UV INDEX METER

ERYTHEMALLY EFFECTIVE (Eeff) UV

 
Specifications


Sensor (for reptile or tanning UV lamps)

Silicon Carbide (SiC) Photodiode packaged on gold plated header via gold wire bonding under UV glass window cap, hermetically sealed.

Filter: Metal Oxide Eeff (erythemally effective) and PTFE diffuser cap. 

Sensor (for outdoor sun only) Note: All meters are now shipped with above SiC sensor unless confirmed by email for outdoor use only. 

Aluminum Galium Nitride (AlGaN) Photodiode with UG-11 filter and PTFE diffuser cap.

Radiometer

Peak sunlight response bandwidth: 290-298 nm

Total solar response: 290-400nm, Diffey

Display: 3 ½ digit LCD

Resolution: 0.1 UVI

Power Source: 9V DC battery

Accuracy: ±10% ref NIST

Proper usage of Solarmeter Ultraviolet Radiometer for Outdoor UV Index Measurement
 

The instrumentation used to measure UV index for the U.S. E.P.A./NWS program is directed toward the sky in a global normal (perpendicular to level ground) inclination. Therefore the Solarmeter® Model 6.5 is designed to operate in the same fashion. Solar irradiance measured this way includes direct (reduced by cosine law depending on solar zenith angle) plus diffuse (diffused by the atmosphere).



This vertical (global) reading represents an average intensity value your body will experience while being active on a tennis or volleyball court, or lying flat on a blanket on the grass. If however, you are reclined in a lounge chair facing the sun perpendicular to the sun angle, you will experience a higher UV intensity, as represented by pointing the Solarmeter ® directly at the sun. This value will typically exceed the actual UV index number.