Fluorescent UV Weathering Equipment

UV Accelerated Weathering Testing with Controlled Light and Moisture Cycles

The DERUI UV accelerated weathering tester exposes specimens to fluorescent UV radiation, elevated temperature, condensation and—where specified—water spray. It helps laboratories compare how plastics, coatings, rubber, textiles and other nonmetallic materials respond to controlled accelerated weathering conditions.

Programmable cycles and irradiance control support repeatable material screening, formulation comparison and quality-control work. The equipment can be configured around the specimen format and the exposure method required by your material or customer specification.

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مصدر الضوءUVA-340 fluorescent UV lamps in the published configuration

Exposure FunctionsUV, condensation and optional water-spray cycles

ControlProgrammable temperature, irradiance and cycle timing

Primary MethodsASTM G154 and ISO 4892-3 applications

What the Tester Reproduces—and What the Results Mean

Fluorescent UV weathering equipment concentrates on the short-wave UV, heat and moisture stresses that drive many outdoor degradation mechanisms. Depending on the material and evaluation method, laboratories can track color change, gloss loss, chalking, cracking, embrittlement, strength loss or other defined property changes.

Controlled exposure

Fluorescent UV radiation at a defined irradiance
Black-panel or chamber temperature control
Condensation to reproduce prolonged surface wetness
Water spray when required by the selected procedure
Repeatable programmed transitions between cycle steps

Useful decisions

Compare formulations, coatings or suppliers
Screen materials before longer outdoor exposure
Investigate known UV- and moisture-related failures
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DERUI UV accelerated weathering tester model specification overview — cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

المعلمة	cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits	cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits	cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits	cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits	UVA-340	UVA-340
cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits	من 25°C إلى 70°C	من 25°C إلى 80°C
cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits	0.35–0.70 W/m²/nm	0.35–0.70 W/m²/nm
cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits	cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits	cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
المتحكم	cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits	cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
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مصدر الطاقة	cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits	cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

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Method	Typical scope	cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
ASTM G154	cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits	cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
ISO 4892-3	cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits	cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
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ASTM D4329	cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits	cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits
ASTM D4587	Fluorescent UV-condensation exposure of paint and related coatings	Cycle, specimen preparation and coating failure criteria
cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits	Accelerated exposure of automotive exterior materials using fluorescent UV and condensation apparatus	Automotive program requirements and reporting conditions

For a detailed explanation of the basic practice, read DERUI’s ASTM UV resistance testing guide. If full-spectrum sunlight simulation is required, compare the application with a xenon arc weathering test chamber rather than assuming the two light sources are interchangeable.

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UV accelerated weathering test workflow with specimen exposure and cycle programming — A repeatable program begins with the material method—not with a generic cycle copied from another product.

Define the methodIdentify the material standard, end-use environment, control specimen and properties to be measured.
Select the lamp and cycleConfirm fluorescent UV lamp type, irradiance, exposure temperature, condensation or spray stage and total duration.
Prepare specimensCondition, label and mount samples consistently; record initial color, gloss, mass, strength or other baseline properties.
Program and verifyEnter the approved sequence and verify sensors, water supply, irradiance calibration and alarm settings before exposure.
Monitor the runDocument interruptions, lamp changes, water conditions and any deviation from the approved procedure.
cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limitsCondition exposed specimens as required, compare them with controls and report results using the specified measurement method.

Materials and Applications

Coatings and paints

Compare gloss retention, color change, chalking, cracking, blistering and adhesion after a defined fluorescent UV and moisture exposure.

Plastics and polymers

Screen resin formulations, stabilizers and pigments for discoloration, embrittlement, surface cracking and mechanical-property change.

Automotive materials

Evaluate exterior polymer parts, coatings, seals, trim and selected interior materials under the applicable OEM or industry procedure.

Rubber and sealants

Investigate surface cracking, hardness change and loss of elasticity caused by combined UV, heat and moisture stresses.

Textiles and outdoor products

Assess color retention and material degradation where the chosen textile or product specification permits fluorescent UV exposure.

Research and quality control

Compare new formulations with an approved control and monitor production consistency without claiming a universal outdoor-life conversion.

Information Needed to Configure the Tester

DERUI UV weathering tester configuration for fluorescent UV exposure — DERUI reviews the specimen, exposure method and laboratory utilities before confirming a configuration.

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UV accelerated weathering tester installation and routine maintenance inspection — cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits.

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DERUI provides a one-year whole-machine warranty, lifetime technical consultation, remote video guidance and operator training. Overseas installation can be arranged as a separately quoted service, and spare-parts support is available for up to ten years.