Q. What are mW/cm² units measured by Solarmeters and other UV radiometers?

A. Industry standard quantification of UV or Visible irradiance in output intensity per unit of area.

Q. When measuring UV lamps, what should the reading be?

A. 100W flourescent UV tanning lamps typically emit between 15-25 mW/cm² total UV, and 0.30 - 1.60 mW/cm² UVB. 160W+ lamps 25-50+, and high pressure UV lamps emit 80-150 or more total UV. Lamps need to be measured when new to determine what they "should" read in OEM equipment

Q. If my lamps are not new, how will I know what they should read?

A. Replace two adjacent lamps with new ones of same kind. Compare new to old lamps to determine relative difference.

Q. When should lamps be replaced?

A. When readings fall 30% (to 70% of new values). Eg: 15.0 new x 0.7 = 10.5 mW/cm².

Q. How can the Model 6.0 UVB meter help?

A. Two ways: Determine % UVB and check acrylic transmission. You will need both Model 5.0 (total UV) and Model 6.0 (UVB) to calculate % UVB. Eg: Model 5.0 reads 17.3 - Model 6.0 reads 1.30. Percent UVB = 1.30 / 17.3 = 0.075 = 7.5%. To check acrylic transmission, take UVB reading w/out acrylic and with acrylic. Most UVB should pass thru acrylic, or it needs replacement. As acrylic ages, it blocks/absorbs UVB quickly vs. UVA.

Q. How can the Vitamin D meter (Model 6.4) best be utilized?

A. The meter can measure outdoor solar or indoor UV lamp irradiance and readout the estimated quantity of Vitamin D3 IU proportional to the amount of MEDs (minimal erythemal dose) exposure. The display is in IU per minute for type 2 untanned skin at 10% body surface area (typically face and lower arms).
An Excel software utility is provided (by email) with the meter to allow entering meter reading, percent body exposure, skin type, percent tan, age, and SPF if any to determine approximate IU for particular individuals.

Q. What is the purpose of Model 6.5 outdoor UV index (UVI)?

A. The primary usage of UVI meter Model 6.5 is to monitor outdoor erythemal UVR, as defined by the EPA/NWS/NOAA/WMO. It is very useful for Sunwise School programs, and vacationers interested in UV intensity readings, to help prevent sunburn.It can also measure UVI from tanning lamps.

Q. What is (is not) the purpose of a MED meter?

A. The Model 7.0 MED meter utilizes the same detector spectral response as the UV Index meter above. The difference is that this meter is calibrated to read in MED/hour and can be used to estimate the time it will take to reach 0.9 MED (Te) which is the maximum exposure time that a sunbed is allowed to deliver, and the time it takes to reach 0.5 MED (Ti) which is the initial session time. These values can also be used to help monitor sunbed compliance in the tanning salon and to help develop skin type (subtype) based exposure schedules that neither overexpose, nor underexpose the clients of indoor tanning salons to UVR. The meter is not intended to extend time beyond AS/NZS 2635:2002 recommended maximum... rather the lamps should be renewed as MED/hr falls ~30% from new readings.

Q. What is the UVC meter designed for?

A. Model 8.0 UVC meter is for measuring germicidal lamps in the purification industry. Eye and skin protection is mandatory when using this meter.

Q. How can the Model 9.4 and 9.6 visible light meters be used?

A. These breakthrough radiometers offer direct irradiance measurements of both LED and lamp output in the Visible light bandwidths. For the first time, users can readout mW/cm² of Blue Light ( Model 9.4 ) or Red Light ( Model 9.6 ) from various phototherapy light sources.