Tianfeng LS-6500W Integrated Circulating Chiller

Overview

The Tianfeng LS-6500W Integrated Circulating Chiller is a precision-engineered thermal management system designed for stable, continuous cooling of heat-generating components in analytical instrumentation and industrial equipment. It operates on a closed-loop vapor-compression refrigeration cycle, utilizing a high-efficiency scroll compressor, optimized condenser/evaporator heat exchange architecture, and a stainless-steel reservoir to deliver consistent coolant delivery at tightly regulated temperatures. Engineered for laboratory and light-industrial environments, the unit maintains setpoint stability within ±0.1 °C across its operational range of 0–10 °C—critical for applications requiring thermal drift minimization, such as atomic absorption spectroscopy (GFAAS), inductively coupled plasma optical emission spectrometry (ICP-OES), X-ray fluorescence (XRF), and electron microscopy (SEM/TEM). Its water-cooled design ensures reliable performance under variable ambient conditions, while the integrated configuration eliminates external piping complexity and reduces footprint requirements.

Key Features

• Stainless steel reservoir and circulation pump—resistant to corrosion and compatible with deionized water or glycol-water mixtures
• Digital PID temperature controller with real-time display, adjustable setpoint resolution of 0.1 °C, and programmable ramp/soak profiles
• Scroll-type compressor—provides low vibration, high volumetric efficiency, and extended service life under continuous duty cycles
• Multi-layer safety architecture: compressor overheat protection, high/low refrigerant pressure cutoffs, overcurrent detection, and electronic overtemperature alarm
• Adjustable flow rate (0–2 L/min) and pressure (up to 2.0 bar) via calibrated bypass valve and centrifugal pump control
• Low-noise operation (<65 dB[A] at 1 m)—suitable for shared laboratory spaces and cleanroom-adjacent installations
• Compact integrated chassis (800 × 600 × 1065 mm) with castor-mounted base for flexible placement and repositioning
• Compliance-ready electrical architecture featuring CE-marked Siemens/Schneider/Omron contactors, relays, and circuit protection devices

Sample Compatibility & Compliance

The LS-6500W is compatible with a broad spectrum of laboratory instruments requiring precise coolant delivery—including graphite furnace atomic absorption spectrometers (GFAAS), ICP-MS and ICP-OES plasma sources, XRF and XRD sample stages, SEM/TEM column chillers, and laser-based systems (e.g., excimer or fiber lasers). Its 45 L reservoir supports uninterrupted operation during extended analytical runs, while the 2 L/min flow rate meets ASME BPE and ISO 8573-1 Class 3 compressed air–adjacent cooling demands. The unit conforms to IEC 61000-6-3 (EMC emissions) and IEC 61000-6-2 (immunity), and its construction materials comply with RoHS Directive 2011/65/EU. While not certified for GMP or FDA 21 CFR Part 11 out-of-the-box, its digital controller supports optional audit-trail logging when integrated with validated third-party SCADA or LIMS platforms—facilitating GLP-compliant thermal recordkeeping for regulated QC/QA workflows.

Software & Data Management

The LS-6500W features a standalone embedded controller with no proprietary software dependency. All operational parameters—including setpoint temperature, actual outlet temperature, flow status, pressure reading, compressor runtime, and fault codes—are accessible via the front-panel LCD interface. For integration into centralized monitoring systems, the unit provides a standard 4–20 mA analog output (temperature) and dry-contact relay outputs for alarm signaling (e.g., high-temperature, low-flow, compressor fault). Optional RS-485 Modbus RTU communication enables bidirectional parameter read/write and remote setpoint adjustment when connected to PLCs or building management systems (BMS). No cloud connectivity or vendor-specific drivers are required; data export is performed via manual log review or external data acquisition hardware compliant with IEEE 1451.2 transducer standards.

Applications

• Analytical Instrument Cooling: Stabilizes detector housings, plasma torches, and optical benches in ICP, XRF, and mass spectrometry platforms to suppress thermal noise and maintain calibration integrity
• Electron Microscopy: Maintains constant cold stage and column temperatures in SEM/TEM systems to minimize thermal drift during high-magnification imaging and EDS mapping
• Laser Systems: Provides stable coolant supply for diode-pumped solid-state (DPSS) and CO₂ lasers used in ablation, LIBS, and microfabrication—preventing wavelength shift and mode instability
• Materials Testing: Supports controlled thermal environments for tensile testers, rheometers, and DSC instruments where sample-stage temperature uniformity directly impacts modulus and transition measurements
• Pharmaceutical QC: Cools HPLC autosampler trays and column ovens to ensure retention time reproducibility per USP and ICH Q2(R2) method validation guidelines

FAQ

What is the maximum allowable inlet water temperature for the condenser side?
The unit is rated for cooling water inlet temperatures up to 35 °C. Sustained operation above this threshold may trigger high-pressure cutout protection and reduce refrigeration capacity.
Can the chiller operate with ethylene glycol solutions?
Yes—up to 30% v/v glycol/water mixture is supported; however, flow rate and pressure drop must be recalculated using manufacturer-provided viscosity correction charts.
Is remote monitoring possible without third-party hardware?
No. The base model requires external data loggers or PLC interfaces for remote telemetry; built-in Ethernet or Wi-Fi is not included.
Does the unit meet UL or CSA safety certification requirements?
It carries CE marking per EN 61000 and EN 60335-1; UL/CSA listing is available upon request for custom-configured units subject to additional testing and documentation.
What maintenance intervals are recommended for continuous laboratory use?
Compressor oil and refrigerant levels should be verified annually; condenser coil cleaning and filter replacement are advised every six months under typical lab ambient conditions (23 °C, 50% RH).