Hanuo DC-1006 Precision Refrigerated/Heating Circulating Bath
| Brand | Hanuo |
|---|---|
| Origin | Shanghai, China |
| Model | DC-1006 |
| Instrument Type | Constant-Temperature Circulating Bath |
| Bath Volume | 6 L |
| Temperature Range | −10 to 100 °C |
| Temperature Stability | ±0.05 °C |
| Internal/External Circulation | Yes |
| Cooling/Heating Function | Dual-mode |
| Circulation Flow Rate | 4 L/min |
| Bath Dimensions (W×D×H) | 250 × 200 × 150 mm |
| Opening Size (W×D) | 180 × 140 mm |
| Bath Depth | 150 mm |
Overview
The Hanuo DC-1006 is a precision refrigerated/heating circulating bath engineered for stable thermal control in laboratory and analytical applications requiring accurate, reproducible temperature maintenance across a broad operational range. Utilizing a dual-mode thermoelectric compression refrigeration system coupled with high-efficiency resistive heating elements, the unit achieves rapid thermal equilibration and sustained stability under dynamic load conditions. Its core function relies on closed-loop liquid circulation—typically using water or water-glycol mixtures—to transfer conditioned thermal energy between the bath reservoir and external devices (e.g., viscometers, spectrophotometer jackets, reaction blocks, or material testing chambers). The DC-1006 operates within a verified temperature span of −10 °C to +100 °C, with a long-term stability specification of ±0.05 °C at setpoint—meeting the performance thresholds required for ASTM E2932-compliant thermal validation protocols and ISO/IEC 17025-accredited calibration workflows.
Key Features
- Precision dual-mode temperature control: Integrated compressor-based cooling and PID-regulated resistive heating enable seamless transition between sub-zero and boiling-point operation without manual intervention.
- High-stability thermal architecture: Stainless steel 304 bath tank with optimized insulation and low-thermal-mass sensor placement ensures minimal spatial gradient (<0.1 °C across bath volume) and fast recovery after sample insertion.
- Bi-directional circulation system: Supports both internal recirculation (for bath homogeneity) and external pumping (max. 4 L/min at ≤3 bar backpressure) via standardized 1/4″ NPT ports with flow regulation valve.
- Digital touchscreen interface: 4.3″ capacitive display with intuitive menu navigation, real-time graphing of temperature vs. time, and programmable ramp-soak profiles (up to 10 segments).
- Safety-certified design: Includes over-temperature cutoff (±2 °C deviation), low-level fluid detection, dry-run protection, and ground-fault circuit interruption compliant with IEC 61010-1 Ed.3.
Sample Compatibility & Compliance
The DC-1006 accommodates standard laboratory vessels up to Ø140 mm diameter and 150 mm immersion depth. Its open-bath configuration supports direct immersion of probes, sensors, cuvettes, and small reactors. When used with external equipment, compatibility extends to all instruments accepting 1/4″ push-to-connect or NPT coolant interfaces—including Brookfield rheometers, Malvern Panalytical particle systems, and Thermo Fisher UV-Vis accessories. The unit conforms to electromagnetic compatibility standards EN 61326-1 and safety standard EN 61010-1. Its temperature stability and traceable calibration capability support GLP/GMP environments where documented thermal consistency is mandated per FDA 21 CFR Part 11 Annex 11 requirements for electronic records integrity.
Software & Data Management
The DC-1006 features RS485 Modbus RTU and optional USB-to-serial connectivity for integration into centralized lab monitoring systems (e.g., LabVantage, Siemens Desigo, or custom SCADA platforms). Included PC software enables remote setpoint adjustment, real-time data logging (timestamped CSV export), alarm history review, and automated report generation aligned with ISO/IEC 17025 clause 7.7 (result reporting). Audit trail functionality records all parameter changes, user logins, and system events with immutable timestamps—supporting regulatory audit readiness and 21 CFR Part 11 electronic signature compliance when deployed with validated authentication modules.
Applications
- Calibration of temperature-sensitive instrumentation (thermocouples, RTDs, infrared sensors) under controlled thermal gradients.
- Thermal conditioning of samples prior to mechanical testing (tensile, impact, creep) per ASTM D638 and ISO 527 protocols.
- Stabilization of optical components in spectroscopy setups (FTIR, Raman, fluorescence) to minimize wavelength drift.
- Temperature-controlled enzymatic assays and cell viability studies requiring precise incubation below ambient.
- Supporting cold-trap operation in rotary evaporation systems and condenser jacketing in fractional distillation assemblies.
FAQ
What is the maximum external load pressure the DC-1006 can drive?
The pump delivers up to 3 bar (43.5 psi) static pressure at zero flow; continuous operation at ≥2.5 bar requires confirmation of external system backpressure tolerance.
Can the bath operate continuously at −10 °C in a 30 °C ambient environment?
Yes—the unit is rated for continuous operation at full cooling capacity under ISO 13732-1 Class II ambient conditions (15–35 °C, ≤75% RH).
Is the temperature sensor traceably calibrated?
Each unit ships with a factory calibration certificate referencing NIST-traceable standards; optional UKAS-accredited calibration (ISO/IEC 17025) is available upon request.
Does the DC-1006 support programming of multi-step thermal profiles?
Yes—up to 10 independent ramp-and-soak segments can be defined, stored, and recalled via the front panel or PC software.
What fluids are compatible with the circulation system?
Deionized water, 30% ethylene glycol/water, and silicone oil (up to 100 cSt viscosity); avoid halogenated solvents or highly corrosive media.
