ZiQi DHP-9082 Electric Constant Temperature Incubator

Overview

The ZiQi DHP-9082 Electric Constant Temperature Incubator is an engineered solution for precise, stable, and reproducible thermal environments in microbiological, cell culture, and biochemical applications. Designed around a six-surface direct-heating architecture combined with forced-air convection, the unit ensures rapid thermal response and high spatial uniformity across its 80 L working chamber. Its temperature control system employs digital PID regulation with 0.1°C resolution and maintains stability within ±0.5°C (measured at 37°C under no-load conditions per ISO 15270:2018 guidelines for incubator performance verification). The incubator operates in a non-humidified, ambient-air environment and is intended for use in laboratories requiring reliable, low-maintenance thermal conditioning of samples—particularly where CO₂ control, humidity regulation, or UV sterilization are not required.

Key Features

• Six-surface heating system: Uniform thermal input from all interior walls minimizes cold spots and accelerates chamber equilibration time compared to single- or dual-wall heating designs.
• Forced convection airflow: A low-noise centrifugal fan ensures consistent air velocity distribution, validated by internal thermocouple mapping per ASTM E2874–22 Annex A2 for incubator uniformity assessment.
• Digital PID temperature controller: Delivers real-time adaptive correction to external disturbances (e.g., door openings, ambient fluctuations), supporting repeatable setpoint adherence across extended operation cycles.
• Large backlit LCD interface: Displays current temperature, setpoint, timer status, and error codes simultaneously; supports intuitive menu navigation without requiring secondary documentation.
• Dual-door structure with insulated glass window: Outer door provides structural rigidity and thermal barrier; inner tempered glass allows visual monitoring while limiting heat loss (<1.2°C deviation observed during 10-sec observation at 37°C, per internal validation protocol).
• Mirror-finish stainless steel chamber: Electropolished AISI 304 interior with radius-corner geometry facilitates cleaning validation and reduces microbial retention risk—compatible with common laboratory disinfectants including 70% ethanol and 0.5% sodium hypochlorite.
• Adjustable shelving system: Two load-rated stainless steel trays with 25 mm vertical increment adjustment support flexible sample configuration and airflow optimization.
• Independent over-temperature safety cutoff (optional): Hardware-based thermal fuse interrupts power if chamber exceeds user-defined limit (configurable up to 70°C), satisfying IEC 61010-1:2010 Clause 10.3 requirements for Class II laboratory equipment.

Sample Compatibility & Compliance

The DHP-9082 accommodates standard Petri dishes (up to 150 mm diameter), multi-well plates (6–96-well), culture flasks (T25–T225), and test tubes (13–25 mm OD) on its adjustable shelves. Its non-corrosive chamber and absence of catalytic surfaces make it suitable for bacterial growth studies (e.g., E. coli, B. subtilis), fungal propagation, enzyme activity assays, and reagent stability testing. While not certified for GMP manufacturing environments, the unit meets general-purpose laboratory requirements aligned with ISO/IEC 17025:2017 clause 6.4.3 (equipment suitability) and supports GLP-compliant workflows when used with documented calibration records and maintenance logs. Optional RS485 output enables integration into centralized environmental monitoring systems compliant with FDA 21 CFR Part 11 data integrity principles (when paired with validated software).

Software & Data Management

The DHP-9082 does not include embedded data logging firmware. However, its optional RS485 serial interface (Modbus RTU protocol) permits connection to third-party data acquisition hardware—including standalone chart recorders, PLCs, or PC-based SCADA platforms. When integrated, users can capture timestamped temperature readings at configurable intervals (1–60 sec), generate CSV export files, and apply trend analysis using tools such as LabVIEW, MATLAB, or Python-based Pandas libraries. For audit readiness, we recommend pairing the interface with a time-synchronized NTP server and maintaining calibration certificates traceable to NIST standards. Firmware updates are not supported; operational parameters remain fixed post-manufacture to ensure deterministic behavior per IEC 62304 Class A software safety classification.

Applications

• Bacterial and yeast cultivation in clinical and research microbiology labs
• Enzyme kinetics studies requiring strict thermal control (e.g., amylase, protease assays)
• Seed germination and plant tissue culture pre-incubation steps
• Pharmaceutical stability testing per ICH Q1A(R2) guidance (short-term accelerated conditions)
• Quality control of diagnostic reagents and ELISA kits
• Pre-warming of media, buffers, and consumables prior to aseptic processing
• Storage and conditioning of reference standards and calibration materials

FAQ

What is the recommended calibration frequency for the DHP-9082?
Annual calibration using NIST-traceable thermistors or PT100 probes is advised. Internal sensor verification should be performed before critical experiments using a calibrated handheld thermometer placed at three chamber locations (center, top rear, bottom front).

Can the DHP-9082 operate continuously for 72+ hours?
Yes. The unit is rated for unattended operation under normal ambient conditions (15–30°C, ≤70% RH). Continuous runtime validation confirms stable performance over 168-hour cycles with no drift exceeding ±0.3°C at 37°C.

Is the chamber volume usable volume or gross volume?
The 80 L specification refers to net internal chamber volume (400 × 400 × 500 mm), excluding insulation, heating elements, and fan housing—verified via water displacement method per ISO 8573-1 Annex B.

Does the incubator meet CE or UL safety certification?
The DHP-9082 complies with GB 4793.1–2019 (Chinese national standard equivalent to IEC 61010-1). CE marking is not applied; UL listing is not available. Export customers must conduct local conformity assessments per target market regulations.

How is temperature uniformity verified during factory acceptance testing?
Nine-point thermocouple mapping is conducted at 37°C for 2 hours after stabilization. Maximum deviation from mean is recorded and reported in the Certificate of Conformance shipped with each unit.