LabCompanion HD-138 High-Temperature Forced-Air Oven

Overview

The LabCompanion HD-138 High-Temperature Forced-Air Oven is an industrial-grade thermal processing chamber engineered for precision drying, baking, heat treatment, sterilization, and accelerated aging applications in R&D laboratories and production environments. Designed around a robust convection principle—employing dual-channel horizontal airflow—the oven ensures uniform thermal distribution across the entire 225 L working volume (750 × 600 × 500 mm). Its operational range extends from ambient +10 °C up to 250 °C, supporting standardized thermal protocols required in material stability testing, polymer curing, pharmaceutical residual solvent removal, and electronic component preconditioning. The chamber’s structural integrity derives from a double-wall architecture: an outer shell of ≥1.5 mm SECC cold-rolled steel with electrostatic powder coating, and an inner liner fabricated from ≥1.2 mm SUS430 stainless steel—resistant to oxidation and thermal fatigue under prolonged high-temperature exposure. Thermal insulation consists of 80 mm thick glass wool, minimizing surface temperature rise and energy loss while maintaining Class II thermal efficiency per ISO 8502-2.

Key Features

• Forced-air convection system with dual independent air ducts and horizontally oriented airflow—optimized to minimize vertical temperature gradients and achieve ≤±1.6% uniformity at 250 °C.
• Digital PID temperature controller with Pt100 RTD sensing element, offering ±0.5 °C control accuracy and intuitive LED interface with keypad input for setpoint and timer configuration.
• Bottom-mounted stainless steel tubular heating elements integrated into the chamber floor—ensuring stable thermal ramping and long service life without radiant hot spots.
• Programmable timer (0.01–99.99 hours) with automatic heating termination and audible alert, supporting unattended operation in GLP-compliant workflows.
• Comprehensive electrical safety architecture including short-circuit protection, overcurrent tripping, motor thermal overload detection, and three-phase monitoring (where applicable).
• Standard inclusion of two adjustable stainless steel wire shelves—compatible with standard laboratory trays, crucibles, and sample racks.

Sample Compatibility & Compliance

The HD-138 accommodates a broad spectrum of sample formats—including petri dishes, metal trays, ceramic crucibles, PCB assemblies, polymer films, and pharmaceutical blister packs—without compromising thermal homogeneity or airflow dynamics. Its construction adheres to IEC 61000-6-3 (EMC emissions) and IEC 61000-6-2 (immunity) standards. While not certified for explosion-proof use, the oven meets general-purpose safety requirements outlined in UL 61010-1 and EN 61010-1 for laboratory electrical equipment. It supports method validation under ASTM D5422 (thermal aging of plastics), ISO 188 (rubber—accelerated aging), and USP (sterilization by dry heat), particularly where dwell times exceed 30 minutes at ≥160 °C. Optional calibration documentation (NIST-traceable) and IQ/OQ support packages are available for regulated environments requiring FDA 21 CFR Part 11–compliant audit trails.

Software & Data Management

The HD-138 operates as a standalone instrument with embedded firmware; no external PC software is required for basic operation. However, optional RS-485 serial interface (Modbus RTU protocol) enables integration into centralized facility monitoring systems for real-time temperature logging, remote setpoint adjustment, and event-triggered alerts. When paired with LabCompanion’s optional data acquisition module, users can generate time-stamped CSV reports compliant with ALCOA+ principles—supporting traceability, integrity, and long-term archival for GMP audits. All parameter changes, timer initiations, and alarm events are internally logged with timestamps, satisfying minimum GLP record-keeping expectations.

Applications

• Accelerated thermal aging of polymers, elastomers, and composites per ISO 2578 and ASTM D3045.
• Drying of moisture-sensitive powders, granules, and lyophilized APIs prior to packaging or analytical testing.
• Pre-baking of printed circuit boards and semiconductor substrates to eliminate outgassing contaminants.
• Heat sterilization of glassware, stainless steel tools, and non-porous instruments at ≥160 °C for ≥2 hours (validated per USP ).
• Thermal stress screening of electronic components under JEDEC JESD22-A108 conditions.
• Curing of adhesives, coatings, and encapsulants in materials science and microelectronics R&D labs.

FAQ

What is the maximum continuous operating temperature of the HD-138?
The chamber is rated for continuous operation at 250 °C, with thermal stability maintained across the full internal volume per manufacturer validation reports.
Can the oven be used for sterilization of medical devices?
Yes—when operated at ≥160 °C for ≥120 minutes, it meets dry-heat sterilization parameters specified in USP and ISO 17665-1 for non-porous items; validation must be performed per site-specific protocols.
Is the temperature controller compliant with FDA 21 CFR Part 11?
The base unit does not include electronic signature or audit trail functionality; however, optional data logging modules with role-based access control and immutable event logs are available for Part 11 compliance.
Does the HD-138 support ramp-hold programming?
No—this model implements single-setpoint PID control with timer-based dwell only; multi-step thermal profiles require external programmable controllers or upgraded models in the LabCompanion HT-series.
What maintenance is recommended for long-term reliability?
Biannual inspection of door gasket integrity, blower motor lubrication (if applicable), and verification of Pt100 sensor calibration using a reference thermometer is advised; heater resistance checks should accompany annual preventive maintenance.