PH-80 Compact Temperature and Humidity Controlled Environmental Test Chamber

Overview

The PH-80 Compact Temperature and Humidity Controlled Environmental Test Chamber is an upright benchtop system engineered for precise, repeatable simulation of climatic conditions in R&D laboratories, quality assurance departments, and material validation facilities. Based on dual-refrigeration and PID-controlled steam humidification architecture, the chamber delivers stable thermal-hygrometric environments across a wide operational envelope—from cryogenic low-temperature storage at −70 °C to high-temperature aging at +180 °C, with humidity modulation between 20 % and 98 % RH. Its compact footprint (970 × 800 × 650 mm external) and stackable mechanical design enable efficient spatial utilization in constrained lab settings—particularly valuable for multi-unit deployment in comparative stability studies or parallel condition screening. The unit complies with fundamental structural and safety requirements outlined in IEC 60068-3-5 (Environmental testing — Part 3-5: Supporting documentation and guidance — Confirmation of the performance of temperature chambers) and serves as a foundational platform for accelerated aging, shelf-life assessment, and environmental stress screening per ISO 16750-4, ASTM D4329, and JIS Z 8701.

Key Features

• Stackable mechanical frame with reinforced base plate and interlocking alignment guides—enables vertical stacking without structural compromise or airflow obstruction.
• Dual-zone air circulation system featuring tangential blower and baffle-guided laminar flow path ensures uniform temperature and humidity distribution (±1 °C / ±3 % RH across internal volume).
• Independent PID control loops for heating (SSR-driven resistive elements) and humidification (ultrasonic mist generator + steam heater), each with real-time feedback from calibrated platinum RTD (Pt100) and capacitive RH sensors.
• Integrated power failure recovery function with non-volatile memory retains setpoints, elapsed time, and active test profiles—resumes operation automatically upon power restoration.
• Programmable timing relay output (dry contact, 250 VAC/3 A) supports synchronized activation of external data loggers, optical sensors, or dynamic load testers during defined test phases.
• Front-access service panel with quick-release fasteners simplifies maintenance of filters, condensate drain lines, and humidifier reservoirs—no tools required.

Sample Compatibility & Compliance

The PH-80 accommodates samples up to 400 × 500 × 400 mm (W×H×D) within its insulated stainless-steel inner chamber. Its design permits unrestricted placement of electronic assemblies, polymer specimens, pharmaceutical packaging, printed circuit boards, and coated substrates—provided sample mass does not exceed 15 kg and thermal mass remains within chamber thermal inertia limits. All electrical components meet CE marking requirements under Directive 2014/30/EU (EMC) and 2014/35/EU (LVD). The chamber’s control software architecture supports audit trail generation and user-level access control—facilitating compliance with GLP (Good Laboratory Practice) and GMP (Good Manufacturing Practice) documentation frameworks. While not certified to full FDA 21 CFR Part 11 out-of-the-box, it provides timestamped event logging and configurable password protection suitable for validation-ready deployments.

Software & Data Management

Equipped with a 7-inch color TFT touchscreen HMI, the PH-80 offers intuitive navigation through multi-step test programs (up to 99 segments, 999 cycles), real-time graphing of temperature/humidity trends, and USB export of CSV-formatted datasets (sample interval: 1–600 seconds). Optional RS-485 Modbus RTU interface enables integration into centralized SCADA or LIMS environments. Third-party data acquisition systems—including those compliant with IEEE 1451.2 transducer standards—can connect via analog 4–20 mA outputs for T/RH signals. Firmware updates are performed via SD card slot, with version history and checksum verification embedded in the bootloader.

Applications

• Accelerated aging of elastomers, adhesives, and composite laminates per ASTM D573 and ISO 188.
• Stability testing of solid-dose pharmaceuticals and medical device packaging per ICH Q1A(R3) and USP <1151>.
• Functional verification of automotive ECUs under combined thermal-hygrometric stress (ISO 16750-4 Level 3).
• Pre-conditioning of lithium-ion battery cells prior to electrochemical cycling (IEC 62660-1).
• Calibration verification of hygrometers and thermometers against NIST-traceable references.
• Material compatibility screening for conformal coatings and encapsulants used in aerospace electronics.

FAQ

What is the maximum allowable sample weight inside the PH-80 chamber?

The recommended maximum static load is 15 kg. Exceeding this may impair airflow uniformity and extend stabilization time beyond specified tolerances.
Can the PH-80 be validated for IQ/OQ/PQ protocols?

Yes—its documented sensor calibration points, traceable to national metrology institutes, and programmable ramp/soak profiles support formal qualification per ASTM E2500 and ISO/IEC 17025 requirements.
Is remote monitoring supported via Ethernet or Wi-Fi?

Standard configuration includes only RS-485 and USB interfaces. Ethernet connectivity requires optional gateway module (Model ETH-GW-01), which adds TCP/IP Modbus TCP and SNMP v2c support.
Does the chamber include built-in data logging capacity?

Yes—the internal flash memory stores up to 30 days of 10-second-interval data (temperature, humidity, alarm status, and setpoint history) even during power interruption.
Are replacement humidifier cartridges and refrigerant service kits available?

Original-equipment humidifier modules (Part No. HM-80-ULS) and R404A recharge kits (Part No. RF-KIT-PH80) are stocked and shipped globally with 48-hour dispatch from Guangdong warehouse.