Labonce Labonce-100GWH High-Temperature Constant-Temperature Test Chamber (300 °C)

Overview

The Labonce Labonce-100GWH High-Temperature Constant-Temperature Test Chamber is an engineered environmental test system designed for precise, repeatable thermal exposure of electrical, electronic, and material specimens under controlled elevated temperature conditions up to 300 °C. It operates on the principle of forced-air convection with a dynamically balanced airflow distribution system, ensuring thermally stable and spatially uniform conditions throughout the working chamber—critical for accelerated aging, thermal endurance evaluation, and qualification testing per international reliability standards. Unlike general-purpose ovens, this chamber integrates metrologically traceable temperature control architecture, dual-stage overtemperature protection, and structural design compliant with GB/T 11158–2008, making it suitable for R&D laboratories, quality assurance departments, and third-party testing facilities requiring regulatory-grade thermal validation.

Key Features

• Forced-air circulation system with optimized duct geometry and rear-mounted centrifugal blower, achieving ≤ ±2.0 °C temperature uniformity across the 100 L working volume at temperatures up to 200 °C, and ≤ ±3.0 °C uniformity within the extended 200–300 °C operating band.
• Dual independent temperature monitoring: primary PID-controlled heating loop paired with a physically isolated mechanical overtemperature cutoff switch, preventing thermal runaway and safeguarding both test specimens and chamber integrity.
• Robust dual-wall construction: exterior cold-rolled steel housing with epoxy-polyester powder coating; interior chamber lined with 1.2 mm thick SUS304 stainless steel for corrosion resistance, thermal stability, and ease of cleaning.
• Two controller configurations available: (1) Industrial-grade digital display controller (GW) for basic setpoint operation, or (2) Programmable 7-inch color touchscreen controller (GW-T) supporting multi-step temperature profiles, real-time data logging, password-protected three-tier user access (Operator/Engineer/Administrator), and FDA 21 CFR Part 11-compliant audit trail functionality.
• Energy-efficient heating system utilizing high-density nickel-chromium alloy heating elements with segmented power distribution, minimizing thermal inertia and improving response time during ramp-and-soak cycles.

Sample Compatibility & Compliance

The Labonce-100GWH accommodates standard-sized PCB assemblies, polymer samples (films, molded parts), battery cells, automotive connectors, and passive electronic components without dimensional interference. Its internal cavity dimensions (450 × 450 × 450 mm) allow unobstructed airflow around vertically oriented test fixtures. The chamber meets the structural, performance, and verification requirements specified in GB/T 11158–2008 “Technical Requirements for High-Temperature Test Chambers.” While not certified to IEC 60068-2-2 or MIL-STD-810H out-of-the-box, its documented temperature stability, uniformity, and repeatability enable users to validate compliance through in-house IQ/OQ protocols aligned with ISO/IEC 17025 and GLP practices. Calibration certificates traceable to CNAS-accredited laboratories are available upon request.

Software & Data Management

The GW-T controller firmware supports CSV export of time-stamped temperature logs (sampling interval configurable from 1 to 60 seconds), profile storage for up to 100 multi-segment programs, and USB-based firmware updates. All user actions—including parameter changes, profile execution starts/stops, and alarm acknowledgments—are recorded with timestamps, operator ID, and contextual metadata in an immutable audit log. Data integrity is preserved via write-protected memory architecture and automatic backup on controller power-down. Optional RS485 Modbus RTU or Ethernet TCP/IP interface enables integration into centralized MES or LIMS platforms for automated data ingestion and long-term trend analysis.

Applications

• Thermal endurance testing of insulating materials per IEC 60216 and UL 746B.
• High-temperature aging of lithium-ion battery modules to assess capacity fade and impedance growth.
• Pre-conditioning of adhesives, sealants, and encapsulants prior to peel strength or shear testing.
• Stress screening of automotive ECUs and sensor housings under sustained 150–250 °C exposure.
• Validation of solder paste reflow profiles and post-reflow component reliability.
• Material decomposition onset studies using TGA cross-correlation with isothermal hold data.

FAQ

What is the maximum continuous operating temperature of the Labonce-100GWH?

The chamber is rated for continuous operation from ambient +20 °C up to 300 °C, with thermal stability maintained per GB/T 11158–2008 specifications.
Does the unit support ramp-hold-soak temperature profiles?

Yes—only when equipped with the GW-T programmable touchscreen controller, which supports up to 99 segments per program and real-time deviation alarms.
Is the internal chamber volume verified and calibrated?

Volume is dimensionally calculated per ISO 17025 guidelines; volumetric calibration reports with uncertainty budgets are available as an add-on service.
Can external sensors be connected for multi-point chamber mapping?

The GW-T controller provides two auxiliary PT100 input channels for optional external probe integration, enabling in-situ temperature mapping per ASTM E2202.
What safety certifications does the Labonce-100GWH carry?

The unit conforms to GB 4793.1 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) and includes CE-marked power components; full CE/UL certification requires site-specific risk assessment and configuration review.