CaptT is a fix detector of global solar irradiation patented by Alitec Srl.

It is also capable of performing real-time measurements of direct and diffuse solar radiation and of providing information about the sun position with no need of sun tracking systems.


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  • Active optimization and fine-tuning of heating- and cooling-related energy consumption in buildings via BEMS systems
  • Optimization of PV plants production, both traditional and high-concentrated ones
  • Optimization of measurement and forecasting accuracy of  metereological and agro-metereological weather stations.


  • Capt2Go for BEMS and metereological applications. 
  • CaptPro (more accurate) for PV and CPV applications.

Capt2Go Technical features

  • Operating voltage : 6 to 24 V DC
  • Average consumption: 175 mW
  • Data rate : 1 Hz
  • Operating temperature range: - 30 to +80°C
Capt2Go Typical measurements errors

  • Global Irradiance: 40 W/m2 rms and maximum deviation ± 70 W/m2
  • Direct Normal Irradiance (DNI): 50 W/m2 rms
  • Diffuse Irradiance: 35 W/m2 rms
  • Zenith Angle: 2° rms and maximum deviation ± 4°.
  • Azimuth Angle: 4° rms and maximum deviation ± 10°.

  • RS485 - Modbus RTU (with Sun Spec Alliance specifications)
  • Digital output through serial port (TTL serial)



Alitec S.r.l. single shareholder company                                                                                                                     Company subject to direction and coordination by Ali Group S.r.l.

Registered office via Ponte Nazionale, 33 – 54023 Filattiera (MS) Italy
Laboratory R&S via Giuntini, 63- 56023 Navacchio (PI) Italy
VAT number 01140370451


Tel +39 050 7519500
Fax +39 050 3869683


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