Hoenele SFL Floodlight

Overview

The Höenle SFL Floodlight is a high-intensity, laboratory- and industrial-grade illumination system engineered for precision optical testing, environmental simulation, and photobiological exposure applications. Designed and manufactured in Germany, the SFL integrates robust thermal management, electrical safety compliance, and mechanical adaptability to meet the demanding requirements of climate chambers, wind tunnels, solar simulation setups, and accelerated weathering test environments. Its core operation relies on high-intensity discharge (HID) lamp technology—specifically metal halide (HQI) and hydride metal iodide (HMI) sources—delivering stable, spectrally consistent broadband irradiance across UV-A, visible, and near-infrared bands. The fixture’s optical architecture ensures uniform 60° symmetric beam distribution without hotspots, enabling reproducible irradiance profiles across target surfaces. All internal electronics—including EVG-series high-frequency electronic ballasts with active power factor correction—are fully integrated and certified for continuous operation under variable ambient conditions.

Key Features

• Extruded aluminum housing with reinforced aluminum plate construction for structural rigidity and thermal dissipation
• High-temperature powder-coated finish (rated to ≥200 °C surface temperature) ensuring long-term stability in thermal cycling environments
• Integrated, thermally isolated igniter module—field-replaceable without disassembly or specialized tools
• Front-access lamp replacement mechanism compatible with HQI 2000 W, HMI 2500 W/DXS, and HMI 4000 W/DXS lamps
• Low-temperature lamp socket design (<65 °C under continuous operation) minimizing thermal stress on lamp bases and wiring
• Optimized airflow path and optional rear extension (380 mm depth) for enhanced convection cooling in confined enclosures
• Electronically synchronized mechanical shutter with fail-safe radiation blocking and automatic 50% output reduction upon closure

Sample Compatibility & Compliance

The SFL Floodlight is compatible with standardized irradiance measurement protocols per ISO 4892-2 (plastics—exposure to laboratory light sources), ASTM G155 (accelerated exposure testing using xenon-arc apparatus), and IEC 60068-2-5 (environmental testing—radiation, solar). While not a radiometric calibration standard itself, its spectral output and spatial uniformity support traceable irradiance delivery when paired with NIST-traceable reference sensors (e.g., calibrated photodiodes or thermopiles). The fixture meets CE marking requirements under the EU Electromagnetic Compatibility Directive 2014/30/EU and Low Voltage Directive 2014/35/EU. Ballast units comply with EN 61000-3-2 (harmonic current emissions) and EN 61000-3-3 (voltage fluctuations). No built-in data logging or digital interface is provided; integration into automated test systems requires external control via dry-contact shutter input and analog 0–10 V dimming signals.

Software & Data Management

The SFL Floodlight operates as a standalone analog-controlled illumination source. It does not include embedded firmware, network connectivity, or proprietary software. System-level data acquisition and sequencing must be implemented externally using programmable logic controllers (PLCs), DAQ systems, or LabVIEW-based platforms. Shutter actuation and lamp dimming are supported via industry-standard 24 V DC dry-contact closure and 0–10 V analog voltage inputs, respectively. For GLP/GMP-regulated environments, users may configure external audit trails for shutter status, power-on duration, and lamp runtime using third-party SCADA or MES systems. No FDA 21 CFR Part 11 functionality is natively available; compliance depends entirely on the external control infrastructure.

Applications

• Accelerated aging tests for polymers, coatings, and composites in climate-controlled chambers
• Solar irradiance simulation in wind tunnel aerothermal studies
• Photostability assessment of pharmaceuticals and medical devices per ICH Q1B guidelines
• Calibration reference illumination for imaging systems, spectroradiometers, and camera sensors
• UV curing process development requiring stable broadband excitation
• Environmental stress screening (ESS) of optoelectronic components under combined thermal and radiant load

FAQ

Is the SFL Floodlight suitable for Class I, Division 2 hazardous locations?
No. The SFL is not certified for hazardous (explosive atmosphere) environments and lacks explosion-proof enclosure rating.
Can the SFL be operated continuously for 24/7 testing cycles?
Yes—its thermal design, sealed ballast compartment, and shutter-rated continuous-duty mechanism support unattended operation within specified ambient temperature limits (5–40 °C).

Does Höenle provide spectral power distribution (SPD) data for each lamp type?
Yes—manufacturer-provided SPD curves for HQI 2000 W and HMI 2500/4000 W/DXS lamps are supplied with each system, referenced to 1 m distance and stabilized operating conditions.

Is remote monitoring of lamp voltage or current possible?
Not natively. Real-time electrical parameter monitoring requires external current/voltage transducers interfaced with a DAQ system.

Are replacement lamps and igniters stocked by authorized distributors?
Yes—Höenle maintains global inventory of OEM-specified HQI and HMI lamps, igniters, and front glasses (H1/H2) through its authorized distribution network.