CZGY DHP-600 Electrically Heated Constant-Temperature Incubator

Overview

The CZGY DHP-600 Electrically Heated Constant-Temperature Incubator is a precision-engineered laboratory incubation system designed for stable, repeatable thermal environments in microbiological culture, cell maintenance, enzyme activity assays, and general biological storage applications. It operates on resistive heating principles coupled with forced-air convection—achieved via an internal axial fan and optimized airflow ducting—to ensure uniform heat distribution across the entire working chamber. Unlike humidity-controlled or CO₂-incorporated incubators, the DHP-600 is purpose-built for dry-heat applications where moisture interference must be avoided (e.g., desiccation-sensitive reagents, dry sterilization validation, or non-aqueous sample conditioning). Its microprocessor-based PID temperature controller delivers high reproducibility under continuous operation, with factory-calibrated sensor offset compensation and configurable control parameters (P, I, D, cycle time) to accommodate diverse thermal load profiles.

Key Features

• Robust structural architecture: 1.2 mm cold-rolled steel outer casing with epoxy-polyester electrostatic powder coating for corrosion resistance and mechanical durability.
• 304 stainless steel interior chamber with seamless, radius-cornered welding—facilitating ISO-compliant cleaning protocols and minimizing microbial harborage points.
• Dual-layer thermal insulation: High-density ultra-fine glass wool (≥80 mm thickness) between chamber walls and outer shell ensures low thermal leakage and minimal ambient heat impact.
• Intelligent digital temperature controller with dual-line LED display: Real-time measurement (upper line) and setpoint entry (lower line), supporting rapid parameter navigation via SET/△/▽ keys.
• Configurable PID tuning: Proportional band (1–200°C), integral time (0–999 s), derivative time (0–999 s), and output cycle period (1–200 s) allow fine-tuning for dynamic load conditions.
• Comprehensive safety logic: Independent over-temperature alarm (AL parameter), hysteresis setting (HY) to suppress relay chatter, and full parameter lock (LCK level 2) to prevent unauthorized configuration changes.
• High-visibility double-glazed observation window with internal lighting—enabling non-intrusive monitoring without thermal disturbance.

Sample Compatibility & Compliance

The DHP-600 accommodates standard-sized Petri dishes (up to 150 mm), multi-well plates (6–96-well), test tubes (13–25 mm OD), and flasks (Erlenmeyer up to 2 L) on up to three adjustable stainless steel shelves (included). Its dry-heat design excludes aqueous condensation risks—making it suitable for ASTM E2500-13 (verification of equipment used in pharmaceutical manufacturing) and USP (sterile processing validation) support activities when paired with qualified thermocouple mapping. While not certified to IEC 61010-1 or EN 61326-1 out-of-the-box, its construction meets general laboratory electrical safety requirements for Class I equipment. No humidity control implies exclusion from ISO 14644-1 cleanroom environmental monitoring—but aligns with ISO 13408-1 (aseptic processing) auxiliary equipment classifications.

Software & Data Management

The DHP-600 operates as a standalone instrument with no embedded data logging or PC interface. All operational parameters—including setpoint, measured temperature, alarm status, and relay duty cycle—are displayed locally in real time. For GLP/GMP traceability, users may integrate external calibrated thermistors (e.g., Fluke 1523/1524) with validated data loggers (e.g., Omega OM-DAQPRO-5300) for 21 CFR Part 11-compliant audit trails. The unit supports manual calibration verification via SC parameter adjustment (±50°C offset range), though permanent calibration records must be maintained separately per ISO/IEC 17025 Clause 6.5.3.

Applications

• Microbial growth studies requiring precise, non-humidified thermal environments (e.g., thermophilic strain propagation, fungal spore germination).
• Enzyme kinetics assays where water vapor could denature catalytic activity or interfere with spectrophotometric endpoints.
• Material stability testing of lyophilized biologics, excipients, or diagnostic reagents per ICH Q1A(R2) guidelines.
• Pre-heating of glassware, metal tools, or ceramic substrates prior to aseptic handling in laminar flow hoods.
• Accelerated aging trials for packaging materials under controlled dry-heat stress (ASTM F1980).
• Support function in QC labs performing sterility test incubation per USP , where humidity-induced false positives must be eliminated.

FAQ

Does the DHP-600 support humidity control?
No. This model is strictly a dry-heat incubator with no integrated humidification or dehumidification system.
What is the maximum shelf loading capacity per tray?
Each stainless steel shelf supports up to 45 kg total distributed load; recommended uniform loading is ≤15 kg per shelf for optimal airflow and thermal uniformity.
Can the temperature sensor be recalibrated in-house?
Yes—the SC parameter allows user-adjustable offset correction (±50°C range), but full NIST-traceable recalibration requires external reference standards and documented procedures per ISO/IEC 17025.
Is the unit compatible with 21 CFR Part 11 compliance workflows?
Not natively. Electronic records and signatures require integration with validated third-party data acquisition systems meeting Part 11 Annex 11 requirements.
What safety certifications does the DHP-600 hold?
It complies with basic CE-marking directives for electromagnetic compatibility (EMC) and low-voltage equipment (LVD); formal certification documentation is available upon request for institutional procurement review.