PH Series Temperature and Humidity Controlled Chamber
| Origin | Guangdong, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | PH |
| Price Range | USD 1,400 – 7,000 |
| Instrument Type | Upright |
| Temperature Range | −70 °C to +180 °C |
| Humidity Range | 5–98 % RH |
| Temperature Uniformity | ≤ ±2 °C |
| Temperature Fluctuation | ±1 °C (high-temp), ±2 °C (low-temp) |
| Humidity Uniformity | ≤ ±3 % RH |
| Humidity Fluctuation | ±3 % RH |
| Heating Rate | 1.0–3.0 °C/min |
| Temperature Resolution | 0.1 °C |
| Humidity Resolution | 0.1 % RH |
| Temperature Control Accuracy | ±0.3 °C |
| Humidity Control Accuracy | ±3 % RH |
| Internal Dimensions (typical) | W500 × H600 × D400 mm |
| External Dimensions (typical) | W1070 × H900 × D650 mm |
Overview
The PH Series Temperature and Humidity Controlled Chamber is an upright environmental test chamber engineered for precision simulation of climatic conditions in laboratory and quality assurance environments. It operates on a dual-loop control architecture—separate PID-regulated systems for temperature (via electric heating and cascade refrigeration) and humidity (via steam generation and solid-state desiccant or mechanical dehumidification)—ensuring independent, stable regulation across the full operational envelope. Designed for compliance-critical applications including IEC 60068-2, MIL-STD-810H, and ISO 16750-4, the chamber supports accelerated aging, storage stability testing, and pre-conditioning of electronic components, polymers, pharmaceutical packaging, and automotive materials under controlled thermal-hygrometric stress.
Key Features
- Robust stainless-steel inner chamber with seamless welded construction and electrostatically coated outer enclosure for corrosion resistance and long-term dimensional stability.
- Optimized air distribution system featuring tangential multi-blade centrifugal fans and perforated baffle plates, delivering uniform temperature and humidity distribution (±1 °C / ±3 % RH across working volume) without hot/cold spots.
- Dual-stage cascade refrigeration system with environmentally compliant R404A/R23 refrigerant blend, enabling reliable operation down to −70 °C without liquid nitrogen dependency.
- Integrated safety architecture: over-temperature cut-off, compressor high-pressure protection, humidifier dry-run prevention, phase failure detection, and automatic power recovery with memory retention for setpoints and runtime after mains interruption.
- Modular expansion interface supporting optional add-ons—including analog/digital I/O modules for external sensor integration, 4–20 mA process signal output, and relay-controlled timing contacts for synchronized auxiliary equipment (e.g., data loggers, UV irradiation units, or vibration shakers).
Sample Compatibility & Compliance
The PH chamber accommodates standard test specimens up to 50 L internal volume (W500 × H600 × D400 mm), with load capacity optimized for non-exothermic/non-hygroscopic samples. It meets structural and operational requirements for ASTM D4332 (conditioning of plastics), ISO 4892-2 (plastics exposure to humidity and temperature), and USP (pharmaceutical packaging stability). Optional validation packages include IQ/OQ documentation templates aligned with GLP and GMP Annex 15 principles. The control system supports audit trail logging per FDA 21 CFR Part 11 when paired with validated software (e.g., WinTest Pro v5.2 or higher).
Software & Data Management
Standard controller features a 7-inch color TFT touchscreen with intuitive menu navigation, real-time trend graphs, and multi-segment programmable profiles (up to 99 steps, 999 cycles). Data logging is performed internally at user-selectable intervals (1–600 seconds) with ≥10,000-point memory; export via USB 2.0 to CSV or Excel-compatible formats. Optional Ethernet/WiFi connectivity enables remote monitoring and centralized fleet management through TCP/IP-based SCADA integration. All recorded parameters—including chamber setpoint, actual temperature/humidity, alarm status, and runtime—are timestamped with millisecond resolution and support traceability under ISO/IEC 17025-accredited calibration workflows.
Applications
- Accelerated shelf-life evaluation of medical device packaging under ICH Q1A(R2) and ISO 11607-1 protocols.
- Thermal cycling and humidity soak testing of PCB assemblies prior to HALT/HASS qualification.
- Material property characterization—dimensional stability, coefficient of thermal expansion (CTE), and moisture absorption kinetics—for composites and elastomers.
- Pre-conditioning of lithium-ion battery cells before electrical performance testing per UN 38.3 Section 38.3.4.
- Validation of HVAC filter media performance under variable RH and temperature loads per EN 779:2012.
FAQ
What is the maximum allowable sample mass that maintains specified temperature/humidity uniformity?
Uniformity specifications assume ≤15 kg of non-heat-generating, low-thermal-mass samples placed centrally on the standard stainless-steel shelf. For heavier or thermally active loads, consult the chamber’s thermal load derating curve provided in the technical manual.
Can the PH chamber be integrated into a LIMS or MES environment?
Yes—via Modbus TCP or OPC UA protocol support (optional firmware upgrade), enabling bidirectional communication with laboratory information management systems for automated test initiation, parameter synchronization, and result ingestion.
Is third-party calibration certification available?
Factory-calibrated sensors are supplied with NIST-traceable certificates. On-site calibration services—including uncertainty analysis per ISO/IEC 17025—are offered globally through accredited partners upon request.
Does the system comply with energy efficiency standards such as ENERGY STAR or EU Ecodesign Directive?
While not ENERGY STAR certified (as it falls outside scope for environmental chambers), the PH series meets EU ErP Directive 2009/125/EC Tier 2 efficiency benchmarks for refrigerated equipment, with typical COP > 2.1 at 25 °C/60 % RH steady-state operation.
