LabCompanion PSL-80 Programmable Temperature and Humidity Environmental Test Chamber

Overview

The LabCompanion PSL-80 is a precision-engineered programmable temperature and humidity environmental test chamber designed for rigorous reliability validation, accelerated aging studies, and long-term stability testing in R&D laboratories, quality assurance departments, and manufacturing facilities. It operates on a dual-control principle—simultaneous regulation of air temperature and relative humidity via independent refrigeration, heating, and steam humidification systems—enabling accurate simulation of real-world climatic stress conditions. The chamber’s core architecture integrates a high-efficiency scroll compressor, PID-controlled electric heater banks, and a stainless-steel ultrasonic humidifier with condensate recovery, ensuring stable thermal-hygrometric profiles across its full operational range (−70 ℃ to +150 ℃; 20–98 % RH). Its performance complies with the fundamental requirements of IEC 60068-3-5 (environmental testing guidance), ISO 16750-4 (road vehicles—environmental conditions), and ASTM D4332 (standard practice for conditioning containers, packages, or packaging components for testing). Designed for continuous operation under load, the PSL-80 supports standardized test cycles including temperature ramping, humidity hold, and combined temperature/humidity cycling per MIL-STD-810G Method 502.5 and Method 507.5.

Key Features

• Wide operational envelope: −70 ℃ to +150 ℃ temperature range with 20–98 % RH humidity control, enabling low-temperature freeze-thaw and high-temperature hygrothermal stress testing.
• High-stability control system: ±0.5 ℃ temperature fluctuation and ±2.5 % RH humidity deviation (measured at chamber center, per IEC 60068-3-10), verified using NIST-traceable reference sensors.
• Programmable multi-segment test profiles: Up to 999 steps per program, supporting complex sequences such as ramp-soak-cycle, dwell-time transitions, and user-defined rate limits (e.g., controlled heating at ≤3.5 ℃/min from 20 ℃ to 150 ℃, unloaded).
• Robust chamber construction: 1.2 mm SUS304 stainless-steel inner chamber with double-wall insulation (100 mm polyurethane foam, λ = 0.022 W/m·K), minimizing thermal bridging and energy loss.
• Intelligent safety architecture: Dual independent over-temperature and over-humidity cut-offs, door interlock switch, refrigerant pressure monitoring, and real-time fault logging with audible/visual alerts.
• Ergonomic upright design: Front-access loading with reinforced double-glazed observation window (heated to prevent condensation), adjustable stainless-steel shelves (3 standard, load-rated to 25 kg each), and integrated casters with locking brakes.

Sample Compatibility & Compliance

The PSL-80 accommodates a broad spectrum of physical samples—including electronic assemblies, polymer components, pharmaceutical packaging, automotive ECUs, and battery modules—within its 80 L internal volume (400 × 500 × 400 mm). Airflow is optimized via rear-mounted centrifugal circulation fans with adjustable velocity (0.5–1.5 m/s), ensuring uniform distribution without turbulent hot/cold spots (validated per ISO 16750-4 Annex B). All materials in contact with test specimens conform to RoHS Directive 2011/65/EU and are non-outgassing under elevated humidity. The chamber meets structural and electrical safety requirements per IEC 61010-1 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) and carries CE marking. Optional calibration certificates (traceable to national metrology institutes) and IQ/OQ documentation packages are available to support GLP, GMP, and ISO/IEC 17025-compliant validation workflows.

Software & Data Management

The chamber is equipped with a 7-inch TFT-LCD touchscreen controller running embedded Linux-based firmware with intuitive icon-driven navigation. It supports real-time graphing of up to four parameters (T, RH, setpoint, elapsed time), historical trend recall (up to 30 days at 1-min intervals), and automatic event logging (door openings, alarms, program stops). Data export is enabled via USB 2.0 (CSV format) or optional RS-485/Ethernet interface for integration into centralized MES or LIMS platforms. For regulated environments, an optional FDA 21 CFR Part 11-compliant software package provides electronic signatures, audit trail functionality (including user login/logout, parameter changes, and alarm acknowledgments), and role-based access control (administrator, operator, reviewer). All firmware updates are digitally signed and installed via secure HTTPS protocol.

Applications

• Accelerated life testing of consumer electronics under cyclic thermal-hygrometric stress (e.g., IPC-9701, JEDEC JESD22-A104).
• Stability assessment of medical device packaging per ISO 11607-1 and ASTM F1980 (accelerated aging using Arrhenius modeling).
• Qualification of lithium-ion battery modules per UN 38.3 Section 40.3 (thermal cycling) and IEC 62660-2 (humidity exposure).
• Material compatibility testing of adhesives, sealants, and composites under combined low-temperature embrittlement and high-RH swelling conditions.
• Environmental stress screening (ESS) of aerospace avionics per RTCA DO-160 Section 4 (temperature) and Section 5 (humidity).
• Pre-conditioning of test specimens prior to mechanical, electrical, or optical characterization per ASTM E171 and ISO 291.

FAQ

What is the maximum allowable sample load for thermal stability?
The chamber maintains specified uniformity and stability with up to 15 kg of thermally inert mass placed centrally on the middle shelf. For active heat-generating devices (e.g., powered PCBs), derating is recommended—contact technical support for load-specific validation protocols.
Can the PSL-80 perform sub-zero humidity testing?
No—the minimum RH is 20 % at all temperatures. For tests requiring <20 % RH (e.g., dry storage validation), consider the PDR-series chambers with desiccant-assisted dehumidification.
Is remote monitoring supported out of the box?
Standard configuration includes local USB data export only. Ethernet or Wi-Fi connectivity requires the optional Network Interface Module (NIM-PSL), which enables Modbus TCP, SNMP, and HTTP API access.
Does the system include calibration documentation?
A factory-as-tested report (with sensor verification points at −40 ℃, 25 ℃, +85 ℃, and 30 %/60 %/90 % RH) is supplied. Full ISO/IEC 17025-accredited calibration with uncertainty budget is available as an add-on service.
What maintenance intervals are recommended?
Compressor oil and refrigerant levels should be inspected annually; humidifier tank and steam lines require quarterly cleaning with citric acid solution; air intake filters must be cleaned every 30 operating days.