Thermotron S/SM-1.2 Temperature-Only Environmental Test Chamber

Overview

The Thermotron S/SM-1.2 is a compact, high-performance benchtop environmental test chamber engineered for precise, rapid, and repeatable temperature-only conditioning of materials, components, and subassemblies. Unlike hybrid temperature-humidity chambers, the S/SM-1.2 is purpose-built as a dedicated thermal cycling system—eliminating humidity control hardware to maximize thermal efficiency, stability, and ramp fidelity. Its operational principle relies on dual hermetic refrigeration compressors coupled with a high-efficiency forced-air convection system and precision PID-controlled resistive heating. This architecture enables a verified ramp rate of ≥3 °C/min across its full operating span of –73 °C to +180 °C—a performance benchmark uncommon in similarly sized benchtop platforms. With an internal volume of 34 L and external footprint of just 0.41 m², the S/SM-1.2 delivers laboratory-grade thermal stress capability without requiring floor-standing infrastructure. It is widely deployed in R&D labs, quality assurance departments, and pilot manufacturing lines where space-constrained validation of thermal endurance, cold shock resistance, solder reflow simulation, and accelerated aging is required under ISO 17025–aligned conditions.

Key Features

• Dual hermetic compressor system (0.33 HP each) for enhanced cooling capacity, extended service life, and reduced oil carryover risk
• Forced-air convection with calibrated airflow distribution ensures uniform temperature distribution (±1.5 °C typical across load zone per ASTM E145 Annex A)
• Precision digital PID controller with real-time deviation monitoring and programmable soak/ramp profiles (up to 99 segments)
• Robust stainless-steel interior (304 grade) and insulated double-wall construction with low-thermal-conductivity polyurethane foam (35 mm thickness)
• Large observation window (150 × 200 mm) with low-E double-glazed tempered glass for visual sample monitoring without thermal leakage
• Integrated overtemperature and overpressure safety interlocks compliant with UL 3101-1 and IEC 61010-1
• Benchtop form factor (750 × 550 × 1020 mm) designed for integration into fume hoods, glove boxes, or modular lab benches

Sample Compatibility & Compliance

The S/SM-1.2 accommodates standard test specimens up to 300 mm in height and 280 mm in depth, including PCB assemblies, polymer coupons, battery cells, medical device housings, and optical components. Its absence of humidification components eliminates condensation-related artifacts, making it ideal for tests governed by IPC-TM-650 2.6.7 (thermal shock), MIL-STD-810H Method 502.7 (low temperature), and Method 501.7 (high temperature). The chamber meets electromagnetic compatibility requirements per CISPR 11 Group 1 Class B and supports GLP-compliant operation when paired with validated external data loggers. While not certified to IEC 60068-2 series out-of-the-box, its thermal performance profile aligns with Clause 2.1 (temperature change rate) and Clause 2.2 (temperature stabilization) of IEC 60068-2-14 when operated within defined load and calibration boundaries.

Software & Data Management

The S/SM-1.2 operates via a front-panel touchscreen HMI with embedded firmware supporting up to 100 stored test programs and event-triggered logging (ramp start/end, deviation alarms, power interruption). Optional Ethernet or RS-485 interface enables integration with SCADA systems or centralized lab management platforms (e.g., LabWare LIMS, Siemens Desigo CC). Raw temperature data is timestamped and exportable in CSV format; audit trails—including user ID, parameter changes, and alarm history—are retained for ≥30 days. When configured with third-party 21 CFR Part 11–compliant software (e.g., WinTest Pro v5.2+), the system supports electronic signatures, role-based access control, and immutable record archiving—meeting FDA-regulated QC lab documentation requirements.

Applications

• Thermal cycling qualification of automotive electronics per AEC-Q200 Rev D
• Cold storage validation for pharmaceutical packaging per USP
• High-temperature bake-out of MEMS sensors and thin-film devices
• Material coefficient of thermal expansion (CTE) screening using dimensional metrology post-exposure
• Pre-conditioning of adhesives and encapsulants prior to shear strength testing (ASTM D1002)
• Reliability stress screening for aerospace avionics per RTCA DO-160 Section 4.3

FAQ

Does the S/SM-1.2 support humidity control?

No—the S/SM-1.2 is a temperature-only chamber. Humidity functionality is excluded by design to optimize thermal performance, reliability, and maintenance intervals.
Is calibration traceability available?

Yes—Thermotron provides NIST-traceable calibration certificates (optional at time of order) covering temperature uniformity, stability, and ramp verification per ISO/IEC 17025 accredited procedures.
Can the chamber operate continuously at –73 °C?

Yes, with proper ventilation and ambient room temperature maintained between 15–30 °C; continuous operation at extreme low temperatures requires periodic defrost cycle management, which is automated in firmware v3.2+.
What safety certifications does it hold?

UL 3101-1 (Electrical Equipment for Laboratory Use), IEC 61010-1 (Safety Requirements for Electrical Equipment), and CE marking per EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU.
Is remote monitoring supported out of the box?

Basic remote status readout (setpoint, actual temp, alarm state) is enabled via Modbus RTU over RS-485; full remote control and data streaming require optional Ethernet gateway module and licensed software license.