Yoyi RQH-400 Artificial Climate Chamber (400 L)
| Brand | Yoyi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Model | RQH-400 |
| Power Supply | AC 220 V, 50 Hz |
| Temperature Range (with light) | 10–60 °C |
| (without light) | 0–60 °C |
| Temperature Uniformity | ±1 °C |
| Temperature Resolution | 0.1 °C |
| Humidity Range | 40–95 %RH |
| Humidity Deviation | ±5–7 %RH |
| Illumination Intensity | 0–25,000 lx (6-level adjustable) |
| Programmable Cycles | 99 cycles × 30 segments × 99 h 59 min per segment |
| Internal Dimensions (W×D×H) | 680 × 550 × 1050 mm |
| Nominal Volume | 400 L |
| Shelf Capacity | 3 adjustable stainless-steel shelves |
| Input Power | 3200 W |
| Operating Ambient | 5–30 °C |
| Construction | Cold-rolled steel exterior, mirror-finish stainless-steel interior |
| Air Circulation | Imported centrifugal blower with optimized duct design |
| Door Structure | Double-layer door with sealed tempered glass window |
| Continuous Operation Capability | ≥360 hours |
Overview
The Yoyi RQH-400 Artificial Climate Chamber is a precision-engineered environmental simulation system designed for long-term, stable replication of complex climatic conditions in laboratory and industrial research settings. Based on closed-loop PID-controlled thermoregulation, active humidification via integrated electric heating elements and high-accuracy capacitive humidity sensors, and programmable multi-level illumination, the chamber delivers reproducible control over temperature, relative humidity, and photoperiod—three critical variables in biological and ecological experimentation. Its architecture adheres to fundamental principles of environmental chamber design: thermal inertia minimization through insulated double-door construction, uniform air distribution via a calibrated forced-air circulation system, and operational robustness validated for uninterrupted operation exceeding 360 hours under nominal load. The RQH-400 serves as a core platform for studies requiring strict environmental fidelity—including seed germination kinetics, photomorphogenesis assays, microbial growth profiling under diurnal cycles, and BOD incubation protocols compliant with ISO 5815-1 and APHA Standard Methods.
Key Features
- Triple-parameter independent control: Simultaneous, decoupled regulation of temperature (0–60 °C), humidity (40–95 %RH), and illumination (0–25,000 lx, six discrete intensity levels).
- Advanced microprocessor-based controller with wide-view LCD interface: Supports up to 99 multi-step programs, each comprising 30 configurable segments with individual setpoints for temperature, humidity, light intensity, and duration (up to 99 h 59 min per segment).
- Optimized thermal and optical architecture: Triple-sided LED-compatible lighting array ensures uniform irradiance distribution without shadow zones; double-glazed observation door with silicone-sealed perimeter maintains thermal integrity during visual monitoring.
- Durable, contamination-resistant chamber construction: Mirror-polished 304 stainless-steel interior walls and floor facilitate cleaning and prevent microbial retention; cold-rolled steel outer casing with powder-coated finish provides mechanical stability and corrosion resistance.
- Intelligent air management system: High-efficiency imported centrifugal fan coupled with a symmetrical airflow duct layout achieves ≤±1 °C temperature uniformity across the full 400 L working volume (per IEC 60068-3-5 test methodology).
- Ergonomic mobility and installation flexibility: Four swivel casters with locking brakes + two adjustable leveling feet enable secure positioning on uneven surfaces and effortless relocation within shared lab spaces.
Sample Compatibility & Compliance
The RQH-400 accommodates standard microbiological and botanical sample formats including Petri dishes (up to 150 mm diameter), Erlenmeyer flasks (up to 2 L), plant growth trays (max. 600 × 450 mm footprint), and small vertebrate/invertebrate housing units. Its internal dimensions (680 × 550 × 1050 mm) and three-tier adjustable shelving support flexible spatial configuration. The chamber meets structural and safety requirements outlined in IEC 61010-1 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) and complies with electromagnetic compatibility standards per EN 61326-1. While not certified for GMP or FDA 21 CFR Part 11 out-of-the-box, its programmable logging capability (via optional RS485/Modbus interface) supports integration into validated environments where electronic record integrity, audit trails, and user access controls are implemented at the facility level.
Software & Data Management
The embedded controller stores real-time temperature, humidity, and illumination status data internally with timestamped logging at user-defined intervals (1–60 min). Historical datasets (up to 30 days at 10-min resolution) can be exported via USB flash drive in CSV format for post-processing in MATLAB, Python (Pandas), or statistical analysis platforms. Optional PC-based software (Yoyi ClimateLink v3.2) enables remote monitoring, alarm notification via email/SMS, and automated report generation aligned with GLP documentation templates. All parameter changes are logged with operator ID, timestamp, and pre-/post-value entries—providing traceability essential for ISO/IEC 17025-accredited laboratories.
Applications
- Plant physiology research: Photoperiod-controlled germination trials, vernalization studies, and stress-response assays under defined hygrothermal regimes.
- Microbial ecology: Aerobic BOD5 determination per ISO 5815-1; fungal sporulation kinetics; and antibiotic susceptibility testing under variable humidity.
- Agricultural biotechnology: Seed viability assessment, tissue culture acclimatization, and pollinator behavior studies under simulated seasonal light-temperature profiles.
- Environmental toxicology: Chronic exposure testing of aquatic invertebrates (e.g., Daphnia magna) using standardized OECD 202 protocols with controlled photoperiod and thermal gradients.
- Veterinary science: Rearing of model organisms (e.g., zebrafish embryos, Drosophila melanogaster) under precisely regulated developmental climate parameters.
FAQ
What is the maximum allowable ambient temperature for continuous operation?
The RQH-400 is rated for stable performance when installed in rooms maintained between 5 °C and 30 °C, with relative humidity below 80 %RH non-condensing.
Can the chamber maintain humidity setpoints below 40 %RH?
No—the system’s humidification architecture is optimized for 40–95 %RH; dehumidification requires external desiccant or refrigerated dry air supply.
Is the illumination spectrum customizable?
The base unit provides broad-spectrum white light; however, the triple-side mounting rails accept third-party LED modules (e.g., 660 nm red, 450 nm blue, or full-spectrum daylight simulators) with compatible drivers.
Does the controller support password-protected parameter editing?
Yes—three-tier user access (Operator, Supervisor, Administrator) with configurable permissions and mandatory login authentication.
What calibration certificates are supplied with delivery?
A factory-issued temperature and humidity verification report (traceable to NIM, China) is included; ISO/IEC 17025 calibration by an accredited第三方 lab is available upon request.
