Nabertherm N 30/45H Air-Circulating Laboratory Oven
| Origin | Germany |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | N 30/45H |
| Instrument Type | Box-Type Muffle Furnace |
| Max. Operating Temperature | 450 °C |
| Temperature Uniformity | ±3 K (within working chamber, per DIN 17052-1) |
| Control Accuracy | ±1 °C |
| Max. Power Consumption | 9 kW |
| Heating Rate to Max. Temp. | ≤30 min |
| Heating Element | Resistance Wire (NiCr Alloy) |
| Internal Chamber Volume Options | 5–500 L |
| Construction | Stainless Steel Inner Chamber (AISI 304), Reinforced Insulation, Horizontal Air Circulation System |
| Compliance | DIN 17052-1, EN 61000-6-3, EN 61000-6-4 |
Overview
The Nabertherm N 30/45H is a precision-engineered air-circulating laboratory oven designed for reproducible thermal processing in research, quality control, and industrial R&D environments. Unlike static convection ovens, this model employs a horizontally directed forced-air circulation system—driven by a robust, temperature-resistant centrifugal fan—to ensure uniform heat distribution across the entire working chamber. The furnace operates on resistive heating via high-stability NiCr alloy wire elements embedded within thermally insulated side walls, enabling stable operation up to 450 °C. Its design complies with DIN 17052-1 for temperature uniformity validation, achieving a maximum deviation of ±3 K (ΔT₆K) within the usable volume under steady-state conditions. This performance makes it suitable for applications demanding strict thermal homogeneity—such as polymer aging, moisture removal from hygroscopic samples, preheating of metallurgical specimens, and controlled cooling cycles in heat treatment protocols.
Key Features
- Horizontal forced-air circulation architecture ensures optimal temperature homogeneity (±3 K) across the full chamber volume, validated per DIN 17052-1
- Stainless steel inner chamber (AISI 304) with reinforced ceramic fiber insulation for thermal efficiency and long-term structural integrity
- Programmable digital controller with PID regulation, ramp-soak functionality, and real-time temperature logging capability
- Standard inclusion of one adjustable stainless steel shelf; additional shelves available as accessories for multi-layer sample loading
- Robust mechanical construction rated for continuous operation under ISO 9001-certified manufacturing standards
- Optional dust-free chamber configuration available for cleanroom-compatible applications (e.g., semiconductor substrate conditioning or pharmaceutical excipient drying)
Sample Compatibility & Compliance
The N 30/45H accommodates a broad range of sample types—including metal alloys, ceramics, polymers, composites, and powder metallurgy compacts—without risk of cross-contamination due to its sealed, non-reactive chamber environment. It supports standardized thermal processes aligned with ASTM E145 (Standard Specification for Gravity-Convection and Forced-Ventilation Ovens), ISO 2812-3 (paint drying evaluation), and USP (sterile product depyrogenation validation). For regulated laboratories, optional controller configurations support audit-trail-enabled data recording compliant with FDA 21 CFR Part 11 requirements when integrated with Nabertherm’s THERMOCOM software suite.
Software & Data Management
When paired with Nabertherm’s THERMOCOM PC interface software (optional), the N 30/45H enables remote parameter configuration, real-time temperature graphing, and automated report generation in PDF or CSV format. All temperature setpoints, ramps, holds, and deviations are timestamped and stored with user ID attribution—meeting GLP/GMP documentation expectations. Data export supports traceability across multiple batches and aligns with internal SOPs requiring electronic records retention for ≥15 years.
Applications
- Accelerated aging studies of elastomers and thermoplastics per ISO 188 and ASTM D573
- Drying of analytical reference standards and calibration materials under controlled humidity-depleted conditions
- Preheating of crucibles and sample holders prior to TGA or DSC analysis
- Tempering and stress-relief treatments for machined components in metrology labs
- Moisture content determination in pharmaceutical raw materials (ICH Q5C guidelines)
- Conditioning of sensor substrates and MEMS devices prior to thin-film deposition
FAQ
What is the difference between an air-circulating oven and a standard convection oven?
Air-circulating ovens use a mechanically driven fan to enforce horizontal airflow across the chamber, resulting in significantly improved temperature uniformity (±3 K) compared to natural-convection units (±10 K or worse). This is critical for process-critical applications such as aging or drying where spatial thermal gradients induce variability.
Can the N 30/45H be used for annealing metallic samples?
Yes—its precise temperature control (±1 °C), uniformity (±3 K), and programmable ramp/soak profiles make it suitable for low-to-medium temperature annealing of copper, aluminum, and stainless steel alloys below 450 °C.
Is calibration documentation provided with the instrument?
Each unit ships with a factory calibration certificate traceable to PTB (Physikalisch-Technische Bundesanstalt), including verification points at 100 °C, 250 °C, and 450 °C. On-site recalibration services are available through authorized Nabertherm service partners.
Does the oven support inert atmosphere operation?
The standard N 30/45H is not gas-tight; however, optional flanged inlet/outlet ports and gas purge kits are available for nitrogen or argon purging during sensitive oxidation-prone processes.
How is safety ensured during extended unattended operation?
The oven integrates dual independent overtemperature protection circuits (mechanical and electronic), door-open interlock shutdown, and automatic power cutoff upon thermal runaway detection—fully compliant with EN 61000-6-4 electromagnetic immunity standards.
