Yiheng DHP-9082 Electrically Heated Constant-Temperature Incubator

Overview

The Yiheng DHP-9082 Electrically Heated Constant-Temperature Incubator is a precision-engineered laboratory incubation system designed for reliable, stable, and contamination-controlled cell culture, microbiological growth, and biochemical incubation applications. It operates on resistive heating via embedded electric heating films combined with forced-air convection—ensuring rapid thermal response and high spatial uniformity across its 80 L chamber. The unit employs a microprocessor-controlled fuzzy PID algorithm to maintain temperature stability within ±0.5 °C at setpoints (e.g., 37 °C), with resolution down to 0.1 °C. Its operational range spans from ambient +5 °C to 65 °C, making it suitable for both standard mammalian cell culture and higher-temperature applications such as enzyme activity assays or bacterial enrichment. The chamber’s mirror-finish stainless steel interior resists corrosion, facilitates cleaning, and minimizes particulate retention—critical for GLP-compliant environments.

Key Features

• Fuzzy PID temperature control with real-time adaptive compensation—reducing overshoot and improving settling time during ramp-and-soak cycles.
• Double-glazed observation door with automatic safety interlock: fan circulation and heating cease immediately upon door opening, preventing thermal shock and eliminating temperature overshoot.
• Intelligent variable-speed fan control—dynamically adjusts airflow velocity based on load and setpoint to minimize evaporation from open culture vessels without compromising thermal homogeneity.
• Independent over-temperature protection circuit—hardware-level cutoff activated if internal sensor readings exceed user-defined limits; includes audible and visual alarm (optional).
• Configurable multi-segment programming capability (optional): supports up to 15 segments and 30 steps, each with individually defined temperature setpoints and dwell times (1–99 h 59 min per segment), enabling unattended execution of complex incubation protocols.
• RS485 serial interface (optional) compliant with Modbus RTU protocol—enables integration into centralized lab monitoring systems or SCADA platforms for remote supervision and data logging.

Sample Compatibility & Compliance

The DHP-9082 accommodates standard laboratory sample formats including Petri dishes, multi-well plates (6–96-well), T-flasks (up to 225 cm²), roller bottles, and glass culture tubes—all supported on four adjustable, load-rated stainless steel shelves. Its chamber geometry (500 × 400 × 400 mm) permits flexible rack configuration while maintaining ≥90% usable volume utilization. The optional UV-C germicidal lamp (254 nm) provides periodic decontamination of circulating air and interior surfaces, reducing airborne microbial load in accordance with ISO 14644-1 Class 8 cleanroom practices. While not certified to IEC 61010-1 or UL 61010-1 out-of-the-box, the unit meets essential safety requirements for Class II equipment when installed per manufacturer instructions and used within specified ambient conditions (+5 °C to +35 °C). Documentation supports traceability for internal quality audits under ISO/IEC 17025 and FDA 21 CFR Part 11–aligned electronic record workflows when paired with validated data acquisition software.

Software & Data Management

When equipped with the optional RS485 interface, the DHP-9082 interfaces seamlessly with third-party data acquisition platforms—including LabVIEW, MATLAB, or custom Python-based monitoring scripts—via ASCII command sets. Optional thermal printer support enables hard-copy generation of timestamped temperature logs meeting ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate). Though the onboard controller does not feature built-in audit trail or electronic signature functionality, its parameter change history (setpoint, timer, program activation) is retained in volatile memory and can be exported externally for review during GxP inspections. For full 21 CFR Part 11 compliance, integration with validated LIMS or ELN systems is recommended.

Applications

• Mammalian and insect cell line propagation under controlled CO₂-free conditions.
• Bacterial and fungal cultivation for clinical diagnostics, food safety testing, and environmental monitoring.
• Enzyme kinetics studies requiring precise thermal staging across multiple temperature plateaus.
• Seed germination and plant tissue culture where humidity-independent thermal stability is prioritized.
• Stability testing of pharmaceutical intermediates per ICH Q1A(R2) guidelines (non-humidity-controlled variants).
• Educational laboratories conducting foundational microbiology and molecular biology experiments.

FAQ

What is the maximum allowable ambient temperature for continuous operation?
The DHP-9082 must be operated in environments between +5 °C and +35 °C. Operation above 35 °C may impair cooling efficiency and compromise temperature uniformity.

Can the incubator be used for CO₂-dependent cell cultures?
No—this model lacks CO₂ regulation, humidification, or gas-tight sealing. It is intended for ambient-air incubation only.

Is the UV sterilization module validated for microbial reduction efficacy?
The optional UV-C lamp is designed for routine surface and air decontamination; however, users must perform in-house validation (e.g., biological indicators per ISO 11138-1) to confirm log-reduction performance against target organisms.

Does the unit support NIST-traceable calibration?
Yes—third-party calibration services using ISO/IEC 17025-accredited probes (e.g., Fluke 1524 with 0.05 °C uncertainty) are compatible with the DHP-9082’s internal sensor port and chamber access points.

Are spare parts and service manuals available internationally?
Yiheng provides English-language technical documentation and maintains a global distributor network for consumables (shelves, gaskets, UV lamps) and field-service support through authorized partners in EMEA, APAC, and North America.