Choice of UVA, Broad Band UVB, or Combination Units
Daavlin UV Research Units are manufactured to provide a concentrated ultraviolet light source. This type of unit can aid in all types of research and testing. They are built of heavy-duty steel and UL approved components and are warranted for 3 years. These UV Research Units can be manufactured with either 24″ (61 cm) or 48″ (122 cm) (approx.) lamps.
There are some important considerations when deciding which length lamps to use.
Advantages of 24″ lamps – If you need a small exposure area, these lamps will be advantageous since they are only 24″ long. The use of 24″ lamps can be efficient when you need both UVA and broad band UVB lamps in the same fixture.
Disadvantages of 24″ Lamps – The ends of the fluorescent lamps have a sharp falloff in energy output. Therefore, there is a higher percentage of area along the length of each lamp that is less useful than with 48″ lamps. Because there are many more cathodes in a typical unit equipped with 24″ lamps than one with 48″ lamps, these devices tend to run hotter. The hotter a lamp runs, the more pronounced the energy output falloff over a long exposure time.
Advantages of 48″ Lamps – They run cooler. The longer the lamp, the greater the efficiency in terms of power output. In general, a 48″ lamp will have higher output/shorter treatment times than a 24″ lamp.
Disadvantages of 48″ Lamps – They are not as efficient in combination units due to the smaller quantity of lamps compared to a dedicated unit.
Unit Features and Specifications:
This Daavlin Research Irradiation Unit consists of a fixture mounted on adjustable legs. Mounted within the exposure unit are 12 lamps measuring either 24" or 48" long. Avaliable lamp types are 12 UVA lamps, 12 broadband lamps, or a 12 lamp combo unit (with 6 UVA and 6 broadband UVB). The machine is available in 120V/60Hz or 220V/50Hz. It is available in the following configurations:
|LAMP SIZE||PART NO.||VOLTAGE||LAMPS TYPE|
|48″||818PH0012X648||110-120V, 60HZ||305-12 BB UVB only|
|48″||818PH0012X548||220-240V, 50HZ||305-12 BB UVB only|
|48″||818PH1200X648||110-120V, 60HZ||350-12 UVA only|
|48″||818PH1200X548||220-240V, 50HZ||350-12 UVA only|
|48″||818PH0606X648||110-120V, 60HZ||305/350-6/6 BB UVB and UVA|
|48″||818PH0606X548||220-240V, 50HZ||305/350-6/6 BB UVB and UVA|
|24″||818PH0012X6||110-120V, 60HZ||305-12 BB UVB only|
|24″||818PH0012X5||220-240V, 50HZ||305-12 BB UVB only|
|24″||818PH1200X6||110-120V, 60HZ||350-12 UVA only|
|24″||818PH1200X5||220-240V, 50HZ||350-12 UVA only|
|24″||818PH0606X6||110-120V, 60HZ||305/350-6/6 BB UVB and UVA|
|24″||818PH0606X5||220-240V, 50HZ||305/350-6/6 BB UVB and UVA|
The exposure system is controlled using the Daavlin Flex Integrating Dosimeter Controller. Dose units are entered in millijoules for broadband UVB and joules for UVA.
UVA lamps range from 320 to 400 nanometers
Broad band UVB lamps range from 290 to 320 nanometers
Approximate Lamp Output:
|UVA||Broad Band UVB|
|12 Lamps||18 mW||n/a|
|6 UVA/6 Broad Band UVB||6.5 mW||2.5 mW|
24″ unit – 36″ (91.5 cm) long x 27 ¼" (69 cm) wide x 25″ (63.5 cm) high
48″ unit – 52" (132 cm) long x 27 ¼” (69 cm) wide x 25″ (63.5 cm) high
Height Adjusting Legs – The height from the irradiating surface to the lamps can be adjusted using hydraulic legs and a manual crank. Minimum height is 6″ to a maximum height of 18″.
Blocking Curtain – Used to prevent UV from radiating beyond the exposure area. It is attached with Velcro and adjusts in height along with the unit.
Movable Cart – Heavy duty metal cart allows the irradiating surface to be at a comfortable working height. Castors provide unit mobility.
Integrating Dosimetry – Ensures the greatest accuracy in dosing by taking a virtually constant power output reading of the lamps and then integrating the data into the set treatment dose which is denominated in Joules/cm2 for UVA and milliJoules/cm2 for UVB. Any fluctuation in lamp output is automatically compensated for by the integrating dosimeter. The UV detectors that provide energy output information to the system can either be built into the machines or can be placed on a connector so that he detector can be placed anywhere within the exposure area. This may be desirable if a very accurate measurement of the unit’s output at the treatment area is required.
Irradiance Meter – For accurate monitoring of source irradiance, ensuring consistency of dose measurement, Daavlin offers an easy to use, hand-held meter. The meter is compact and designed for mobile use. Each unit is calibrated by Daavlin and includes a calibration certificate. It measures UVA and broad band UVB.
Ontogeny Corporation, Cambridge, MA
Mary Kay Cosmetics
Case Western Reserve University
University of Texas at Austin
University of Michigan
Mt. Sinai Hospital, New York
Columbia Presbyterian Hospital
University of California San Francisco
University of South Dakota
University of Wisconsin
University of Alabama-Birmingham
Please call or email today for a quote based on your individual requirements.