Tuofeng TF-0506 Low-Temperature Constant-Temperature Circulating Bath
| Brand | Tuofeng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Water/Oil Bath Thermostatic Circulator |
| Circulation Mode | Internal & External Circulation |
| Temperature Control | Heating-Only |
| Bath Capacity | 300 × 250 × 200 mm (L × W × H) |
| Temperature Range | +5 °C to 100 °C |
| Temperature Stability | ±0.5 °C |
| Pump Flow Rate | 5 L/min |
Overview
The Tuofeng TF-0506 Low-Temperature Constant-Temperature Circulating Bath is a precision-engineered thermal control system designed for laboratory environments requiring stable, uniform temperature maintenance across a wide operational range (+5 °C to 100 °C). Utilizing a high-efficiency refrigeration-compressor heating hybrid architecture with PID-controlled digital temperature regulation, the unit delivers consistent thermal output for external equipment cooling or sample bath immersion. Unlike basic water baths, the TF-0506 integrates dual-path circulation—enabling both internal temperature homogenization and external heat exchange via flexible tubing connections to reactors, viscometers, spectrophotometer jackets, or other process-critical instrumentation. Its stainless-steel inner tank and corrosion-resistant housing ensure long-term reliability under repeated thermal cycling and exposure to aqueous or mild organic media. The system complies with general safety requirements per IEC 61010-1 for laboratory electrical equipment and supports traceable temperature calibration protocols aligned with ISO/IEC 17025–accredited practices.
Key Features
- Stainless-steel working bath (300 × 250 × 200 mm) with reinforced corner welds and smooth interior finish for easy cleaning and minimal contamination risk
- Dual-mode circulation: adjustable internal recirculation for bath uniformity and external port (G1/4″ BSP) for closed-loop connection to peripheral devices
- PID digital temperature controller with real-time display, programmable setpoint retention, and over-temperature cut-off protection
- High-efficiency hermetic compressor paired with optimized copper-aluminum evaporator/heater assembly for rapid thermal response and low power consumption
- Low-noise operation (<55 dB(A)) suitable for shared lab spaces and QC environments where acoustic interference must be minimized
- Integrated liquid level sensor with visual alarm and automatic heater shutdown to prevent dry-run damage
Sample Compatibility & Compliance
The TF-0506 accommodates standard laboratory glassware up to Ø200 mm diameter and supports immersion of probes, sensors, reaction vessels, and analytical cell holders. It is compatible with deionized water, ethylene glycol/water mixtures (up to 30% v/v), and silicone oils within its specified temperature envelope. While not certified for explosive atmospheres (ATEX) or intrinsically safe operation, the unit meets CE marking requirements for electromagnetic compatibility (EMC Directive 2014/30/EU) and low-voltage safety (LVD Directive 2014/35/EU). For GLP/GMP-regulated workflows, optional NIST-traceable calibration certificates are available upon request, and the controller supports manual logging for audit-ready temperature records.
Software & Data Management
The TF-0506 operates as a standalone analog/digital hybrid instrument without embedded firmware-based data logging. However, its RS-232 serial interface (optional USB-to-serial adapter) enables integration with third-party SCADA or LabVIEW-based monitoring systems for remote setpoint adjustment and temperature telemetry. Users may configure external data acquisition modules to record time-stamped temperature readings at user-defined intervals (e.g., every 10 seconds), supporting compliance with FDA 21 CFR Part 11 when deployed with validated electronic signature and audit trail software layers. No proprietary cloud platform or vendor-specific drivers are required.
Applications
- Calibration of thermistors, RTDs, and infrared temperature sensors against known thermal references
- Thermal conditioning of samples prior to rheological, viscometric, or density measurements per ASTM D445 and ISO 3104
- Temperature stabilization of UV-Vis cuvette holders, HPLC column ovens, and FTIR sample compartments
- Controlled-rate heating in polymer melt flow index (MFI) testing per ASTM D1238
- Supporting enzymatic assays and cell culture incubation pre-conditioning in life science labs
- Providing auxiliary cooling for rotary evaporators, condensers, and vacuum pump chillers
FAQ
Can the TF-0506 operate below 0 °C?
No—the TF-0506 model is rated for a minimum operating temperature of +5 °C. For sub-zero applications, consider the TF-2006 (−20 °C to 100 °C) or TF-3005 (−30 °C to 100 °C) variants.
Is external circulation compatible with pressurized systems?
The external outlet is rated for ≤0.2 MPa static pressure; continuous operation above this limit requires an inline pressure regulator and flow restrictor to avoid pump cavitation.
Does the unit support programming ramps or holds?
The base controller does not include multi-step temperature profiling; this functionality requires external PLC or PC-based control via RS-232 interface.
What maintenance is recommended for long-term stability?
Biannual inspection of refrigerant charge integrity, quarterly cleaning of condenser coils, and annual verification of temperature sensor drift using a calibrated reference thermometer are advised.
Can it be used with flammable solvents?
Not recommended—only non-flammable heat transfer fluids (e.g., water, aqueous glycol, silicone oil) should be used. The unit lacks explosion-proof certification.
