Zhicheng ZXRD-7080 Advanced Forced-Air Constant-Temperature Oven

Overview

The Zhicheng ZXRD-7080 Advanced Forced-Air Constant-Temperature Oven is an engineered solution for precise, reproducible dry-heat processing in research and quality control laboratories. Designed around the principles of convective thermal transfer and microprocessor-regulated thermodynamic stability, this oven delivers consistent temperature distribution across its 80 L chamber—critical for applications requiring validated thermal exposure, including moisture removal, thermal sterilization, residual solvent evaporation, and pre-conditioning of samples prior to analytical testing. Unlike natural-convection ovens, the ZXRD-7080 employs rear-mounted horizontal forced-air circulation, ensuring uniform airflow across all shelf positions and minimizing thermal stratification. Its operational envelope spans from ambient +5°C up to 300°C, with a resolution of 0.1°C and certified fluctuation ≤±1°C under steady-state conditions—meeting baseline requirements for ISO 17025-compliant calibration environments and GLP-aligned experimental protocols.

Key Features

• Triple-layer thermal safety architecture: independent over-temperature detection, audible/visual alarm activation, automatic heater disconnection, and intelligent auto-resumption upon power recovery
• High-fidelity temperature control system integrating a fast-response PT100 sensor array with an environmental-scan microprocessor chip for real-time adaptive compensation
• Optimized air duct geometry and low-turbulence blower design enabling laminar airflow distribution—validated via ASTM E2875-22 thermal mapping procedures
• Electropolished stainless-steel shelving and mirror-finish interior surfaces minimize particle retention and support routine cleaning validation per USP guidelines
• Digital temperature offset calibration function allows traceable adjustment of displayed vs. measured values without external hardware
• LED interface with dual-parameter display (setpoint & actual temperature), integrated timer (1 min – 99 h 59 min), and elapsed time tracking
• Energy-efficient plate-type heating elements distributed across the chamber base and rear wall ensure rapid thermal equilibration and spatial homogeneity ≤±2.5% at maximum setpoint

Sample Compatibility & Compliance

The ZXRD-7080 accommodates standard laboratory glassware (e.g., Petri dishes, weighing boats, crucibles, aluminum pans) and polymer-based containers rated for continuous exposure up to 300°C. Its sealed tempered-glass door maintains chamber integrity during operation while permitting visual monitoring without thermal disruption. The unit complies with IEC 61010-1:2010 safety standards for electrical equipment used in laboratory environments and incorporates grounding continuity, insulation resistance, and leakage current safeguards verified per EN 61326-1. While not certified as a medical device under FDA 21 CFR Part 820, its thermal performance characteristics align with sterilization process development requirements outlined in ISO 11138-4 (dry-heat sterilization) and AAMI ST46:2020. Routine verification can be performed using NIST-traceable Class A RTDs or calibrated data loggers compliant with ISO/IEC 17025.

Software & Data Management

The ZXRD-7080 operates as a standalone instrument with embedded firmware—no external software dependency. All operational parameters (setpoint, runtime, alarm history, calibration offsets) are retained in non-volatile memory with battery-backed retention, supporting audit-ready documentation per GLP Annex 11 and FDA 21 CFR Part 11 principles when paired with controlled procedural documentation. Optional RS-485 serial output (available on request) enables integration into centralized lab monitoring systems for time-stamped temperature logging, remote status polling, and event-triggered alerts—compatible with LabArchives ELN, Thermo Fisher SampleManager, or custom SCADA platforms via Modbus RTU protocol.

Applications

This oven serves core functions across regulated and academic life science workflows: gravimetric moisture content analysis (AOAC 950.46, ASTM D2231), ash residue determination (USP ), pre-drying of HPLC vials and GC sample tubes, depyrogenation of glassware (≥250°C for ≥30 min), thermal validation of packaging materials, stability testing of excipients, and preparation of dried reference standards. In environmental labs, it supports EPA Method 350.1 (total solids) and ISO 11465 (soil moisture). Its stable high-temperature capability also supports catalyst activation, polymer curing studies, and ceramic sintering pre-treatment in materials science contexts.

FAQ

What is the recommended validation frequency for the ZXRD-7080?
Annual thermocouple-based temperature mapping (per ISO/IEC 17025 Section 6.4.9) is advised; additional quarterly point checks using calibrated reference sensors are recommended for GxP environments.
Can the ZXRD-7080 be used for sterilization of surgical instruments?
No—it is not designed or validated as a medical-grade sterilizer; dry-heat sterilization of critical devices requires dedicated Class B or Class S autoclaves or ISO 17665-compliant dry-heat cabinets.
Is the internal chamber volume fully usable with all four shelves installed?
Yes—the airflow design ensures uniformity across all shelf levels; however, loading density should remain ≤70% of total volume to maintain specified temperature uniformity.
Does the unit include a certificate of conformance or factory calibration report?
A manufacturer’s CoC is supplied standard; optional NIST-traceable calibration certification (including as-found/as-left data) is available upon request at time of order.
How is temperature uniformity verified during installation qualification (IQ)?
Using nine-point thermal mapping (center + eight corners) with calibrated Class A RTDs per ASTM E2875-22, conducted at three temperatures: 60°C, 120°C, and 250°C.