Great Wall SY-10 Circulating Bath

Overview

The Great Wall SY-10 Circulating Bath is an engineered thermal management system designed for precise, stable, and reliable temperature control in laboratory-scale applications requiring external heat transfer or sample conditioning. Operating on the principle of forced convection via a closed-loop liquid circulation path, the unit maintains consistent thermal energy delivery to external devices—such as reactors, viscometers, spectrophotometer cells, or analytical probes—through its dual-mode (internal and external) circulation architecture. Unlike static water baths, the SY-10 integrates a high-integrity stainless steel shielded pump capable of continuous operation at elevated temperatures up to 200 °C without leakage or degradation, ensuring long-term operational safety and minimal maintenance. Its PID-based digital temperature controller delivers real-time feedback regulation with resolution to 0.1 °C and stability within ±0.5 °C across the full operating range (ambient +5 °C to 200 °C), making it suitable for applications demanding reproducible thermal environments under non-refrigerated conditions.

Key Features

• High-reliability, high-temperature-resistant stainless steel shielded circulation pump—certified for continuous duty at 200 °C with zero fluid leakage.
• SUS304 stainless steel bath tank with large-diameter opening (Φ350 mm) for easy filling, cleaning, and immersion of bulky samples or accessories.
• PID digital temperature controller with LED display offering intuitive setpoint entry, real-time process value readout, and auto-tuning capability for rapid thermal equilibration.
• ODM-sourced industrial-grade heating element compliant with GB/T 14048 and GB 4706 standards, ensuring electrical safety, thermal uniformity, and extended service life.
• Vertical chassis with integrated castor wheels enabling ergonomic repositioning within shared lab spaces without disassembly or tooling.
• Dual-port 3/4″ stainless steel insulated quick-connect fittings—pre-configured for seamless integration with external equipment using standard compression or NPT-compatible tubing.

Sample Compatibility & Compliance

The SY-10 supports compatibility with water, silicone oil, glycol-water mixtures, and other non-corrosive heat-transfer fluids rated for operation up to 200 °C. Its all-stainless wetted path (pump head, tubing, tank, and ports) resists oxidation and chemical degradation from repeated exposure to organic solvents and aqueous electrolytes. While not certified for use in GMP-regulated production environments, the unit conforms to general laboratory safety requirements per GB/T 29889–2013 (Laboratory Equipment Safety Specifications) and IEC 61010-1:2010 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use). It is routinely deployed in R&D labs, QC testing facilities, and university teaching laboratories where GLP-aligned documentation practices—including calibration traceability, operator log entries, and preventive maintenance records—are maintained manually or via third-party LIMS platforms.

Software & Data Management

The SY-10 operates as a standalone analog-digital hybrid instrument with no embedded firmware or network connectivity. Temperature setpoints and real-time readings are managed exclusively through its front-panel LED interface; no proprietary software, drivers, or cloud services are required. For labs implementing electronic recordkeeping under FDA 21 CFR Part 11 or ISO/IEC 17025, users may integrate the unit into validated workflows by pairing it with external data loggers (e.g., Omega OM-DAQPRO-5300 or Keysight 34972A) connected via optional analog output modules (0–5 V or 4–20 mA)—available as factory-installed accessories upon request. All calibration certificates, maintenance logs, and usage histories must be retained locally per institutional GLP/GMP documentation policies.

Applications

• Thermal conditioning of reaction vessels in synthetic chemistry and catalysis studies.
• Stabilization of optical components (e.g., cuvettes, flow cells) during UV-Vis, fluorescence, or FTIR measurements.
• Temperature-dependent rheological testing when coupled with rotational or capillary rheometers.
• Calibration of thermocouples, RTDs, and infrared thermometers against NIST-traceable references.
• Pre-heating and holding of solvent reservoirs in HPLC or GC auxiliary systems.
• Material testing of polymers, adhesives, and coatings under controlled thermal stress profiles.

FAQ

Does the SY-10 support refrigeration or cooling functionality?

No—the SY-10 is a heating-only circulator. It does not incorporate compressors, Peltier elements, or dry ice interfaces. For sub-ambient operation, pairing with an external chiller via the external port is required.
Can the SY-10 be used with silicone oil at 180 °C continuously?

Yes—provided the selected oil meets ISO 6743-12 specifications for thermal stability and flash point (>220 °C), and the pump runtime remains within manufacturer-recommended duty cycles (≤8 h/day at >150 °C).
Is the bath tank drain valve included as standard equipment?

No—drain functionality is not integrated. Users must decant fluid manually or install an aftermarket stainless steel ball valve (1/2″ NPT) at the lowest accessible point of the tank.
What is the maximum allowable backpressure for external circulation?

The pump is rated for 1 bar (14.5 psi) maximum static pressure at rated flow (30 L/min); sustained operation above this threshold may reduce flow rate and accelerate bearing wear.
How often should the circulating fluid be replaced?

For water: every 3 months under daily use; for silicone oil: annually or after 1,000 cumulative operating hours—whichever occurs first—subject to visual inspection for discoloration, viscosity change, or particulate formation.