METAR & SPECI FORMAT

Example of METAR report message

METAR LZJS 071600Z AUTO CALM //// //// 25/09 Q0977=
METAR LZJS 121140Z AUTO VRB05KT //// //// 06/04 Q0965=
METAR LZJS 121220Z AUTO 22007KT 160V290 //// //// 06/03 Q0964=
...
AUTO-METAR is a message generated every 30 minutes on the hour and half hour. 

Example of SPECI report message

SPECI LZJS 080925Z AUTO 22012G24KT 160V290 //// //// 07/03 Q0975=
SPECI LZJS 081039Z AUTO 22015G34KT 150V280 //// //// 08/04 Q0975=
...
SPECI report is only generated when there is a significant change or deterioration in weather conditions, and is generated when necessary, in real-time and without delay in between METAR messages.

METAR & SPECI message additional info

  • METAR & SPECI report detailed format is derived from available sensors. //// are used where sensor data is unavailable.
  • SPECI is an aviation special weather report issued when there is a significant deterioration or improvement in airport weather conditions such as significant changes of surface winds, visibility, cloud base height and occurrence of severe weather.

WIRELESS METAR SENDING

  • Send wireless METAR & SPECI directly to your server or server of your choice over GSM/GRPS 
  • Send data to the IP address and Port of your server

REAL-TIME DATA SENDING OPTIONS

The RS-232 logger interface port for computers, PLC or SCADA systems provides real-time meteorological sensor data.  Connect to your existing infrastructure or METAR report generation system. Real-time data is available in the following formats:

Serial ASCII data output

Date Time Data1 Data2 Data3… CRLF
Example: (space delimited format)
07.06.2017 04:43:00 3.117 13.839 99.043 -61.000
07.06.2017 04:44:00 3.214 13.910 99.093 -60.000
07.06.2017 04:45:00 3.201 13.880 99.193 -61.000
...

If required, CSV data format can be set.
Example: (comma delimited format)
07.06.2017,04:43:00,3.117,13.839,99.043,-61.000
07.06.2017,04:44:00,3.214,13.910,99.093,-60.000
...

MODBUS RTU data output

  • Data format: IEEE754 32 bit float numbers (standard). Each number is a float number (4 Bytes and made of two Modbus registers, Hi & Lo)
  • Response: The last measured value from OUT1…OUT32.
  • Read input registers uses 0x04 query. The number of read out registers has to be even. Logger RS-485 address range is from 00…99.
DATA TYPE OUTPUT MODBUS REGISTER #
DEC HEX
OUT1 MSW 100 0x64
101 0x65
OUT2 MSW 102 0x66
103 0x67
OUT3 MSW 104 0x68
105 0x69
...
OUT32 MSW 162 0xA2
163 0xA3

EASY SETUP & USE

EasyLog software does professional data logging setup and configuration the easy way

Request a free demo and see for your self how easy data logging with EasyLog software compatible data loggers can be. EasyLog is compatible with the following data logger hardware:

  • EasyLogGSM (8x analog, 4x digital, 3x PT100, 8x serial, 2x serial PLC/SCADA ports, 1x USB port, SD memory card)
  • METARlogGSM (8x analog, 4x digital, 3x PT100, 8x RS485/232 serial sensors, 1x serial PLC/SCADA ports, 1x USB port, SD memory card)
  • ProLogGSM (20x analog, 8x digital, 10x PT100, 8x RS485/232 serial sensors, 1x serial PLC/SCADA ports, 1x USB port, SD memory card)

INPUT PORT FLEXIBILITY

8x analog & 4x digital sensor inputs

  • Single ended inputs with transient-voltage-protection. 0...2.5V with max input voltage 6.5V.
  • Differential inputs with low-pass filter. Range ±2.5V with max input voltage 3V.
  • Digital inputs with transient-voltage-protection. Max input voltage 13V. Frequency range up to 3kHz.

Serial sensor port

  • RS485 and RS232 serial ports are protected with transient-voltage-protection.

Serial output port

  • RS485 and RS232 serial ports are protected with transient-voltage-protection.

4x power input options

  • 12V power-in input has reverse polarity protection. Voltage range 7 to13V.
  • 12V Battery connection with high-efficiency battery charger is protected by a 750mA PPTC resettable fuse/switch to guard against immediate battery discharge from short circuits.
  • Ultra-low power-in from 4 to 20V has reverse polarity protection and transient-voltage-protection. For portable in-the-field logger use.
  • 12V Solar system power-in with very wide input voltage of 0...22V to prevent over-voltage damage.

Power output for sensors

  • Protected by a 200mA max current PPTC resettable fuse/switch against discharge from short circuits.
  • Configurable sensor power-out to enable selectively switching on & off sensors to reduce weather station power consumption.

USB port

  • USB service port for quick SD card data access.
  • Also used to servicing and logger configuration.

RT operating system

  • Real-time operating system features watchdog timers to monitor all operations and protect against logger lockup.
  • Automatic wireless modem reconnect with smart delay to prevent unnecessary battery drain.  

Learn more about PowerProtect and PowerProtect Ultimate

FUTURE PROOF & EXPANDABLE

  • METARlogGSM generates AUTO-METAR reports and SPECI reports in real-time per ICAO guidelines.
  • Completeness of the METAR and SPECI message reports depends only on the sensors of your choice. 
  • As you grow your airport and heliport operations, additional sensors can be added at any time to include cloud ceiling and other important information.  
  • A METARlogGSM based airport weather monitoring system can be expanded to meet all IFR airport guidelines.
  • Connectivity to existing airport systems, whether PLC, SCADA, PC or other data systems is assured by the availability of the following data output types through the serial output port:
    • Real-time ASCII data (comma delimited or space delimited data in ASCII text file format)
    • Real-time MODBUS RTU data with up to 32 real-time data types. (request/response per Modbus standard) 

BENEFITS & FEATURES

Reliability based on proven hardware. Affordability from the use of new sensor technologies. Future-proof from flexible variety of inputs and easy configuration software.

Based on proven technology

  • Proven hardware & software - proven in over 10 years of field use in meteorological and hydrological applications.
  • Reliable low-power hardware - micro-power sleep and only 7 mA when awake and measuring.
  • Simple to configure and setup - EasyLog software makes configuring simple and time-efficient.

Variety of sensor input ports

  • 8 analog inputs
  • 4 digital inputs
  • 3 platinum PT100 Inputs + 1 reference
  • 8 max RS-485 or RS-232 sensors (MODBUS)
  • Serial-out for real-time data in multiple formats
  • USB service port for configuration and quick SD card data access

Real-time data output

  • Serial RS-232 port with real-time ASCII data in two formats and MODBUS RTU

Technical features

  • Separate RS-232 computer interface for easy setup
  • Universal SD card data storage (FAT32)
  • Daily automatic time synchronization with temperature compensated clock and backup battery
  • Power consumption between measurements in sleep mode is 40μA max
  • Power when actively measuring 7mA (typical)

METARLogGSM data logger is features the same proven hardware configuration of EASYlogGSM based on an ultra-low power microcontroller combined with high precision analog-digital converters and real time multitasking operating system.