SEN UV Lamp Tube EUV250WH-1
| Brand | Aitesen |
|---|---|
| Origin | Japan |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | EUV250WH-1 |
| Price | USD 3,500 (FOB Japan) |
Overview
The SEN UV Lamp Tube EUV250WH-1 is a high-intensity, medium-pressure mercury vapor lamp engineered for stable ultraviolet irradiation in industrial curing, photochemical synthesis, and laboratory-scale UV exposure applications. Designed and manufactured under stringent Japanese quality control standards by SEN Corporation — a long-standing specialist in UV light sources for analytical and process instrumentation — the EUV250WH-1 delivers consistent spectral output across the UVA (315–400 nm) and UVB (280–315 nm) bands, with peak emission at 365 nm and secondary lines at 313 nm and 254 nm. Its quartz envelope is doped with titanium to enhance transmission stability under prolonged thermal cycling and resist solarization-induced transmittance decay. The lamp operates on a dedicated constant-power electronic ballast (not included), requiring DC or high-frequency AC supply with precise current regulation to maintain radiometric reproducibility within ±3% over 1,000 hours of rated life.
Key Features
- Quartz envelope with titanium-doped fused silica for enhanced UV transmission stability and reduced solarization
- Rated optical power output: 250 W nominal arc power; calibrated radiant flux ≥ 12.5 W at 365 nm (measured at 1 m, 1 cm² detector aperture)
- Operating voltage range: 220–240 V AC, 50/60 Hz input (compatible with standard SEN-series ballasts)
- Integrated ceramic base (G13 socket) with nickel-plated contacts for thermal resilience and low-resistance connection
- Compliant with IEC 62471:2006 (Photobiological Safety of Lamps) for Risk Group 3 (RG3) classification — requires interlocked enclosures and UV-blocking shielding during operation
- Designed for vertical or horizontal mounting; thermal management interface supports forced-air cooling up to 1.5 m/s airflow velocity
Sample Compatibility & Compliance
The EUV250WH-1 is compatible with UV-curable acrylates, epoxy novolacs, and photoinitiator systems (e.g., Irgacure® 184, Darocur® 1173). It meets material compatibility requirements for ISO 11664-3:2019 (CIE colorimetric observers) and ASTM D4329–22 (Standard Practice for Fluorescent UV Exposure of Plastics). As an imported component distributed by Aitesen Co., Ltd., it carries full traceable manufacturing documentation including batch-specific spectral irradiance curves (measured per CIE S 023/E:2013), CE marking for EMC Directive 2014/30/EU, and RoHS 2011/65/EU conformity. For GLP-regulated laboratories, lamp replacement logs and irradiance calibration certificates (NIST-traceable via JCSS-accredited lab in Osaka) are available upon request.
Software & Data Management
While the EUV250WH-1 is a standalone lamp module without embedded firmware, its operational parameters integrate seamlessly into third-party UV monitoring ecosystems. When paired with SEN’s optional UV-Integrator Control Unit (UCU-2000), real-time irradiance (mW/cm²), cumulative dose (J/cm²), and lamp-on time are logged via RS-485 Modbus RTU protocol. Data export supports CSV and XML formats compliant with 21 CFR Part 11 audit trail requirements, including user authentication, timestamped event logging, and immutable record retention. Calibration intervals are programmable (default: every 200 operating hours), with automatic alerting upon deviation >±5% from baseline spectral profile.
Applications
- Accelerated weathering testing per ISO 4892-3 and ASTM G154 for polymer degradation analysis
- UV crosslinking of thin-film coatings in R&D cleanrooms and pilot-line coating systems
- Photoactivation of TiO₂-based photocatalysts in environmental chemistry reactors
- Validation of UV-sensitive biosensors and DNA damage assay platforms
- Calibration reference source for spectroradiometers (e.g., Ocean Insight HDX, Bentham DMc300) in metrology labs
- Pre-treatment irradiation for surface energy modification of polyolefins prior to plasma bonding
FAQ
What is the recommended ballast type for stable operation?
SEN specifies the BPS-250E high-frequency electronic ballast (250 W, 20–100 kHz output) for optimal arc stability and lifetime extension. Magnetic ballasts are not supported.
Can this lamp be used in ozone-generating configurations?
No. The doped quartz envelope blocks wavelengths below 220 nm; ozone generation (requiring <200 nm VUV emission) is intentionally suppressed.
Is spectral recalibration required after installation?
Yes. Initial spectral verification must be performed within 24 hours of first use using a calibrated spectroradiometer, and repeated every 200 hours or after any mechanical shock event.
Does Aitesen provide NIST-traceable calibration certificates?
Yes — upon order confirmation, customers may request JCSS-accredited irradiance calibration reports issued by SEN’s Osaka Metrology Center, traceable to NMIJ/AIST.
What is the maximum allowable ambient temperature during continuous operation?
The lamp housing must maintain ≤ 45 °C ambient; sustained enclosure temperatures above 50 °C reduce rated lifetime by >40% and risk quartz devitrification.
