Tenney Lunaire SS Steady-State Environmental Test Chamber

Overview

The Tenney Lunaire SS Steady-State Environmental Test Chamber is an industrial-grade, high-reliability environmental simulation system engineered for long-term thermal aging, accelerated stability testing, and controlled-condition material evaluation in compliance with ICH Q1A(R3), ASTM D3045, ISO 11357-1, and USP . Designed and manufactured by Blue M (a Quincy Technologies company) in the United States, this chamber employs a robust dual-mode thermal architecture—combining rapid-response NiCr heating elements with a single-stage reciprocating compressor utilizing non-CFC refrigerant—to deliver precise, repeatable temperature control across its full operational range of −70°C to +180°C. Unlike transient cycling chambers, the Lunaire SS is optimized for sustained steady-state operation, minimizing thermal overshoot and drift during extended exposure periods exceeding 3,000 hours. Its large internal volume—available in three standard configurations from 10 ft³ (283 L) to 30 ft³ (849 L)—supports full-size packaging validation, bulk component aging, and multi-sample rack configurations without compromising uniformity or airflow integrity.

Key Features

• Three scalable chamber sizes with internal dimensions ranging from 1016 mm × 2057 mm × 2007 mm to 1626 mm × 2616 mm × 2515 mm (W×H×D), enabling flexible integration into QC labs and pilot manufacturing spaces.
• Temperature uniformity maintained at ±1.0°C throughout the working volume under steady-state conditions; stability of ±0.5°C over time, verified per ASTM E744 and IEC 60068-3-5.
• Watlow F4T controller with INTUITION™ process control firmware featuring a 4.3-inch color touchscreen, TRU-TUNE+ adaptive PID algorithm, real-time clock with battery backup, and support for up to 40 programmable ramp-and-soak profiles.
• Vapor-Flo V humidity generation system (optional) capable of delivering 20–95% RH within a dry-bulb range of +20°C to +85°C, with dew point constrained to ≥5°C—validated for high-humidity stress testing including 85°C/94% RH protocols.
• Externally mounted fan motor with balanced airfoil blades ensures laminar, low-turbulence circulation and eliminates internal heat sources that could compromise thermal homogeneity.
• Integrated safety architecture includes independent high- and low-limit temperature cutoff circuits with audible alarm activation, door gasket channel drainage, and front-panel-accessible USB/Ethernet ports for local data export and remote monitoring via Modbus TCP.

Sample Compatibility & Compliance

The Lunaire SS accommodates a broad spectrum of physical samples—from pharmaceutical primary packaging (blister cards, vials, syringes) and polymer components to aerospace composites and automotive electronics modules. Its spacious interior allows for unobstructed placement of ISO-standard stability racks, environmental monitoring probes (e.g., calibrated thermistors, capacitive RH sensors), and reference standards. The chamber meets design criteria for Good Laboratory Practice (GLP) and Good Manufacturing Practice (GMP) environments, supporting 21 CFR Part 11-compliant electronic records when paired with validated data acquisition software. All thermal and humidity performance specifications are traceable to NIST-certified instrumentation and documented per IQ/OQ/PQ protocols. Optional chart recorder interfaces and dry-air purge systems further extend suitability for moisture-sensitive applications such as lithium-ion battery cell aging or hygroscopic excipient stability studies.

Software & Data Management

The Watlow F4T controller’s embedded INTUITION™ platform provides native data logging with timestamped temperature and humidity values stored internally on non-volatile memory. Trend visualization is accessible directly on the 4.3-inch GUI, while raw CSV exports can be retrieved via USB 2.0 host port or streamed in real time over Ethernet using Modbus TCP registers. For enterprise integration, optional OPC UA gateway modules enable seamless connection to LIMS, MES, or SCADA platforms. Audit trail functionality—including user login history, parameter change logs, and alarm event timestamps—is configurable to align with FDA 21 CFR Part 11 requirements. Firmware updates are performed offline via SD card, ensuring version control and regulatory traceability.

Applications

• ICH Q1A(R3) long-term and accelerated stability testing of drug products and biologics at defined conditions (e.g., 25°C/60% RH, 30°C/65% RH, 40°C/75% RH).
• Thermal aging of elastomers, adhesives, and thermoplastics per ASTM D573 and ISO 188.
• High-temperature endurance validation of printed circuit boards (PCBs), connectors, and encapsulated sensors.
• Accelerated life testing of consumer electronics enclosures under combined thermal and humidity stress.
• Reference chamber qualification for secondary environmental monitoring networks in regulated facilities.

FAQ

What is the maximum allowable operating temperature for the Lunaire SS chamber?
The chamber is rated for continuous operation up to +180°C, with short-term excursions permitted to +200°C under engineering supervision.
Does the Lunaire SS support humidity control out of the box?
Humidity capability is optional and requires specification of the Vapor-Flo V system at time of order; base models operate as dry-heat aging chambers only.
How is temperature uniformity validated across the working volume?
Uniformity is verified per ASTM E744 using a minimum of nine calibrated PT100 sensors placed at standardized locations (center, six face centers, and two corners); results are documented in the factory OQ report.
Can the controller interface with external PLCs or building management systems?
Yes—the Watlow F4T supports Modbus TCP and optional analog I/O modules, enabling bidirectional communication with third-party automation infrastructure.
Is the chamber suitable for use in cleanroom environments?
While not ISO Class-certified, the Lunaire SS features electrostatic-dissipative interior finishes, zero-oil compressor lubrication, and optional HEPA-filtered air intake—making it compatible with ISO 14644-1 Class 7–8 support areas.