Coatings & Industry > Corrosion + Ageing > Accelerated Weathering Test
UV TESTER FOR UV-CONDENSATION ACCELERATION AGING TESTS
UV BOX simulates the effects of sunlight with ultraviolet rays using UV fluorescent lamps and also reproduces dew and rain using moisture condensation and water spray.
The accelerated UV aging test reproduces the damage caused by sunlight, rain and dew. In a few days or weeks of exposure of the samples inside the UV BOX, damages occurring in months or years of outdoor exposure can be reproduced.
To simulate aging due to external atmospheric agents, UV BOX subjects the materials to alternating cycles of UV radiation and humidity at controlled high temperatures. The instrument simulates the effects of sunlight through the use of special UV fluorescent lamps and the simulation of the effect of dew and rain occurs through condensation or a spray of water (Spray option).
UV radiation is responsible for almost all the processes of photo degradation of durable materials
exposed to the external environment. The fluorescent lamps used in the UV BOX simulate critical UV short waves and realistically reproduce the damage caused by sunlight. The types of damage that can be simulated with the UV BOX are the following: color change, loss of gloss, chalking, cracking, cracks, blistering, veiling, brittleness, loss of strength and oxidation.
Dew is mainly responsible for most of the moisture that occurs during out door exposure, much more than rain.
The condensation system of the UV BOX realistically simulates dew and amplifies its effect through the use of high temperatures.
The condensation process automatically purifies the network water used in the system. This is because the process of evaporation and condensation of water on samples is actually a distillation process, which allows to remove all impurities.
UV BOX can accommodate up to 48 standard samples (75mm x 150mm) and it is possible to create special sample holders according to customer specifications.
UV fluorescent lamps are more stable than other types of lamps, including xenon arc lamps. The spectral distribution (SPD) is not changed with the aging of the lamp, even after thousands of hours of operation, and this feature involves in more reproducible results, less frequent lamp replacements and a reduction in operating costs
Lamp s UVA-340:
UVA -340 lamps offer the best simulation of sunlight in the critical wavelength region from 365 nm up to the solar cut-off value of 295 nm.
UVB-313 lamps maximize acceleration through the use of the most aggressive UV short waves compared to those normally arriving on the earth's surface.
As a result, for some materials these lamps can produce too severe and unrealistic results
UV POWER PUCK ® II
The radiometers that first set the standard for the UV industry are now setting a new standard with advanced features and an easy to read display, multiple user selectable modes, and PC communications for data logging and trending capabilities.
UVICURE Plus II and UV Power Puck II are widely used throughout the global UV industry. With user selectable sample rates, these reliable instruments can be used for fast conveyor lines or slower lines.
Easy to Use. Single Button for On/Off and Run
Colorful, Easy to Read Display
Select low, medium, or high intensity for the graphical display brightness.
The UV Power Puck II instruments are now available in three operating or dynamic ranges.
The standard (10 Watt) unit works well for high power curing applications.
The new Mid Range unit (1 Watt) works well with lower power arc lamps and applications with lamps that are non-focused or a little further away from the cure surface.
The Low Power unit (100 mW) works well in exposure systems and applications with low power lamps.
Standard Features and Benefits Include:
UV Data Displayed on One Screen for Up to 4 Bands.
Data is simultaneously collected for up to 4 bands on the UV Power Puck II, then displayed on a single screen in mW/cm 2 and mJ/cm 2 for quick and easy viewing by the operator. No need to toggle through all eight readings, one screen at a time.
Soft buttons are used for function selections, and are indicated on the bottom of the display for easy operator selection and use.
Standard EIT Bandwidths (UVA, UVB, UVC, UVV) and the introduction of EIT UVA2
EIT’s standard bandwidths - (UVA (320-390nm), UVB (280-320nm), UVC (250-260nm), UVV (395- 445nm) as well as our new VA2 (380-410nm) bandwidth are available in the UV Power Puck II.
UVA2 can be used to measure LEDs in the +/- 390nm range as well as additive (mercury-iron, mercury gallium) bulbs.
UVA2 is available in a single channel Uvicure Plus II or UV
Power Puck II with UVA, UVA2, UVB, & UVV.
Unit of Measure
The unit of measure is user selectable to provide ease of reading for operators. Display the data as you want to see it. Selections are: mJ/cm 2 , mW/cm 2 , J/cm 2 , W/cm 2 , µJ/cm 2 , µW/cm 2
Provides user selectable instrument default modes for data analysis and comparison, screen, and operational settings.
A graph illustrating the collected UV irradiance and energy is displayed for each of the UV bands. Data is expressed in mW/cm 2 vs.
User Selectable Sample Rate
Smooth On Data: Compatible with previous sampling rate on Power Puck versions
Smooth Off Data: Compatible with UV PowerMAP sampling rate at over 2000 samples per second.
Used for comparison between readings. Can be useful for system setup and troubleshooting. The user can store the selected UV reading in the radiometer as a base line or reference reading, then compare that reading to another. The radiometer will display both readings and indicate the percentage of change between readings. Data is displayed in mJ/cm 2 and mW/cm 2 , and percentage.
Download collected data to a computer for statistical analysis and data logging. Software provided by EIT.
SpecificationsDisplay Easy to Read, Yellow Text on Black Background
Dynamic Range : 10 Watt: UVA, UVB, UVV - 100mW/cm² to 10W/cm²;
UVC - 50mW/cm² to 1W/cm²
Low Power Versions: UVA, UVB, UVC, UVV: 1mW/cm² to 100mW/cm²
Accuracy : +/- 10%; +/- 5% typical
Spectral Response : Approximately cosine
Spectral Ranges : 4-channel continuous monitoring.320-390nm (UVA), 375-415nm (UVA2), 280-320nm (UVB),), 395-445nm (UVV)
Spatial Response : Approximately cosine
Operating Temperature : 0-75°C Internal temperature; tolerates high external temperatures for short periods (audible alarm indicates when temperature has exceeded tolerance)
Time-Out Period : 2 minutes DISPLAY mode (no key activity). A no time-out mode can be activated by EIT-IM.
Battery :Two user-replaceable AAA Alkaline Cells
Battery Life : Approx. 20 hours with display on
Dimensions : 117 mm x 12.7 mm (D x H)
Weight : 289 grams
Package Material : Aluminum, stainless steel
Easy to Read, Yellow Text on Black Background
Suggested Operating Ranges
Standard High Range: UVA, UVB, UVV - 100mW/cm² to 10W/cm² / UVC - 10mW/cm² to 1W/cm²
Mid-Range: UVA, UVB, UVV -10mW/cm 2 to 1W/cm 2 / UVC: 1mW/cm 2 to 100mW /cm 2
Low Power: UVA, UVB, UVV - 1mW/cm² to 100mW/cm² / UVC - 1mW/cm 2 to 100mW/cm 2
Units will “turn on” and display data at irradiance values much lower than the suggested Operating
Ranges. The suggested Operating Ranges are where the instrument performs best.
+/- 10%; +/- 5% typical
(UV Power Puck® II)
4-channel continuous monitoring .Standard version: 320-390nm (UVA), 280-320nm (UVB), 250-
260nm (UVC), 395-445nm (UVV) / UVA2 Version: 380-410nm (UVA2 replaces the UVC band).
0-75°C Internal temperature; tolerates high external temperatures for short periods (audible alarm indicates when temperature has exceeded tolerance)
2 minutes DISPLAY mode (no key activity). A no time-out mode can be activated by EIT-IM.
Two user-replaceable AAA Alkaline Cells
Approx. 20 hours with display on
4.60 x 0.50 inches; 117 mm x 12.7 mm (D x H)
Aluminum, stainless steel
Carrying Case Material
Cut polyurethane interior, scuff resistant nylon exterior cover
Carrying Case Weight
Carrying Case Dimensions
274 x 89 x 197 mm (W x H x D).