Memmert UFE400 Forced-Convection Drying Oven
| Origin | Germany |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | UFE400 |
| Pricing | Upon Request |
Overview
The Memmert UFE400 is a precision-engineered forced-convection drying oven designed for demanding laboratory and industrial applications requiring high thermal uniformity, long-term stability, and traceable process control. Built upon Memmert’s decades-long heritage in climate-controlled instrumentation, the UFE400 employs a robust convection system with adjustable fan speed and manually regulated fresh-air inlet to ensure reproducible heat transfer across the entire chamber volume. Its measurement principle relies on dual 4-wire Pt100 Class A sensors—redundantly configured for fault-tolerant operation—and a microprocessor-based temperature controller integrating fuzzy logic, auto-diagnostic routines, and three-tier overtemperature protection (TB Class 1, TWW Class 3.1, TWB Class 2). The oven operates within a validated temperature range of ambient +5 °C (minimum 30 °C) to 220 °C standard, extendable to 300 °C upon specification, meeting fundamental requirements for drying, conditioning, aging, and pre-heating protocols under ISO 17025, ASTM E145, and DIN 12880 standards.
Key Features
- Chamber constructed entirely from 100% recyclable, corrosion-resistant stainless steel (1.4301 / ASTM 304), deep-drawn without spot welding—ensuring structural integrity and cleanability.
- Forced-air circulation system with continuously adjustable fan speed (10–100% in 10% increments) and manual fresh-air damper for precise atmosphere management.
- E-Class (Excellence) control system featuring multi-point PID regulation, 3-point automatic temperature calibration, and real-time thermal drift compensation.
- Dual independent 4-wire Pt100 Class A temperature sensors with redundant monitoring and fail-safe heating cutoff logic.
- Integrated data logger with 1024 kB circular memory; records setpoints, actual values, alarms, timestamps, and error codes at 1-minute intervals—supporting >6 months of continuous logging.
- Comprehensive overtemperature protection architecture: mechanical safety limiter (TB), electronic backup limiter (±10 °C above setpoint for U/S variant), and microprocessor-based active monitoring with self-diagnostic Pt100 validation.
- RS232 interface and bundled Celsius 2007 software for remote configuration, unlimited ramp-soak programming, and audit-ready data export compliant with FDA 21 CFR Part 11 requirements (when used with appropriate user access controls and electronic signature modules).
Sample Compatibility & Compliance
The UFE400 accommodates diverse sample types—including powders, granules, polymer films, pharmaceutical excipients, and coated substrates—within its 53 L stainless-steel chamber (400 × 400 × 330 mm internal dimensions). Four sliding stainless-steel shelves (max. 30 kg per shelf, 90 kg total load capacity) support flexible loading configurations. Chamber uniformity complies with DIN 12880: ≤±2.2 °C at 150 °C (U/S variant) and ≤±0.6 °C at 37 °C (I variant), verified via single-point calibration certificate issued at center location (160 °C for U/S, 37 °C for I). All electrical components conform to IEC 61010-1 for laboratory equipment safety. The unit is CE-marked and meets EMC Directive 2014/30/EU. Optional STERI card enables automated 160 °C sterilization cycles for incubator-compatible use cases.
Software & Data Management
Celsius 2007 software—validated for Windows NT4 through Windows 10—provides full bidirectional communication with the UFE400. Users may define complex multi-segment thermal profiles (unlimited ramps, soaks, cooling phases), assign time-based events (e.g., fan modulation, damper positioning), and schedule weekly programs (Mon–Fri, Sat–Sun, or custom day sets). Data export supports CSV, PDF, and XML formats with embedded metadata (operator ID, instrument serial number, calibration status). Audit trail functionality logs all parameter changes, user logins, and alarm acknowledgments—essential for GLP/GMP environments. Optional USB-to-RS232 adapters enable compatibility with modern workstations; parallel printer port supports PCL3-compatible inkjet printers for hard-copy record generation.
Applications
- Moisture content determination per ISO 5519 and AOAC 950.46 protocols.
- Thermal aging studies of polymers, adhesives, and composites (ASTM D3045, ISO 2578).
- Pre-conditioning of test specimens prior to tensile, impact, or electrical testing (ISO 291, ASTM D618).
- Drying of filter papers, crucibles, and glassware in analytical chemistry workflows.
- Stability testing of APIs and finished dosage forms under ICH Q1A(R2) guidelines.
- Controlled evaporation of solvents from thin-film coatings and nanomaterial dispersions.
FAQ
What is the maximum operating temperature of the UFE400?
The standard UFE400 model operates up to 220 °C; a high-temperature version is available with extended capability to 300 °C.
Does the UFE400 include factory calibration documentation?
Yes—each unit ships with a single-point calibration certificate for the chamber center at either 160 °C (U/S) or 37 °C (I), traceable to national standards.
Can the UFE400 be integrated into a LIMS or MES environment?
Via RS232 and Celsius 2007, the oven supports structured data export (CSV/XML) and timestamped event logging compatible with common laboratory informatics platforms.
Is the internal chamber volume verified per ISO 17025 requirements?
Chamber volume is specified as approximately 53 L based on nominal internal dimensions; volumetric verification is not performed by default but can be added as an optional service.
What power supply specifications are required?
The UFE400 requires 230 V ±10%, 50/60 Hz, with a rated heating load of 1400 W (U/S) or 800 W (I); alternative voltages (e.g., 115 V) are available upon order.
