• Monitoring Instantaneous UV Index
• Measuring Solar Intensity In Terms Of UV Index
• UV Index Tracking Over Time
• Monitoring UV Lamp Intensity and Aging
| Model: | 6.5 |
| Irradiation Range: | 0-199.9 UV Index |
| Response: | 280-400 nm Diffey Erythemal Action Spectrum |
| Resolution: | 0.1 UV Index |
| Conversion rate: | 3.0 Readings/Sec |
| Display: | 3.5 digit LCD |
| Digit Size: | 0.4 (in) / 10.2 (mm) high |
| Operational Temperature: | 32°F to100°F / 0°C to 37.8°C |
| Operational Humidity: | 5% – 80% |
| Accuracy: | ±10% REF.NIST |
| Dimensions: | 4.2L x 2.4W x 0.9D (in) / 106.7L x 61W x 22.9(D) (mm) |
| Weight: | 4.5 oz / 128 g (including battery) |
| Power Source: | 9-Volt DC Battery |
| Lens: | UV Glas |
| Diffusor: | Teflon |
Sensor:
Silicon Carbide (SiC) Photodiode Sensor is under UV glass window, hermetically sealed with Eeff (erythemally effective) filter and diffuser cap.
Operation:
To operate the Solarmeter® , point the sensor window on the top of the meter, in front of your body, (perpendicular to the flat ground) towards the sky. Press and hold the push-button switch on the face of the meter. The displayed value represents the current UV index.
The highest UVI levels typically occur when the sky is deep blue, and sometimes when the sun is between scattered white “wispy” clouds. Take extra care in these conditions to avoid the risk of sunburn.
Note that different cloud and haze conditions reduce the UV index. Take frequent readings when partially cloudy and average clear and cloudy readings to determine the actual UV index. Be careful in hazy or slightly cloudy conditions, because although the direct UV radiation is lower than in clear skies, the diffuse UV radiation can be higher, as you can see if you hold the meter in different directions.
Battery operation voltage is viable from 9V down to 6.5V. Below 6.5V, the numbers on the LCD display will begin to dim, indicating the need for battery replacement. Under typical service load, a standard 9V battery will last approximately 2 years.
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Skin Type
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Typical Features
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Tanning ability
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I
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Pale white skin, blue/hazel eyes, blond/red hair | Always burns, does not tan |
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II
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Fair skin, blue eyes | Burns easily, tans poorly |
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III
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Darker white skin | Tans after initial burn |
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IV
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Light brown skin | Burns minimally, tans easily |
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V
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Brown skin | Rarely burns, tans darkly easily |
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VI
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Dark brown or black skin | Never burns, always tans darkly |
For Type II untanned skin the time to beginning of sunburn, one minimal erythemal dose (MED) at 210 J/m² per MED, can be calculated from the UV Index reading as follows:
Divide the UVI by 2.33 to get MED/hr. Then divide MED/hr into 60 minutes.
Example for an 8.5 UVI reading: 8.5 / 2.33 = 3.65 MED/hr. Then 60 / 3.65 = 16.4 minutes. Since minutes to burn for previously unexposed .
Maintenance and care:
• Do not expose the meter to extreme temperatures, humidity, shocks or dust. If the meter is accidentally exposed to extreme humidity or damp conditions, unusually high readings may occur. Allowing the meter to dry naturally or placing it in a bag of silicate will restore normal function.
• Use a very soft cloth to clean the meter. Keep the sensor free of oil, dirt, etc.
