SP Lite2 Pyranometer
SP Lite2 can be used under all weather conditions. The sensor measures the solar energy received from the entire hemisphere, and is ideal for measuring available energy for use in solar energy applications, plant growth, thermal convection and evapotranspiration. Compact and lightweight, it is particularly suited to monitoring the efficiency of photovoltaic solar energy systems, where its spectral response is similar to that of PV cells.
- Spectral range (overall)
- 400 to 1100 nm
- Sensitivity
- 60 to 100 µV/W/m²
- Expected output range (0 to 1500 W/m²)
- 0 to 150 mV
Overview
In detail
How it works
SP Lite2 uses a photodiode detector, which creates a voltage output proportional to the incoming radiation. Due to the unique design of the diffuser, its sensitivity is proportional to the cosine of the angle of incidence of the incoming radiation, allowing for accurate and consistent measurements.
Performance
SP Lite2 is a simple pyranometer for routine measurements of solar radiation. It has a conical diffuser that provides excellent directional (cosine) response, causes rain to run off and is easy to clean. Although the spectral range is limited by the photodiode detector, the performance of the SP Lite2 compares favourably to ISO 9060 Second Class thermopile pyranometers under clear and unobstructed natural daylight conditions.
Mounting and configurations
The mounting flange incorporates a bubble level and adjustment screws, for easy levelling. A threaded hole takes the accessory screw-in mounting rod for fitting to masts and poles. Two SP Lite2 instruments can easily be bolted back-to-back, and fitted with the mounting rod, to make a simple albedometer. The standard cable length is 5 m, with an option of 15 m. SP Lite2 is ideal for use with the METEON handheld display and data logger for field testing.
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Specifications
Technical specifications
- Spectral range (overall)
- 400 to 1100 nm
- Sensitivity
- 60 to 100 µV/W/m²
- Expected output range (0 to 1500 W/m²)
- 0 to 150 mV
- Maximum operational irradiance
- 2000 W/m²
- Response time (95%)
- < 500 ns
- Non-stability (change/year)
- < 2%
- Non-linearity (0 to 1000 W/m²)
- < 2.5%
- Directional response (up to 80° with 1000 W/m² beam)
- < 10 W/m²
- Temperature response
- -0.15%/°C
- Detector type
- Photo-diode
Related
Often specified alongside
SMP6Weathertech
SMP6 Pyranometer
- Supply
- 5 to 30 VDC
- Temp
- -40 °C to +70 °C
- Classification to ISO 9060:2018
- Spectrally Flat Class B
SMP21Weathertech
SMP21 Secondary Standard Pyranometer
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