Jianhu JH-THL Series Benchtop High-Low Temperature Environmental Test Chamber
| Brand | Jianhu |
|---|---|
| Origin | Shanghai, China |
| Model | JH-THL Series |
| Temperature Range | -70 °C to +150 °C |
| Refrigeration | Compressor-based (Cascade System) |
| Explosion-Proof Design | Yes |
| Temperature Fluctuation | ±0.5 °C |
| Temperature Uniformity | ±2.0 °C |
| Temperature Deviation | ±2.0 °C |
| Heating Rate | ≤60 min (from -40 °C to +85 °C) |
| Cooling Rate | ≤45 min / ≤60 min / ≤80 min (depending on configuration and load) |
Overview
The Jianhu JH-THL Series Benchtop High-Low Temperature Environmental Test Chamber is an engineered solution for precise thermal stress evaluation in academic laboratories, R&D centers, and quality assurance environments. Designed around a dual-stage cascade refrigeration system and high-fidelity PID-plus adaptive control architecture, the chamber delivers stable, repeatable thermal profiles across a wide operational range of –70 °C to +150 °C. Its compact benchtop footprint enables integration into constrained lab spaces without compromising performance—making it especially suitable for universities, material science departments, and early-stage product validation labs where space efficiency, safety compliance, and pedagogical clarity are critical.
Key Features
- Explosion-proof certified construction: Fully compliant with IEC 60079-0 and GB 3836.1–2010 standards; intrinsically safe wiring, explosion-resistant viewing window, and pressure-relief venting integrated as standard.
- High-stability thermal control: Achieves ±0.5 °C temperature fluctuation and ±2.0 °C uniformity across the working volume (typically 50–200 L), validated per ISO 16750-4 and ASTM D3418 procedures.
- Optimized airflow dynamics: Computational Fluid Dynamics (CFD)-validated internal ducting and centrifugal circulation fan ensure laminar, low-turbulence air distribution—minimizing thermal stratification and load-induced gradient distortion.
- Cascade refrigeration system: Uses environmentally compliant R449A/R23 refrigerant blends; enables sustained operation at –70 °C with <1.2 kW/h average power draw under steady-state conditions.
- Benchtop ergonomics & safety: Front-access door with magnetic seal, adjustable stainless-steel shelves, overtemperature/overpressure cut-off, and real-time fault logging via embedded controller.
Sample Compatibility & Compliance
The JH-THL series accommodates diverse sample geometries—including PCB assemblies, polymer films, battery pouch cells, optical components, and small mechanical subassemblies—within its standardized inner chamber dimensions (W×D×H: 400 × 400 × 400 mm typical). All models meet essential regulatory benchmarks for laboratory-grade environmental testing: ISO 17025 traceable calibration support, GLP-compliant data integrity (audit trail enabled), and compatibility with FDA 21 CFR Part 11 requirements when paired with optional validated software packages. Structural materials conform to RoHS and REACH directives; insulation uses non-halogenated polyurethane foam with λ ≤ 0.022 W/m·K thermal conductivity.
Software & Data Management
Standard firmware includes a 7-inch capacitive touchscreen HMI with multi-level user access (Operator, Engineer, Administrator), real-time trend plotting, and CSV export of time-stamped temperature logs. Optional PC-based software (Jianhu TestSuite v3.2) provides extended functionality: test sequence scripting (up to 99 segments), remote monitoring via Ethernet/Wi-Fi, automated report generation (PDF/Excel), and electronic signature capability aligned with 21 CFR Part 11 Annex 11 expectations. All data storage adheres to ALCOA+ principles—ensuring Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, and Available records.
Applications
- Thermal cycling qualification of lithium-ion battery modules per UN 38.3 and IEC 62133-2
- Material coefficient of thermal expansion (CTE) characterization in polymer composites and thin-film substrates
- Accelerated aging studies for pharmaceutical packaging under ICH Q1A(R2) guidelines
- Pre-conditioning of optoelectronic sensors prior to photometric calibration
- Curriculum-integrated experiments in undergraduate thermodynamics and reliability engineering courses
- Validation of solder joint integrity in automotive ECUs under JEDEC JESD22-A104 thermal shock protocols
FAQ
What is the standard calibration interval for the JH-THL chamber?
Annual calibration is recommended per ISO/IEC 17025; optional factory-certified calibration certificates (NIST-traceable) are available at time of purchase or during scheduled maintenance.
Can the chamber be integrated into a LabVIEW or Python-based test automation framework?
Yes—RS-485 Modbus RTU and optional Ethernet TCP/IP interfaces support bidirectional communication; full command set documentation and Python SDK are provided upon request.
Is custom chamber volume or port configuration supported?
Custom internal dimensions, cable/port penetrations, and mounting brackets are available under Jianhu’s Engineering Support Program (ESP), subject to minimum order quantity and lead-time confirmation.
Does the explosion-proof version support humidity control?
No—the current JH-THL-EX series is temperature-only; for combined temp/humidity/explosion-proof operation, refer to the JH-THS-EX variant (separate product line).
What documentation is supplied for regulatory submissions?
Standard delivery includes Factory Acceptance Test (FAT) report, IQ/OQ protocol templates, material declarations (RoHS/REACH), and electrical safety certification (CE, CCC). Full validation support packages are available under consultancy agreement.
