact resistant to UL2218 Class 1 & BSEN 60945
An optional heater interface box is available for ease of connection for remote heated wind sensors.
The MetPak weather station is supplied with digital SDI-12, RS232 & 422 outputs.
Low power consumption enables this weather station instrument to be used in remote locations where power is at a premium.
An electrical junction box is fitted to the mounting bracket allowing convenient termination of all electrical cables.
For the complete MetPak weather station with integrated WindSonic sensor, see MetPak Weather Station.
MetPak Base Station benefits
• Compact unit
• Option for an ultrasonic wind sensor mounted remotely
• Includes 10m cable to connect a remote wind sensor
• Serial data output options
• Easily pole mounted
• Low power consumption for remote monitoring
MetPak Base Station measures
• Air temperature
• Relative humidity
• Dew point
• Barometric pressure
Units of measure
• °C or °F
• % RH
• hPa, mbar, mmHg, InHg
• Air temperature ±0.1°C
• Relative humidity ±0.8% @23°C
• Barometric pressure ±0.5hPa
• Temperature -35°C to +70°C
• Relative humidity 0-100% RH
• Barometric pressure 600-1100hPa
• Environmental monitoring
• Industrial controls
• Road Weather Stations
• Coastal Weather Stations
What does it output?
MetPak can be configured using the free MetView software provided to select the output rate and units of measurement that suit the application.
The MetPak automatically transmits a status code with each output to indicate the operating status of each of the sensors. This ensures accuracy and reliability.
For details of the MetPak default serial output, click here
Configuring the MetPak
To change the setting of a MetPak weather station from the default factory settings, it is possible to communicate with the instrument direct from a PC.
MetPak can be configured using:
• A terminal program such as MS Windows HyperTerminal.
• MetSet Configuration Software: MetSet is a free software package that allows the user to configure the output and display data provided by the MetPak II. The simple interface features a range of drop-down selection boxes, providing the ability to enable or disable existing sensors and adjust output rates.
MetView software is also provided free with each weather station, offering a clear, intuitive display of the current weather conditions.
MetView features five gauges: Temperature, Humidity, Pressure, Wind Speed and Wind direction. There is also a digital readout of Dew Point.
The MetPak default serial output is as follows:
|Data Connection||Data Bits 8, Parity None, Stop Bits 1, Flow Control None|
|Message Format||Wind Direction (degrees), Wind Speed (metres/Sec), Barometric Pressure (hecto pascals), Humidity (percent), Temperature (degrees C), Dew Point (degrees C), Power Supply (volts), Status Code (00) Checksum (hex number)|
|Output Sentence||Comma Separated Variable|
|Message terminator||Carriage return and line feed|
|Power up message||On|
Example Data String: <STX>,Q,DDD,SSS.SS,PPPP.P,HH.H,T.T,WW.W,VV.V,AA,<ETX>,CC<CR>,<LF>
Q is the anemometer identifier. Can be set to any character Q to Z
DDD wind direction in degrees relative to sensor axis
SSS.SS wind speed
PPPP.P barometric pressure
HH.H relative humidity
WW.W dew point
VV.V power supply voltage
AA status 00 ok, 01 anemometer axis 1 failed, 02 anemometer axis 2 failed, 04 anemometer axis 1 & 2 failed, 08 NVM error, 09 ROM error, 67 Temp/Humidity/Pressure or anemometer reading failed.
CC checksum Exclusive OR of all characters between <STX> and <ETX> as a two character hexadecimal value.
<STX> is the ASCII character with a value of 2
<ETX> is the ASCII character with a value of 3
<CR> is the ASCII carriage return character with a value of 13
<LF> is the ASCII line feed character with a value of 10
Details of other output options and configuration instructions are given in the user manual supplied with MetPak.
|Physical||Dimensions||370mm height (overall)
290mm standoff (max) from face of mounting pole
|Weight||1.1 kg (including bracket)|
|Mounting||Vertical pipe mounting 25mm to 50mm diameter|
|Material||UV Stabilised white thermoplastic with gloss white painted aluminium mounting bracket (with moulded plastic V-block and stainless steel U-bolt)|
|Performance||Air temperature||Range||-35°C to +70°C|
|Units of measure||°C, °F or K|
|Relative humidity||Range||0-100% RH|
|Accuracy||± 0.8% @ 23°C|
|Units of measure||% RH|
|Barometric pressure||Range||600-1100 hPa|
|Units of measure||hPa. mbar, mmHg, InHg|
|Dew point||Accuracy||± 0.15°C @ 23°C ambient temp and 20°C dew point|
|Units of measure||°C or °F|
|Sensors||Temperature, relative humidity & dew point||Rotronic HygroClip model HC2-S3 compensated for temperature dependency.
Radiation shield 6-plate naturally aspirated
|Barometric pressure||Solid state device compensated for temperature dependency -20°C to +70°C|
|Outputs||Digital outputs||RS232, RS422 or SDI-12|
|Baud rates||1200 (SDI-12) - 9600-57600 (ASCII RS232, RS422)|
|Protocols||ASCII or SDI-12 V1.3|
|Output rate||0.25, 0.5, 1 Hz or polled mode|
|Parameters output||Polar wind speed and direction or U & V vectors, barometric pressure, humidity, temperature, dew point, power supply voltage, MetPak status code, checksum|
|click on the Overview tab for details of the default serial output|
|Power||Power requirements||RS232, RS422||5 to 30 V dc
36 mA (output 1second) @ 12 V
|SDI-12||12 V nominal (9.6 to 16 V dc)
< 36 mA
|Environmental||Temperature||Operating range: -35°C to +70°C
Storage range: -40°C to +80°C
|Humidity||Operating range: 0% to 100% RH|
|Software||MetView - free software providing the means for configuring the MetPak II and reading output data|
The manufacturer reserves the right to amend the specification and therefore the information in this document may be subject to change