PSI Fyto Smart LED Light Panel Series
| Brand | PSI (Czech Republic) |
|---|---|
| Origin | Czech Republic |
| Model | Fyto-A2/A3/B2/B3/C/MULTI Series |
| Light Source Type | Programmable Multi-Spectral LED Array |
| Active Area Options | 27 × 81 cm or 27 × 41 cm |
| Spectral Channels | Cool White (5000–6500 K), Deep Red (660 nm), Far-Red (735 nm), plus optional Blue (450 nm), Green (530 nm), IR (850 nm) |
| Photon Flux Density | Up to 1600 µmol(photon)·m⁻²·s⁻¹ (at 50 cm, MULTI configuration) |
| Intensity Control Range | 0–100% in 0.1% increments |
| Uniformity | ±5% across active area (measured per ASTM E2917-20) |
| LED Lifetime | 60,000–70,000 h at rated output |
| Power Supply | 100–240 V AC, 50/60 Hz |
| Operating Temperature | 0–55 °C |
| Relative Humidity | 0–80% RH (non-condensing) |
| Control Interface | RS-485, USB, Ethernet (Light Studio v4.85) |
| Compliance | CE, RoHS, IEC 61000-6-3 (EMI), IEC 61000-6-2 (Immunity) |
| Software Features | Predefined diurnal cycles, cloud simulation, pulse modulation (µs–h), multi-channel spectral blending, GLP-compliant audit trail (optional) |
Overview
The PSI Fyto Smart LED Light Panel Series is a precision-engineered, spectrally tunable illumination platform designed for controlled-environment plant physiology research. Built upon high-efficiency, narrow-band LED technology, the system delivers photobiologically relevant photon flux with exceptional spatial uniformity and temporal fidelity. Unlike broad-spectrum lamps or unregulated LED arrays, Fyto panels employ calibrated, independently addressable spectral channels—including cool white (5000–6500 K), deep red (660 nm), and far-red (735 nm)—enabling quantitative manipulation of phytochrome photoequilibria (Pfr/Pr ratios), cryptochrome activation, and photosynthetic photon flux density (PPFD). Each panel integrates thermal management, optical collimation (±6° for visible LEDs), and factory-calibrated irradiance sensors to ensure reproducibility across experiments and laboratories. The system is engineered for integration into growth chambers, walk-in climate rooms, phenotyping platforms, and custom-built plant growth facilities—supporting both steady-state illumination and dynamic light regimes aligned with circadian biology and stress-response protocols.
Key Features
- Multi-spectral LED architecture with independent control of up to seven optical channels (blue, green, red, deep red, cool white, far-red, near-infrared) in MULTI configuration
- High uniformity illumination (±5% PPFD variation across active area per ASTM E2917-20 test methodology)
- Precise intensity regulation from 0.1% to 100% in 0.1% increments, enabling sub-threshold photomorphogenic studies
- Extended operational lifetime: 60,000–70,000 hours at nominal output, verified under continuous 25°C ambient conditions
- Modular mechanical design with integrated mounting brackets, low-profile housing, and IP20-rated enclosure for indoor laboratory use
- Dual control pathways: PC-based Light Studio 485 software (with GLP-compliant audit trail, user roles, and electronic signature support) and standalone LC200 controller with four-button interface and microsecond-level pulse resolution
- Dynamic waveform generation including continuous, square-pulse, sinusoidal, triangular, and stochastic cloud-simulation profiles
Sample Compatibility & Compliance
Fyto panels are compatible with standard plant growth vessels—including Petri dishes, Magenta boxes, multi-well plates, hydroponic trays, and soil-filled pots—without requiring optical coupling or secondary diffusers. The 27 × 41 cm and 27 × 81 cm form factors accommodate single-tier and multi-tier growth rack configurations. All models comply with EU regulatory frameworks: CE marking under the Low Voltage Directive (2014/35/EU) and Electromagnetic Compatibility Directive (2014/30/EU); RoHS 2011/65/EU for hazardous substance restriction; and IEC 61000-6-2/-6-3 for immunity and emission performance. For regulated environments, Light Studio 485 supports 21 CFR Part 11 compliance when configured with electronic signatures, audit logging, and role-based access control—making it suitable for GLP and GMP-aligned plant phenotyping workflows.
Software & Data Management
Light Studio 485 provides a graphical programming environment for defining complex light regimes with temporal resolution down to 100 ms. Users configure logical light channels (e.g., “Far-Red Pulse Train”), assign spectral compositions, set ramp rates, and schedule transitions across 254 physical devices and unlimited virtual channels. The software includes pre-validated diurnal templates (e.g., sunrise/sunset gradients, seasonal photoperiod shifts), cloud cover simulation algorithms based on stochastic light attenuation models, and export functionality for CSV, JSON, and HDF5 formats. Audit logs record all parameter changes, user logins, and execution timestamps—retained for ≥36 months with configurable backup policies. The LC200 controller operates autonomously with non-volatile memory for up to 224 programmable stages and supports firmware updates via USB.
Applications
- Photosynthetic acclimation studies requiring precise PPFD ramping and spectral rebalancing during light adaptation protocols
- Phytochrome-mediated developmental assays (e.g., de-etiolation, shade avoidance, flowering time quantification)
- High-throughput phenotyping under controlled photoperiods, including circadian entrainment and free-running rhythm analysis
- Abiotic stress induction using defined light stressors—e.g., high-intensity UV-A/blue exposure, far-red enrichment for elongation responses, or pulsed-light oxidative challenge
- Chlorophyll fluorescence imaging pre-conditioning, where uniform, spectrally defined actinic light ensures consistent QA reduction states across sample cohorts
- Non-plant applications such as microbial photobioreactor illumination, circadian entrainment of mammalian cell cultures, and optogenetic stimulation setup calibration
FAQ
What spectral bands are factory-standard on Fyto panels?
All base models include cool white (5000–6500 K), deep red (660 nm), and far-red (735 nm) LEDs. Blue (450 nm), green (530 nm), and near-infrared (850 nm) are available as optional channels in the MULTI configuration.
Can Fyto panels be used in sterile tissue culture hoods?
Yes—panels operate fanlessly, generate minimal radiant heat (<15 K surface temperature rise at full output), and meet IP20 ingress protection for cleanroom-adjacent use. Sterile barrier compatibility requires external laminar flow validation.
Is remote monitoring and control supported?
Yes—Light Studio 485 supports TCP/IP and Modbus RTU over Ethernet, enabling integration with building management systems (BMS) and centralized lab automation platforms.
How is irradiance calibrated and traceable?
Each panel undergoes factory calibration using NIST-traceable spectroradiometers (Ocean Insight QE Pro). Calibration certificates include spectral power distribution (SPD) curves, PPFD maps at multiple distances, and uncertainty budgets per ISO/IEC 17025 requirements.
Do Fyto panels support synchronization with external measurement systems?
Yes—TTL trigger input/output ports enable hardware-synced activation with fluorometers (e.g., Walz IMAGING-PAM), gas exchange analyzers (e.g., LI-COR 6800), or high-speed cameras for time-resolved phenotyping.
