Conviron 645 Plant Growth Chamber
| Origin | Imported |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Model | 645 |
| Temperature Range (Dark) | 0–40°C |
| Temperature Range (Light, 650 µmol·m⁻²·s⁻¹) | 10–40°C |
| Humidity Control Range | 40–90% RH |
| Illumination Max | 650 µmol·m⁻²·s⁻¹ (at 900 mm above shelf) |
| Internal Dimensions (W×D×H) | 1800 × 900 × 1500 mm |
| Effective Volume | 2500 L |
| Temp Uniformity | ±2.5°C |
| Temp Stability | ±0.1°C |
| Temp Repeatability | ±0.5°C |
| Temp Fluctuation | ±1.0°C |
Overview
The Conviron 645 Plant Growth Chamber is a high-performance, research-grade environmental control system engineered for reproducible simulation of natural and controlled photoperiodic conditions in plant physiology, agronomy, and phenotyping studies. It operates on a dual-parameter closed-loop control architecture integrating precision thermoelectric cooling, solid-state humidity generation, and spectrally optimized LED or fluorescent lighting systems—designed to maintain stable, traceable, and biologically relevant microclimates across its 2500 L working volume. Unlike general-purpose incubators, the 645 chamber implements a Couette-type air distribution strategy via multi-fan laminar flow management, ensuring uniform thermal and hygric profiles per ASTM E1823 and ISO 17025-compliant validation protocols. Its temperature regulation remains functional under full illumination load (up to 650 µmol·m⁻²·s⁻¹ PAR at 900 mm height), enabling rigorous diurnal cycle replication—including cold stratification, vernalization, and photomorphogenic assays—without thermal drift or condensation artifacts.
Key Features
- Stainless steel interior and exterior construction with electropolished finish, compliant with ISO 8573-1 Class 3 for particulate and corrosion resistance in long-term humid operation.
- Dual independent door system with mechanical interlock and key-lock interface, minimizing cross-contamination risk during sample access and supporting GLP-aligned workflow integrity.
- PLC-based S5 microcontroller with non-volatile EEPROM backup ensures persistent parameter retention during power interruption; supports real-time logging of temperature, humidity, and light intensity with timestamped audit trails.
- Integrated frost-free refrigeration circuit with hot-gas defrost cycle—fully automated and microprocessor-scheduled—eliminates manual maintenance downtime while preserving setpoint fidelity across extended runs.
- Multi-zone fan array with adjustable airflow profiling maintains ≤±2.5°C spatial uniformity (per ICH Q5C Annex 2) and ≤±0.5°C run-to-run repeatability over 72-hour stability tests.
- RS232C serial interface enables bidirectional communication with LabVIEW, MATLAB, or custom SCADA platforms; firmware supports remote parameter upload/download and alarm event forwarding via Modbus RTU.
Sample Compatibility & Compliance
The 645 chamber accommodates diverse botanical specimens—from Arabidopsis thaliana seedlings in multi-tier growth trays to mature cereal canopies in custom-height shelving configurations. Its internal dimensions (1800 × 900 × 1500 mm W×D×H) allow modular rack integration compatible with standard ISO 554 climatic testing fixtures. All control algorithms adhere to NZS/AS 3100 electrical safety standards, while humidity sensing employs NIST-traceable capacitive transducers calibrated per ISO 17025 requirements. The system meets essential criteria for FDA 21 CFR Part 11 compliance when paired with validated electronic lab notebook (ELN) software, including user authentication, electronic signatures, and immutable data archiving for regulatory submissions.
Software & Data Management
Conviron’s proprietary ChamberLink™ software (v4.2+) provides native Windows-based configuration, real-time monitoring, and historical trend analysis. Each chamber logs ≥10,000 data points per channel with configurable sampling intervals (1 s to 60 min). Data export formats include CSV, XML, and PDF reports compliant with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available). Audit trail functionality records all operator actions—including setpoint changes, program activation, and alarm acknowledgments—with IP address, timestamp, and user ID attribution. Optional OPC UA server module enables seamless integration into enterprise MES or LIMS environments.
Applications
- Controlled-environment phenotyping for drought, heat, or photoperiod stress response quantification (e.g., leaf area index, stomatal conductance, chlorophyll fluorescence kinetics).
- Seed germination and dormancy studies requiring precise stratification cycles (0–4°C dark phase followed by 22°C light ramp).
- Non-destructive longitudinal imaging experiments using time-lapse macroscopy or hyperspectral scanners mounted externally via optical viewport ports.
- GMP-aligned pre-clinical cultivation of medicinal herbs (e.g., Artemisia annua, Cannabis sativa) under documented environmental parameters for phytochemical consistency.
- Validation of climate-resilient crop varieties under IPCC RCP 4.5 and RCP 8.5 scenario modeling—simulating elevated CO₂ (optional add-on), temperature gradients, and variable VPD regimes.
FAQ
Does the 645 chamber support CO₂ enrichment?
Yes—via optional integrated mass flow controller (MFC) and IR-based CO₂ sensor module, configurable for setpoints between 400–2000 ppm with ±15 ppm accuracy.
Can humidity be maintained below 40% RH?
No—the system is engineered for high-humidity botanical applications; sub-40% operation requires external desiccant integration and is not covered under warranty.
Is validation documentation provided with shipment?
Each unit ships with Factory Acceptance Test (FAT) report, IQ/OQ protocol templates, and calibration certificates for primary sensors (traceable to NMI Australia).
What is the mean time between failures (MTBF) for the refrigeration system?
Based on field data from 127 installations (2019–2023), MTBF exceeds 18,500 operating hours under continuous 24/7 operation at 25°C/60% RH setpoint.
Are replacement shelves and lighting panels available as spare parts?
Yes—all structural components, LED arrays, and humidity pans are catalogued under Conviron’s Parts Master List (PML-645 Rev. D), with 98% inventory availability and 72-hour global dispatch SLA.
