SN500SS Net Radiometer
Digital, Low-cost Net Radiometer
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This four-component net radiometer, manufactured by Apogee Instruments, provides individual measurement of net radiation components. This sensor features an SDI-12 output, eliminating the need for multiple analog channels to measure the individual components of net radiation. The SN500SS offers a complete package that includes a net radiometer, mounting rod, pigtail lead cable for data logger interface, and a carrying case.



Sensor Two thermopile pyranometers, two pyrgeometers
Measurement Description Measures incoming and outgoing short-wave and long-wave radiation
Heater 62 mA current drain and 740 mW power requirement at 12 Vdc
Operating Temperature Range -50° to +80°C and 0 to 100% humidity
Response Time 1 s (SDI-12 data transfer rate; detector response times are 0.5 s)
Heater Current Drain
  • 63 mA (heaters on; communication enabled)
  • 1.5 mA (heaters off; communication enabled)
  • 0.6 mA (heaters off; communication disabled)
Dimensions 11.6 x 4.5 x 6.6 cm (4.6 x 1.8 x 2.6 in.)
Weight 320 g (11.29 oz) with mounting rod and 5 m (16.4 ft) of lead wire


Spectral Range
  • 385 to 2105 nm (upward-looking)
  • 295 to 2685 nm (downward-looking)
  • 0.057 mV per W/m2 (upward-looking)
  • 0.15 mV per W/m2 (downward-looking)
Expected Output Range
  • 0 to 114 mV (upward-looking)
  • 0 to 300 mV (downward-looking)


Spectral Range 5,000 to 30,000 nm
Sensitivity 0.12 mV per W/m2
Expected Output Range -24 to +24 mV


Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.


Product Compatible Note
CR1000 (retired)
CR3000 (retired)
CR800 (retired)
CR850 (retired)


SN500SS Program Example (1 KB) 11-08-2021

An example program that uses the M! SDI-12 command to measure the incoming short-wave (SW) radiation, outgoing SW radiation, incoming long-wave (LW) radiation, and outgoing LW radiation of the SN500SS. The example program supports the CR6 and CR1000X data loggers.

Listed Under

Common Accessory for the following products: