Hanuo DC-0530 Low-Temperature Constant-Temperature Circulating Bath

Overview

The Hanuo DC-0530 Low-Temperature Constant-Temperature Circulating Bath is an engineered thermal management system designed to deliver precise, stable, and reproducible temperature control across a wide operational range (−5 °C to 100 °C). It functions as a closed-loop liquid circulation source—utilizing water or compatible heat-transfer fluids—to maintain uniform thermal conditions in external experimental apparatus or within its own 30 L stainless steel bath chamber. Its dual-mode operation supports both internal thermostatic experiments and external temperature control via integrated pump-driven fluid transfer. This architecture enables accurate thermal conditioning for applications requiring strict adherence to ISO 17025–compliant calibration protocols, ASTM E2877 (standard practice for temperature calibration of liquid-in-glass thermometers), and GLP-regulated stability testing environments.

Key Features

• Stainless steel interior tank and top plate ensure corrosion resistance, ease of cleaning, and long-term compatibility with aqueous, ethylene glycol–water mixtures, and other common laboratory heat-transfer media.
• Digital PID temperature controller (XMT series) provides real-time setpoint adjustment, high-resolution display, and adaptive response to load variations—minimizing overshoot and stabilizing within ±0.05 °C under steady-state conditions.
• Hermetically sealed refrigeration unit delivers reliable sub-ambient cooling down to −5 °C while incorporating dual safety protections: compressor overheat cutoff and motor overcurrent shutdown.
• High-capacity circulation pump (13 L/min flow rate) supports both internal homogenization and external fluid routing through standardized ½″ NPT ports, enabling integration with jacketed reactors, viscometers, spectrophotometer cells, or custom thermal test fixtures.
• Ergonomic design includes front-mounted drain valve for rapid bath emptying, large backlit LCD interface for visibility under varied lighting conditions, and optional horizontal (DCW-series) configuration for benchtop space optimization.

Sample Compatibility & Compliance

The DC-0530 accommodates a broad spectrum of sample formats and auxiliary instrumentation—including glassware (e.g., immersion coils, condenser jackets), metal reaction vessels, and polymer-based sensor housings—provided fluid compatibility is verified per manufacturer guidelines. Its temperature stability performance aligns with requirements for USP (Thermal Analysis), ISO 13320 (laser diffraction particle sizing thermal conditioning), and ASTM D2556 (viscosity measurement at controlled temperature). The unit’s digital control architecture supports audit-ready operation when paired with validated external data loggers; while not natively 21 CFR Part 11–compliant, it may be deployed in FDA-regulated environments under documented procedural controls for non-critical thermal support functions.

Software & Data Management

The DC-0530 operates via embedded firmware with no proprietary software dependency. All temperature setpoints, real-time readings, and alarm status are accessible via the front-panel LCD. For traceable data acquisition, users may integrate third-party USB or RS-485 data loggers (e.g., Omega OM-DAQPRO-5300, Testo 176 T4) using standard analog voltage (0–5 V) or 4–20 mA output signals—enabling time-stamped recording compliant with internal QA/QC documentation standards. Configuration parameters are retained during power interruption, and the system supports scheduled on/off cycles via external programmable timers.

Applications

• Calibration of temperature-sensitive analytical instruments (e.g., HPLC column ovens, FTIR sample compartments, DSC reference cells)
• Controlled-rate cooling/heating of chemical reaction mixtures in jacketed glass reactors
• Thermal preconditioning of polymer samples prior to tensile or DMA testing per ASTM D638/D790
• Stabilization of optical components during interferometric measurements
• Support of enzymatic activity assays requiring strict thermal regulation (e.g., ELISA incubation validation)
• Environmental stress screening of electronic assemblies per IPC-9701

FAQ

What fluid types are compatible with the DC-0530 bath?

Deionized water is recommended for operation between 0 °C and 100 °C. For sub-zero use, a mixture of water and propylene glycol (e.g., 30:70 v/v) is advised to prevent freezing and ensure pump longevity.
Can the unit maintain temperature stability during continuous external circulation?

Yes—the system is rated for sustained external flow at up to 13 L/min while maintaining ±0.05 °C stability, provided ambient conditions remain within 15–30 °C and heat exchange surface area of the external loop is appropriately sized.
Is remote monitoring or control supported?

No native Ethernet or Wi-Fi interface is included; however, analog output signals allow integration with SCADA systems or PLC-based lab infrastructure via standard industrial I/O modules.
Does the DC-0530 meet CE or UL safety certification requirements?

The unit complies with IEC 61010-1:2010 for laboratory electrical equipment safety. CE marking is applied per EU Directive 2014/30/EU (EMC) and 2014/35/EU (LVD); UL certification is not held, but design follows UL 61010-1 equivalency principles.
What maintenance intervals are recommended?

Compressor oil inspection every 24 months; coolant replacement every 12 months for glycol mixtures, or biannually for deionized water with periodic conductivity checks.