Compact Air-Cooled Xenon Exposure Without a Lamp-Cooling Water Circuit
The DERUI DR-H301 xenon arc test chamber uses three air-cooled xenon lamps to expose materials under programmed light and temperature conditions. Its compact workspace and air-cooled lamp arrangement suit laboratories that need a smaller xenon system and whose required lightfastness or weathering method matches the chamber’s verified optical configuration.
Confirm Irradiance and Filters Before Claiming Standards Compliance
ASTM G155 covers operation of filtered xenon-arc apparatus for material exposure. ISO 4892-2 covers xenon-arc exposure of plastics in the presence of moisture, while ISO 105-B02 and related methods address textile colour fastness to artificial light.
The current DR-H301 parameter table publishes illuminance in lux. Lux is weighted to human visual response and is not a substitute for method-defined spectral irradiance in W/m² or narrow-band irradiance such as W/(m²·nm). Before ordering, confirm the exact standard edition, filter system, irradiance control point, temperature sensor and wetting requirement.
How the Air-Cooled System Is Positioned
Air-Cooled Lamp Arrangement
Three published 2.5 kW xenon lamps reject lamp heat through an air-cooling arrangement, avoiding the dedicated lamp-cooling water loop used by the DR-H301-2.
Compact Test Workspace
The 500 × 760 × 500 mm workspace is intended for specimens that fit the verified exposure area and holder geometry—not simply any sample that fits through the door.
Programmable Light and Temperature
The controller supports exposure programming. Required light level, temperature, wetting and timing must be checked against the governing method.
Moisture-Exposure Hardware
The published configuration includes a stainless-steel water tank. Confirm whether the quoted arrangement provides specimen spray, humidity or another moisture function required by the selected test.
Published DR-H301 Technical Configuration
The following values come from the current product parameter table. The signed technical agreement and approved quotation remain controlling.
| Модель | DR-H301 |
|---|---|
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|---|---|---|
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| 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 | 500 × 760 × 500 mm | 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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| 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 |
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- Rubber, inks and packaging: screened for light-related fading, embrittlement or surface change.
- Automotive and building materials: only when the required automotive or construction-material procedure is verified against the chamber configuration.
The chamber produces the exposure environment. Colour difference, gloss, tensile retention and other post-exposure properties require separate measurement instruments and documented acceptance criteria.
Air-Cooled Xenon vs Fluorescent UV
Choose Xenon Arc When
The method requires filtered xenon radiation or when UV and visible-light colour response must be represented by the approved optical system.
Choose Fluorescent UV When
The governing method specifies UVA or UVB fluorescent lamps together with condensation and/or spray cycles.
Do not select equipment from a general claim that one method is “faster.” Different materials and failure mechanisms respond differently to spectrum, temperature and moisture.
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Record the standard, edition, cycle, filter, light-control unit, temperature, moisture and evaluation criteria.
2. Define Specimens
Provide dimensions, quantity, backing, masking, mounting orientation and any reference material.
3. Verify Equipment
Check lamp hours, filters, sensor calibration, exposure area, temperature and moisture functions.
4. Program Exposure
Enter the approved sequence and document setpoints, interruptions and specimen positions.
5. Evaluate Change
Condition and measure specimens at the intervals required by the material procedure.
6. Report Completely
Record apparatus, filter, light setting, temperature, moisture, duration, deviations and evaluation results.
Calibration and Factory Acceptance
A useful factory acceptance test should go beyond confirming that the lamps switch on. Depending on the selected method, acceptance can include:
- Light sensor type, unit, control point, calibration status and adjustment range
- Spectral filter identification and installed configuration
- Exposure uniformity across the declared usable specimen area
- Temperature fluctuation, uniformity and sensor verification
- Water-tank, spray or moisture-cycle operation where supplied
- Program timing, alarms, data records, electrical safety and door interlock
Installation, Safety and Maintenance
Air-cooled lamps remove the need for a dedicated lamp-cooling water circuit, but the equipment still requires adequate ventilation, stable ambient conditions and the site utilities stated in the technical agreement. Intense light, heat and high-voltage ignition require a functioning door interlock and trained operators.
- Keep air inlets, outlets, lamp housings and fans clean and unobstructed.
- Record lamp hours and replace lamps based on verified output and manufacturer instructions.
- Inspect filters for contamination, damage and spectral ageing.
- Maintain the water tank and any spray circuit using the specified water quality.
- Verify light and temperature sensors according to the laboratory quality system.
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