KR‑308B Box‑Type UV Accelerated Weathering Chamber
RT-308B UV Accelerated Aging Test Chamber
UVA-340 Accelerated Aging Test Chamber
The UVA-340 fluorescent UV lamp is used as the light source to simulate sunlight, rain, and dew, reproducing outdoor weathering in a controlled and accelerated environment.
During the test, samples are exposed to alternating cycles of UV light and moisture at a set temperature. Within days or weeks, the chamber can simulate months or years of natural aging. Typical damages include fading, discoloration, cracking, chalking, turbidity, brittleness, and oxidation.
The chamber features a spraying device to simulate rainfall and can recreate multiple environmental conditions such as UV, high temperature, humidity, condensation, and darkness.
It automatically monitors black panel temperature and water bath temperature for stability. With an optional irradiance control system, the light intensity can be kept at 0.76 W/m² @ 340 nm or a preset value, extending the lamp lifespan and ensuring consistent test results.
Product Details：
Product Overview
The KR‑308B cabinet‑style UV accelerated weathering tester adopts UVA‑340 fluorescent ultraviolet lamps as radiation source to mimic real‑world outdoor conditions including solar ultraviolet irradiation, rainfall spray and dew condensation. By running cyclic sequences of UV exposure, moisture spray and damp condensation under precisely‑managed temperature settings, this unit compresses months‑to‑years of outdoor natural degradation into only several days or weeks of lab testing.
It reproduces typical material ageing phenomena: colour fading, discoloration, surface chalking, cracking, hazing, brittleness and oxidative deterioration. The touch‑screen controlled system supports full‑automatic cycling of light exposure, water spraying and condensation phases. An optional irradiance regulating module stabilises UV output intensity, delivering repeatable test outcomes and extending lamp working lifespan. This instrument is widely utilised for weather‑resistant performance validation of coatings, printing‑inks, polymer plastics, adhesives, automotive components and surface‑treated metal parts across R&D labs and QC departments. It meets a comprehensive set of global test specifications from ASTM, ISO, DIN, JIS, SAE and relevant GB standards.
Core Product Competitive Advantages
- Complete Multi‑Factor Outdoor‑Weather Simulation Capability
Integrated three core simulation modules: UV‑irradiation unit, circulating water‑spray assembly for rainfall simulation, and bottom water‑bath condensation system to recreate dew effect. Operators can freely configure alternating cycles for light, spray and condensation, closely reproducing complex outdoor stress rather than only single ultraviolet irradiation testing.
- 304 Full‑Stainless‑Steel Heavy‑Duty Cabinet Construction
Both inner test cavity and outer enclosure are built with premium SUS304 stainless‑steel sheet processed by CNC machining. It resists corrosion from high‑temperature‑humidity environment and water vapour. The internal single‑loop air duct together with imported axial fan optimises air circulation and improves temperature uniformity inside working space. Equipped with PU swivel casters for easy on‑site relocation.
- TIMI880 Full‑Touch‑Screen Programmable Controller
Intuitive bilingual touch‑screen HMI enables editing of multi‑segment test recipes. Parameters including irradiation duration, spray interval, condensation hold‑time and temperature set‑points can be pre‑saved. The system continuously monitors black‑panel temperature and water‑bath temperature via PT100 sensors for closed‑loop regulation. Real‑time running status and remaining test time are displayed on screen.
- Stable UV‑Light System with Convenient Lamp Maintenance
Comes with eight pieces of 40 W UVA‑340 fluorescent lamps with rated service life above 1600 hours. Lamp centre spacing and sample‑to‑lamp distance follow standard dimensional requirements. Lamp holders are designed for quick replacement without complex tooling. Optional irradiance controller maintains target radiant intensity at 0.76 W/m² @340 nm.
- Multi‑Layer Comprehensive Safety & Automatic Auxiliary Functions
Built‑in automatic water replenishing mechanism prevents dry‑burn of heating elements in water‑bath tank. Equipped with low‑water alert, over‑temperature cut‑off, overload‑short‑circuit breaker and grounding protection. U‑shaped sediment trap for drainage reduces pipeline blockage risk. Titanium alloy U‑shape heating tubes deliver rapid and even water‑bath heating.
Complete Technical Parameter Table
| Parameter Item | KR‑308B Standard Specification |
|---|---|
| Internal Chamber Dimension | 1050 × 600 × 450 mm |
| Overall Machine Dimension | 1400 × 770 × 1630 mm |
| Cabinet Material | SUS304 stainless‑steel (interior & exterior) |
| Controller Model | TIMI880 colour touch‑screen programmable controller |
| Effective Irradiation Area | 1100 × 710 × 400 mm |
| UV Lamp Configuration | 8 pcs × 40 W UVA‑340; wavelength range 315‑400 nm; lamp service life＞1600 h |
| Radiant Intensity | 0.68 W/m² @340 nm, adjustable (optional irradiance control upgrade) |
| Temperature Range | Ambient+10 ℃ ~70 ℃; illumination temp:20‑70 ℃; black‑panel temp:40‑65 ℃ |
| Temperature Tolerance | Illumination ±2 ℃; black‑panel ±1 ℃; fluctuation ±0.5 ℃ |
| Humidity Performance | Condensation phase ≥90 %RH; humidity fluctuation ±2 %RH |
| Lamp‑to‑Sample Distance | 50 mm; lamp centre‑to‑centre spacing:70 mm |
| Water‑Bath Tank | 25 mm water depth with auto water‑replenish, U‑shape titanium heating tube |
| Available Test Modes | UV irradiation / water spray / condensation / dark‑cycle, fully programmable cyclic sequence |
| Max Test Duration | 0‑999 hours adjustable |
| Required Water Source | Distilled / tap water; daily consumption approx. 8 L |
| Power‑Supply | AC 220V±10 %, 50 Hz; total power 3 kW |
| Ambient Installation Condition | 5‑32 ℃; ambient humidity ≤85 %RH |
Compliance Standards: ASTM D4329, D4587, G154, G53; ISO 4892‑3, ISO 11507; GB/T 2423.24; JIS D0205; SAE J2020 and other global UV weathering‑test norms
Standard Complete Test Operating Workflow
- Pre‑Test Preparation
Position the unit on well‑ventilated lab site. Connect power supply and water source. Inspect water‑tank water‑level, drainage pipeline, safety interlock functions and lamp status. Mount test specimens onto aluminium‑alloy sample rack; ensure sample surfaces keep parallel to UV lamp plane. Enter or recall pre‑programmed test recipe on touch‑screen: configure UV exposure time, spray cycles, condensation duration and target temperature values.
- Initial Chamber Stabilisation
Close test‑chamber door securely. Start test sequence. System runs water‑bath heating and air‑circulation to stabilise internal environmental parameters before launching formal cyclic ageing procedure.
- Automatic Cyclic Weathering Test
Equipment executes pre‑set loop phases automatically: UV‑irradiation ageing, water‑spray rainfall simulation, high‑humidity condensation dew‑forming and dark resting interval. PT100 sensors track black‑panel and bath‑water temperature continuously to maintain stable ageing conditions throughout long‑run testing.
- Test Completion & Specimen Retrieval
Upon reaching programmed total test hours, the machine auto‑stops all ageing functions. Open chamber door after internal temperature drops to safe level. Take out specimens for subsequent visual inspection, gloss measurement, colour‑difference testing or mechanical‑property characterisation.
- Post‑Test Tidying
Clear residual scale and contaminants inside water‑bath and spray nozzles. Drain sediment via U‑trap drainage system. Keep chamber door open for ventilation and dehumidification. Shut‑off water inlet and main power. Conduct periodic lamp‑aging check, filter‑element replacement and sensor calibration.
Wide Industrial Application Scenarios
Coatings, Inks & Resin Manufacturing Plants
Accelerated weather‑resistance evaluation for paint layers, surface‑coating films and resin products; screen formulation differences and forecast outdoor service‑life.
Plastic & Polymer Material Enterprises
Ageing performance testing for plastic parts, composite sheets and injection‑molded components; analyse anti‑UV degradation performance of modified polymer formulas.
Automotive & Motorcycle Component Factories
Weather‑simulation QC for interior‑exterior plastic trims, decorative surface coatings and rubber sealing pieces to meet automotive‑industry material‑validation requirements.
Adhesive, Packaging & Printing Material Producers
Durability assessment for adhesives, printing‑ink layers and packaging‑film under combined UV‑moisture outdoor‑exposure conditions.
University Material‑Science & Third‑Party Accredited‑Testing‑Organizations
Carry‑out standard‑compliant UV accelerated‑weathering experiments, generate formal test‑reports for new‑material R‑D and product‑certification audits.
Standard Factory‑Full‑Delivery Kit
- KR‑308B box‑type UV accelerated‑weathering ageing‑chamber main‑unit
- Complete set of UVA‑340 40 W UV lamps
- Aluminium‑alloy specimen holding‑rack assembly
- TIMI880 touch‑screen control system
- Built‑in water‑spray & condensation water‑bath assemblies
- Power‑supply connecting‑cable
- Multilingual printed‑operation‑manual complying with ASTM / ISO / GB relevant standards
- Factory‑issued performance‑inspection‑certificate
Optional Upgrade Accessories: UV irradiance closed‑loop control module, extra replacement lamp packs, external water‑filter assembly.
Global Distributor & After‑Sales‑Support
We provide remote‑one‑on‑one operational guidance covering recipe programming, lamp‑replacement, water‑system maintenance and sensor‑calibration procedures. Spare‑parts stock includes UVA‑340 lamps, titanium heating tubes, PT100 temperature sensors and filter consumables. Bulk‑order customers can request custom‑voltage variants for overseas‑market deployment. Regional‑exclusive‑agent privileges contain priority‑production‑scheduling, OEM private‑branding‑services and complete‑set high‑definition product‑marketing‑image‑resources.
Product‑Banner‑Marketing‑Slogan
KR‑308B Box‑Type UV Accelerated Weathering Chamber | Touch‑Screen Controlled UV‑Spray‑Condensation Tester For Material Outdoor‑Ageing‑Simulation Per ASTM‑ISO‑GB‑JIS‑SAE Standards
Core‑Feature‑Labels‑For‑Product‑Images
SUS304 Full‑Stainless‑Steel Cabinet | UVA‑340 Fluorescent‑UV‑Lamps | UV‑Irradiation‑Rain‑Spray‑Dew‑Condensation Multi‑Cycle | TIMI880 Touch‑Screen Programmable Controller | Black‑Panel & Water‑Bath Dual‑Temperature‑Monitoring | Auto‑Water‑Replenishing System | Multi‑Safety‑Protection Circuit | Optional Irradiance‑Stabilising Module | Global‑Multi‑Standard‑Compliant
Safety‑Operation‑Reminder
Do not open chamber door during running high‑temperature‑UV‑irradiation cycles to avoid UV‑light injury and high‑temperature scalding. Use distilled or filtered water to reduce limescale build‑up inside water‑bath and spray‑nozzles. Perform regular lamp‑condition inspection. Ensure reliable equipment grounding. Keep lab space well‑ventilated during long‑duration ageing tests.
Build Your Market with DGKAREY
KAREY products are trusted by customers across more than 100 countries, supporting long-term business growth in the testing equipment industry.
We are now seeking reliable partners to represent our brand in their local markets.
As an authorized distributor, you will receive dedicated regional support, ensuring a stable and protected business environment.
Your orders will be handled with priority, and our team will assist you with tailored equipment solutions based on your market needs.
From initial cooperation to ongoing development, we work closely with you to strengthen your presence and competitiveness.
DGKAREY – Your Reliable Partner in Global Supply
We go beyond supplying testing equipment. Our team manages the full journey — from export procedures to delivery at your door — ensuring efficiency, transparency, and peace of mind.
Related products
-
KR‑326 Air‑Exchange Ventilated Thermal Aging Test Chamber
-
KR‑308A Series Benchtop UV‑Fluorescent Accelerated Weathering Test Cabinet
-
KR‑307A Xenon‑Arc Accelerated Weathering & Light‑Ageing Test Chamber
-
KR‑318 Temperature‑Humidity‑Vibration Combined Test Chamber
-
KR‑314 Multi‑Grade IP Water‑Ingress Test Chamber
-
KR‑309 Benchtop Xenon‑Arc Weathering Chamber
-
KR‑306 High‑Temperature Electric Blast Drying Oven
-
KR‑302 Desktop Temperature‑Humidity Test Chamber