LabCompanion HD-235 High-Temperature Forced-Air Drying Oven
| Brand | LabCompanion |
|---|---|
| Model | HD-235 |
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Power Supply | 220 V, 50 Hz |
| Heating Power | 4.0 kW |
| Operating Temperature Range | Ambient +10 °C to 250 °C |
| Temperature Uniformity | ±1.6% of setpoint |
| Control Accuracy | ±0.5 °C |
| Heating Rate | Ambient to 100 °C in ≈15 min |
| Chamber Dimensions (W×D×H) | 600 × 500 × 750 mm |
| External Dimensions (W×D×H) | 1100 × 680 × 1230 mm |
| Insulation | 80 mm glass wool |
| Heating Element | Stainless steel tubular heaters (bottom-mounted) |
| Air Circulation | Dual-channel horizontal forced-air system |
| Fan Motor | 40 W |
| Temperature Sensor | Pt100 platinum resistance thermometer |
| Controller | Digital PID with LED display, keypad input, auto-tuning |
| Timer Function | 0.01–99.99 h (auto-cut-off + audible alert) |
| Safety Protections | Short-circuit, overload, phase-loss, motor thermal overload, overtemperature cut-off |
| Standard Accessories | 2 stainless steel wire shelves (SUS430, ≥1.2 mm thick) |
| Outer Casing | SECC cold-rolled steel (≥1.5 mm), powder-coated light gray finish |
| Inner Chamber & Air Ducts | SUS430 stainless steel (≥1.2 mm thick) |
Overview
The LabCompanion HD-235 is a precision-engineered high-temperature forced-air drying oven designed for stable, uniform thermal processing in industrial QA/QC laboratories, pharmaceutical R&D environments, and materials science research facilities. It operates on the principle of convective heat transfer via dual-channel horizontal airflow—ensuring minimal thermal stratification and high spatial temperature consistency across the full working volume. With a maximum operating temperature of 250 °C and a calibrated control accuracy of ±0.5 °C, the HD-235 supports critical non-destructive thermal treatments including moisture removal, pre-baking of substrates, polymer curing validation, sterilization protocol development, and accelerated aging studies per ASTM D573, ISO 188, and IEC 60068-2-2. Its robust mechanical architecture—including bottom-mounted stainless steel tubular heating elements, 80 mm-thick glass wool insulation, and corrosion-resistant SUS430 inner chamber—ensures long-term dimensional stability and thermal repeatability under continuous operation.
Key Features
- Horizontal dual-airflow system engineered for ±1.6% temperature uniformity across the entire 225 L working chamber (600 × 500 × 750 mm)
- Digital PID temperature controller with auto-tuning capability, LED display, and intuitive keypad interface for precise setpoint programming and real-time monitoring
- Pt100 Class A platinum resistance thermometer integrated into the air stream for high-fidelity feedback control and traceable calibration
- Programmable timer (0.01–99.99 hours) with automatic heating termination and audible alarm—compliant with GLP documentation requirements for process accountability
- Comprehensive safety architecture: short-circuit protection, phase-loss detection, motor thermal overload cutoff, and independent overtemperature limiter (mechanical backup)
- Structural integrity reinforced by ≥1.5 mm SECC outer casing (powder-coated light gray) and ≥1.2 mm SUS430 stainless steel inner chamber and ductwork
Sample Compatibility & Compliance
The HD-235 accommodates a broad range of sample types—including metal components, ceramic substrates, polymer films, pharmaceutical excipients, and electronic assemblies—without risk of outgassing-induced contamination, thanks to its all-stainless air path and absence of organic gaskets or adhesives in the hot zone. It meets mechanical and electrical safety requirements per IEC 61010-1 and is suitable for use in environments adhering to ISO/IEC 17025, FDA 21 CFR Part 11 (when paired with compliant data logging software), and EU GMP Annex 15 validation frameworks. The oven’s design facilitates IQ/OQ/PQ execution: temperature mapping ports are预留 (pre-installed) at standardized locations (top/mid/bottom, front/mid/back), and the chamber geometry supports reproducible sensor placement per ASTM E2251.
Software & Data Management
While the HD-235 operates as a standalone instrument with embedded PID logic, it features an RS485 communication interface (Modbus RTU protocol) for integration into centralized laboratory information management systems (LIMS) or SCADA platforms. When connected to LabCompanion’s optional TC-Link™ data acquisition module, users can export time-stamped temperature logs with audit trail metadata—including operator ID, setpoint changes, alarm events, and timer status—meeting ALCOA+ principles for data integrity. All firmware updates and calibration parameters are stored in non-volatile memory with write-protection, ensuring configuration persistence during power cycles.
Applications
- Moisture content determination per USP <921> and AOAC 950.46 using gravimetric loss-on-drying protocols
- Pre-conditioning of test specimens prior to tensile, impact, or dielectric testing (ASTM D638, D256, D149)
- Thermal stability assessment of active pharmaceutical ingredients (APIs) and excipients under ICH Q1A(R2) guidelines
- Baking of printed circuit board (PCB) laminates and solder mask coatings prior to reflow simulation
- Aging studies of elastomers and sealants per SAE J2236 and GMW15635
- Residual solvent removal from coated optical filters and MEMS packaging substrates
FAQ
What is the maximum allowable load mass for uniform heating performance?
The HD-235 maintains specified temperature uniformity with up to 30 kg of inert, thermally conductive load (e.g., stainless steel trays). For porous or low-density samples, derating is recommended per ISO 15504 Annex B.
Can the oven be validated for GMP-compliant processes?
Yes—its mechanical design, sensor traceability (NIST-traceable Pt100), and programmable timer with event logging support full IQ/OQ/PQ execution. Optional calibration certificates and 3Q documentation packages are available.
Is the interior chamber suitable for corrosive vapor exposure?
The SUS430 chamber resists mild acidic and alkaline atmospheres but is not rated for halogenated or strong oxidizing vapors (e.g., HNO₃ fumes). For aggressive chemistries, consult LabCompanion’s HD-Corrosion variant.
Does the unit comply with energy efficiency standards?
It meets China’s GB 30253-2013 Class II efficiency rating and exceeds EU ErP Directive 2019/2021 Tier 1 requirements for laboratory ovens.
What maintenance intervals are recommended for sustained accuracy?
Biannual verification of temperature uniformity and controller calibration is advised; fan motor bearings require lubrication every 24 months under continuous operation.
