A free service to present real-time and historical data of Symmetron data loggers on the World Wide Web, with plots and statistics for each measuring station.

For more information about Captum service, click here.

For a free demonstration, click the Enter button below and login as a visitor, with user name Symmetron. View the site named Office Temperature



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Full Symmetron products catalog

Click here to download our full line catalog in PDF form.

Wind energy assessment systems at 1, 3, 6 heights

Suni Measure wind speed and direction at 1, 3 or 6 heights, temperature, humidity, barometric pressure, etc

Optional telemetry, alarms and data emails via GSM/GPRS/LAN/internet

Depending on the system, capability of monitoring the wind turbine's electrical energy production, in real time or of wind turbine power curve analysis.

For more information, click here

Automatically test and calibrate wind vanes Automatically test and calibrate wind vanes

The Symmetron VeriVane system is designed for quick and easy testing and calibration of Wind Vanes.

VeriVane automatically rotates the wind vane in precise steps, measures vane output and records detailed results in an Excel workbook.
The user has only to mount the vane and start the test.

VeriVane includes all hardware, fixtures and software required to produce test reports.
For additional VeriVane information click here.

Monitor the inclination of your met masts Record Elevation and Azimuth for any angle

The Symmetron Tiltometer is a tilt sensor with polar coordinates outputs.

- Operates in any position (3D).
- Elevation and Azimuth voltage output.
- RS232 port.
- SMS message when angle is found off limit (optional).

- Monitor a met mast's inclination at one or more heights.
- Optionally, receive an SMS when the inclination becomes lower than a limit (eg 89 degrees).
- Compatible with most dataloggers, including Stylitis models.

For more information click here.

20 years of wind energy evaluation 20 years of wind energy evaluation

After 20 years and over 3000 Stylitis dataloggers for wind energy measurements Symmetron, a leader in the field, offers the expertise and technologies for successful exploitation of renewable energy resources in the 21st century.
Approved by international consultants and organizations, thousands of Stylitis-based campaigns have been successfully completed and applied.

The result is that members of the demanding MEASNET network depend on Symmetron dataloggers for their campaigns.

Wind Energy assessment: the basics Wind Energy assessment: the basics

Wind energy assessment may look simple in concept but requires a careful balance between required results and system complexity and cost.

This presentation may help you to decide.

Communication methods with measuring stations Telemetry with remote stations

Installation monitoring is key to successful measurement station operation and maintenance. To cover all needs, a variety of communication methods between a user and the measurement station are available:

- Broadband ADSL connections.
- Traditional GSM phone calls (modem to modem).
- Online GPRS connections.
- Data emailing.
- SMS data messaging.
- SMS alarms.
- Radio modem connections.

Click here for a Powerpoint presentation.

Instrument calibration certificates Instrument calibration certificates

Instrument calibration certificates according to ISO 17025 may be issued for most sensors.
Symmetron dataloggers come with a ISO 9001 factory calibration certificate.
Symmetron's VeriVane system allows wind vane testing and calibration in your office.

For additional information please see Services.

Full systems


Symmetron Dataloggers




Anemometers/ Wind Vanes


Anemometer/ Wind Vane Signal Converters


Wind vane verification and calibration


Temperature/ Humidity/ Bar. Pressure Sensors


PT100 Signal Converters


Rain Height sensors


Tilt sensors


Wind Towers