Hanuo HN-15TS Precision Glass Jacketed Circulating Water Bath

Overview

The Hanuo HN-15TS Precision Glass Jacketed Circulating Water Bath is an engineered thermal stability platform designed for laboratory-grade temperature control in analytical, quality control, and research applications requiring real-time visual monitoring of sample behavior. Constructed with optically clear borosilicate glass walls on all four sides, the unit enables unobstructed observation of fluid dynamics, phase transitions, colorimetric changes, and reaction kinetics within the bath medium—critical for applications in polymer rheology, pharmaceutical dissolution testing, enzyme kinetics, and calibration of temperature-sensitive sensors. Its operation relies on a high-efficiency resistive heating system coupled with a precision PID feedback loop, maintaining setpoint accuracy within ±0.05°C across its full operating range of RT + 5°C to 80°C. The 15-liter working volume is optimized for compatibility with standard immersion probes, viscometers, spectrophotometer cuvettes, and small-scale reactors—while the internal circulation pump ensures uniform thermal distribution without external plumbing or risk of cross-contamination.

Key Features

• Four-sided transparent borosilicate glass chamber for continuous optical access to bath contents and immersed samples
• PID-based digital temperature controller with dual-line LCD display showing both setpoint and real-time measured temperature
• Internal recirculation system enhancing thermal homogeneity; no external tubing or auxiliary pumps required
• Touch-sensitive membrane keypad interface with intuitive navigation and parameter entry
• Standard configuration supports manual setpoint operation; optional firmware upgrade enables 1–30 segment programmable temperature profiles (ramp/soak)
• Configurable RS232 or RS485 serial interface for integration into centralized lab data acquisition systems (e.g., LabVIEW, SCADA)
• Optional external Pt100 sensor input channel for closed-loop monitoring and control of secondary thermal zones (e.g., jacketed reactor vessels or flow cells)
• Robust stainless steel chassis with anti-slip rubber feet and integrated overflow drainage port for safe liquid containment

Sample Compatibility & Compliance

The HN-15TS accommodates a broad spectrum of sample formats including glass and quartz cuvettes (up to 10 mm pathlength), rotating spindle viscometers, differential scanning calorimetry (DSC) sample pans, and small-volume bioreactors. Its open-top design and generous 245 × 155 mm aperture facilitate easy insertion and retrieval of instrumentation. While not certified for hazardous location use (e.g., ATEX or IECEx), the unit complies with IEC 61010-1:2010 for electrical safety in laboratory equipment and meets CE marking requirements for EMC and low-voltage directives. It supports GLP-compliant workflows through optional audit-trail-enabled software (when paired with compatible PC-based control modules), enabling timestamped logging of temperature setpoints, deviations, and operator actions per FDA 21 CFR Part 11 Annex 11 guidelines.

Software & Data Management

When equipped with the optional communication module, the HN-15TS interfaces seamlessly with third-party data logging platforms via ASCII protocol over serial connection. Raw temperature readings are transmitted at user-defined intervals (1–60 s), supporting CSV export for post-processing in MATLAB, Python (Pandas), or Excel. The programmable profile mode stores up to 30 independent steps—including ramp rates (°C/min), dwell durations (s), and hold tolerances—with non-volatile memory retention during power loss. Firmware updates are delivered via USB-to-serial adapter and validated using SHA-256 checksums to ensure integrity. All configuration changes generate immutable log entries when audit mode is activated, satisfying traceability requirements in regulated environments.

Applications

• Calibration of thermometers, RTDs, and thermocouples against NIST-traceable references
• Temperature-dependent viscosity measurements using rotational or capillary viscometers
• Dissolution testing of solid oral dosage forms per USP and Ph. Eur. 2.9.3
• Stability studies of protein formulations under accelerated thermal stress conditions
• Controlled heating of solvents prior to GC or HPLC injection to minimize thermal shock effects
• Pre-conditioning of elastomeric materials for tensile testing per ASTM D412 and ISO 37
• Support of photochemical reaction monitoring in UV-Vis spectroscopy setups

FAQ

Is the HN-15TS suitable for oil bath applications?

No—it is specifically engineered for aqueous or water-miscible fluids; use of oils may compromise seal integrity and thermal sensor accuracy.
Can the unit maintain temperature below ambient?

No—this is a heating-only system with a minimum operating point of RT + 5°C; refrigerated variants require separate model designation.
What is the maximum allowable fill level for optimal circulation?

The bath should be filled to within 20 mm of the top rim to prevent overflow during internal circulation and thermal expansion.
Does the device support remote start/stop via digital I/O?

Not natively; external control requires integration through the serial interface using custom scripting or PLC-level command parsing.
Is calibration documentation provided with shipment?

A factory calibration certificate (traceable to CNAS-accredited standards) is available upon request at time of order; on-site verification services are offered separately.