Hanuo SC-30A Water & Oil Bath Circulating Thermostatic Tank

Overview

The Hanuo SC-30A Water & Oil Bath Circulating Thermostatic Tank is a precision benchtop temperature control system engineered for consistent thermal management in analytical, synthetic, and quality assurance laboratories. Operating on the principle of resistive heating combined with forced internal liquid circulation, the SC-30A maintains stable thermal environments across a wide operational range—from ambient temperature up to 200 °C—making it suitable for both aqueous and high-boiling-point oil-based applications. Its robust stainless steel bath chamber, integrated immersion heater, and optimized fluid dynamics ensure uniform temperature distribution throughout the 30 L working volume (400 × 330 × 230 mm), minimizing axial and radial thermal gradients. Unlike open-bath or non-circulating systems, the SC-30A’s internal recirculation pump actively homogenizes temperature across the entire bath, reducing localized hot spots and enabling reproducible experimental conditions critical for calorimetry, reaction kinetics, viscometry calibration, and reference thermometer verification.

Key Features

• Benchtop design with compact footprint (W × D × H: 400 × 330 × 230 mm), optimized for space-constrained lab environments.
• Dual-mode compatibility: validated for use with deionized water (up to 100 °C) and thermally stable silicone or mineral oils (up to 200 °C), supporting diverse application requirements without hardware modification.
• PID-based digital temperature controller delivers rapid thermal response and sustained stability at ±0.2 °C over the full 200 °C range, with intuitive touch-key interface and dual LED display showing both setpoint and real-time bath temperature.
• Internally recirculating pump (flow rate: ~3 L/min) ensures homogeneous temperature distribution within the bath chamber; no external plumbing or reservoir required.
• Stainless steel tank construction (SUS304) resists corrosion from water, alcohols, and common heat-transfer oils; reinforced insulation minimizes surface temperature rise and energy consumption.
• Over-temperature protection and dry-run safety cutoff prevent heater damage during low-fluid or no-load operation.

Sample Compatibility & Compliance

The SC-30A accommodates standard laboratory vessels—including glass beakers (up to 1000 mL), jacketed reactors, probe-style sensors, and calibration standards—within its 310 × 280 mm open bath aperture. Its temperature stability and traceable thermal performance support compliance with method requirements under ISO/IEC 17025, ASTM E645 (for temperature calibration baths), and USP (Thermometers and Temperature Sensors). While not certified to FDA 21 CFR Part 11 out-of-the-box, audit-ready operation is achievable through documented SOPs, manual log entries, and periodic verification using NIST-traceable reference thermometers. The unit meets CE electromagnetic compatibility (EMC) and low-voltage directives (LVD) for laboratory use in EU markets.

Software & Data Management

The SC-30A operates as a standalone analog-digital hybrid instrument with no built-in data logging or PC connectivity. All operational parameters—including setpoint, actual temperature, and status indicators—are displayed locally via the dual LED interface. For integration into regulated environments, users may pair the unit with external data acquisition systems (e.g., USB thermocouple loggers or PLC-based SCADA interfaces) to record time-stamped temperature profiles. When deployed in GLP or GMP settings, laboratories are advised to implement routine verification protocols (e.g., daily stability checks at three points across the range) and maintain calibration records per internal QA policies.

Applications

• Calibration of liquid-in-glass thermometers, RTDs, thermistors, and infrared sensors against known thermal references.
• Temperature-controlled sample conditioning prior to spectroscopic, chromatographic, or rheological analysis.
• Supporting exothermic reaction monitoring in organic synthesis where precise upper-temperature limits must be enforced.
• Pre-heating and thermal equilibration of viscometers, density meters, and refractometers per ASTM D445, D1298, and D1218.
• Accelerated aging studies in polymer and pharmaceutical stability testing (ICH Q1A).
• Heat transfer coefficient determination and thermal conductivity measurements using guarded-hot-plate or transient line-source methods.

FAQ

Can the SC-30A operate with external circulation to a jacketed reactor?
No—the SC-30A is configured for internal circulation only. For external loop applications, consider the SC-30B or SC-40B models, which include an integrated outlet port and adjustable flow valve.
What oil types are recommended for operation above 100 °C?
Silicone oils (e.g., Dow Corning PMX-200 series, flash point >300 °C) and high-purity white mineral oils meeting USP grade specifications are validated for continuous use up to 200 °C.
Is the temperature stability value (±0.2 °C) specified at full load or no-load condition?
This specification reflects steady-state performance under typical operating conditions with 25–30 L of fluid and ambient lab temperature (20–25 °C); stability may vary slightly under rapid ramping or extreme ambient fluctuations.
Does the unit include a drain valve for fluid replacement?
Yes—a front-mounted brass drain valve facilitates safe, controlled emptying of the bath chamber without disassembly.
Can the LED display be upgraded to an LCD with graphing capability?
No—LCD upgrade options (e.g., model SC-30A-LCD) are discontinued. Current firmware and hardware architecture do not support graphical display or onboard trend logging.