Yiheng DHP-9012 Forced-Air Benchtop Incubator

Overview

The Yiheng DHP-9012 is a compact, microprocessor-controlled forced-air benchtop incubator engineered for reliable, low-drift temperature maintenance in cell culture, microbiological growth, and enzyme activity studies. Designed around a robust convection-driven thermal architecture, it employs a sheathed resistive heating element embedded within a mirror-finish 304 stainless steel chamber—ensuring rapid thermal response, minimal contamination risk, and long-term corrosion resistance. Its core control algorithm integrates fuzzy logic with PID regulation, enabling stable setpoint adherence (< ±0.3 °C fluctuation under steady-state conditions at 37 °C) while minimizing overshoot during recovery from door openings or load changes. The unit operates without refrigeration and is intended for ambient-conditioned laboratory environments where precise non-refrigerated thermal containment is required.

Key Features

• Fuzzy PID temperature controller with programmable timer (0–99 h 59 min), supporting repeatable thermal protocols and unattended operation.
• Adjustable-speed forced-air circulation system: fan speed dynamically modulates based on real-time deviation from setpoint—reducing air velocity during stable incubation to mitigate evaporation from culture vessels and shear stress on adherent cells.
• Dual-pane observation window with inner tempered glass door; automatically suspends heating and fan operation upon door opening to prevent thermal overshoot and ensure operator safety.
• Mirror-polished 304 stainless steel interior chamber and rounded corners facilitate cleaning, sterilization, and compliance with GLP hygiene standards.
• Independent mechanical over-temperature cut-off circuit (optional): hardwired safety layer that interrupts power when internal temperature exceeds user-defined threshold—fully compliant with IEC 61010-1 requirements for laboratory equipment safety.
• Optional multi-stage programmable controller: supports up to 7 user-defined programs, each comprising 9 sequential steps; parameters include target temperature, dwell time (0–5999 min), ramp rate, and fan speed—enabling gradient incubation, staged activation, and circadian rhythm simulation.

Sample Compatibility & Compliance

The DHP-9012 accommodates standard tissue culture flasks (T25–T175), Petri dishes (60–150 mm), multi-well plates (6–96-well), and small-volume bioreactors (≤500 mL). Its 16 L chamber volume allows simultaneous incubation of up to 12 T75 flasks with adequate airflow clearance. The unit meets ISO 13485 design control principles for medical device ancillary equipment and conforms to EN 61000-6-3 (EMC emission) and EN 61000-6-2 (immunity) standards. Optional UV-C (254 nm) germicidal irradiation—installed above the chamber ceiling—delivers ≥100 µW/cm² intensity at chamber center, validated per ISO 15714 for airborne microbial reduction (>3-log CFU reduction for E. coli and S. aureus aerosols after 30 min exposure).

Software & Data Management

While the base configuration features a local LCD interface only, optional RS485 serial communication enables integration into centralized lab monitoring systems via Modbus RTU protocol. When paired with Yiheng’s optional data logger module or third-party SCADA platforms (e.g., Ignition, LabVIEW), users can archive timestamped temperature logs with ±0.1 °C resolution, generate audit trails compliant with FDA 21 CFR Part 11 (when deployed with electronic signature-capable host software), and trigger email/SMS alerts on deviation events. Thermal printer output provides hard-copy verification for SOP-driven workflows in QC/QA environments subject to ISO/IEC 17025 accreditation.

Applications

• Mammalian and insect cell line propagation (e.g., HEK293, CHO-K1, Sf9) at physiological temperatures (37 °C ± 0.5 °C).
• Bacterial and fungal cultivation (e.g., E. coli, S. cerevisiae) across mesophilic ranges (25–42 °C).
• Enzyme kinetics assays requiring stable thermal environments for extended durations (e.g., ELISA plate incubation, ligase reactions).
• Seed germination and plant tissue culture under controlled non-photoperiodic conditions.
• Stability testing of pharmaceutical intermediates per ICH Q1A(R2) guidelines (long-term storage at 25 °C/60% RH simulated via dry incubation).

FAQ

What is the maximum ambient temperature at which the DHP-9012 maintains specified uniformity?

The unit is rated for operation in ambient environments up to 30 °C; performance validation (per ASTM E145-20 Annex A2) confirms ±1.5 °C uniformity at 37 °C only when ambient remains ≤25 °C.
Is the UV lamp option validated for sterility assurance?

Yes—the optional 254 nm UV-C module undergoes factory photometric calibration and includes a quartz sleeve for ozone-free operation; users must perform periodic radiometric verification using NIST-traceable UV meters.
Can the incubator be validated for GMP use?

Yes—its construction, sensor layout (single Pt100 RTD with redundant analog output), and optional data logging support IQ/OQ/PQ execution per ASTM E2500 and EU Annex 15; full validation documentation kits are available upon request.
Does the unit support external humidity control?

No—this is a dry-air incubator; relative humidity is not regulated and will equilibrate with ambient conditions (typically 30–60% RH at 25 °C). For humidified applications, consider the Yiheng HPG series.
What electrical supply is required?

Standard configuration operates on 220 V AC ±10%, 50 Hz single-phase; no neutral or grounding conductor beyond standard lab receptacle (IEC C13 inlet).