Solarmeter Model 6.5R Reptile UV Index Meter

Solarmeter’s new Model 6.5R Reptile UV Index Meter updates our legendary original Model 6.5 UV Index Meter with attractive, informative graphics specifically designed for reptile husbandry. Many scientists and breeders worldwide rely on the original Model 6.5 UV Index Meter, so the new Model 6.5R is unchanged operationally or in terms of specifications from the original. We just made this meter easier for reptile owners to use by updating the graphics with the latest scientific research about proper UV dosages for reptiles. Specifically, the Ferguson Zone chart at the top of the meter provides the user with an instant, accurate reference for the meter’s UVI readout. To operate, press and hold push-button switch on face of unit. Aim sensor window in top panel of meter directly at UV source. Note reading on LCD and record if desired. Battery operation voltage is 9V down to 6.5V. Below 6.5V the LCD numbers will begin to dim, indicating the need for battery replacement. Under “typical” service load, the battery should last approximately 2 years.Sensor (for reptile UV lamp use)

Sensor

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

Radiometer

• Peak sunlight response bandwidth: 290-298 nm
• Total solar response: 290-400nm, Diffey
• Display: 3 ½ digit LCD
• Resolution: 0.1 UV
• 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.

To obtain the UV index instantaneous value, the following instructions will provide the most consistent, accurate results:

• Stand clear of buildings, trees, etc. to obtain a “full sky” field of view.
• Hold the meter vertical out in front of your body.
• Press and hold button on front of meter case. Note reading on LCD. This value represents the instantaneous UV index.
• The highest UVI values typically occur when the sky is a deep blue color, and sometimes when the sun is between scattered white “puffy” clouds. Take extra precaution under these conditions to reduce sunburn potential.

Note that various cloud and haze conditions reduce the UV index. When partly cloudy, take readings often and average clear with cloudy readings to correlate with actual UV index. Take care in hazy or slightly overcast conditions because although the direct UV reads less than when sky is clear, the diffuse UV can be higher… as seen by pointing the meter in various directions.

Among the outdoor variables affecting UV intensity are: