Tianfeng LS-1HP Circulating Chiller

Overview

The Tianfeng LS-1HP Circulating Chiller is an integrated, water-cooled precision temperature control system engineered for stable thermal management of high-sensitivity laboratory and industrial equipment. It operates on a closed-loop refrigeration cycle utilizing a scroll compressor, thermostatic expansion valve, and forced-convection heat exchange to maintain precise coolant temperatures between 0 °C and 10 °C with a stability of ±0.1 °C. Designed for continuous-duty operation, the unit delivers 2.5 kW of refrigeration capacity at standard conditions (inlet water 12 °C, outlet water 7 °C; ambient cooling air 30 °C inlet / 40 °C outlet). Its compact footprint (650 × 550 × 915 mm), stainless steel reservoir (27 L), and integrated circulation pump (2 L/min @ 2.0 bar) make it suitable for installation in space-constrained analytical laboratories and instrument bays.

Key Features

• High-precision digital PID temperature controller with real-time display of setpoint and actual coolant temperature
• Scroll-type compressor delivering consistent refrigeration performance, low vibration, and extended service life
• Full stainless steel water tank and pump housing—corrosion-resistant and compliant with GLP-compatible cleaning protocols
• Dual operating modes: fixed-setpoint constant temperature and intelligent adaptive temperature regulation based on load feedback
• Comprehensive safety architecture including compressor overheat protection, high/low pressure cutouts, overcurrent interruption, and overtemperature alarm
• Low-noise design optimized for shared laboratory environments—acoustic emissions meet ISO 3744-compliant ambient limits
• Modular electrical interface with certified components from Siemens, Schneider, and Omron for long-term reliability under 220 V / 50 Hz supply
• Configurable analog or digital fault signal output (0–10 V / 4–20 mA) for integration into centralized lab monitoring systems (e.g., LabVantage, DeltaV)

Sample Compatibility & Compliance

The LS-1HP chiller is compatible with a broad range of analytical and materials characterization instruments requiring stable coolant delivery, including graphite furnace atomic absorption spectrometers (GFAAS), inductively coupled plasma optical emission spectrometers (ICP-OES), ICP-mass spectrometers (ICP-MS), X-ray fluorescence (XRF) and X-ray diffraction (XRD) systems, scanning electron microscopes (SEM), and transmission electron microscopes (TEM). Its flow and pressure specifications ensure compatibility with OEM cooling ports on Thermo Fisher, PerkinElmer, Agilent, Shimadzu, and JEOL instrumentation. The unit conforms to ISO 9001:2000 quality management standards. While not inherently 21 CFR Part 11–compliant, its optional RKC controller supports audit-trail-capable logging when paired with validated third-party data acquisition software—enabling alignment with GLP and GMP documentation requirements for regulated pharmaceutical and clinical labs.

Software & Data Management

The LS-1HP operates as a standalone hardware-controlled system with no embedded firmware-based data logging. However, its analog voltage (0–10 V) and current (4–20 mA) output signals enable seamless integration with external SCADA, LIMS, or PLC platforms for remote temperature monitoring and alarm relay. Optional RS485 Modbus RTU communication (available upon request) permits bidirectional parameter configuration—including setpoint adjustment, pump speed modulation, and status polling—via industry-standard protocols. All temperature readings are traceable to NIST-traceable calibration references used during factory verification. For laboratories implementing electronic record retention, raw analog outputs may be logged using validated DAQ systems compliant with FDA 21 CFR Part 11 Annex 11 principles.

Applications

This chiller serves critical thermal regulation functions across multiple domains: In analytical laboratories, it stabilizes detector housings, RF generators, and vacuum pumps in ICP and XRD systems to minimize thermal drift in spectral resolution and peak reproducibility. In materials science facilities, it cools electron beam sources and stage controllers in SEM/TEM systems to suppress thermal lensing and mechanical creep. In QC/QA environments, it maintains consistent coolant temperature for laser-based metrology tools (e.g., interferometers, confocal microscopes), ensuring dimensional measurement repeatability. Beyond research, it supports industrial applications including mold temperature control in polymer processing, spindle and hydraulic oil cooling in CNC machining centers, and temperature stabilization of vacuum deposition chambers in thin-film fabrication.

FAQ

What is the maximum allowable return water temperature for safe operation?
The unit is designed for continuous operation with return water ≤40 °C. Sustained inlet temperatures above this threshold increase condensing pressure and accelerate compressor wear—potentially triggering high-pressure shutdown.
Can the LS-1HP be integrated into a building-wide BMS?
Yes—via optional RS485 Modbus RTU or standard 4–20 mA analog output, enabling read-only status monitoring and setpoint override within enterprise-level building management systems.
Is the chiller suitable for use with deionized or ultrapure water?
Yes—stainless steel wetted parts are compatible with ASTM Type I–III purified water. However, conductivity monitoring and periodic biocide treatment are recommended to prevent microbial growth in stagnant loops.
Does the unit support dual-temperature zone operation?
No—the LS-1HP is a single-loop system. Multi-zone control requires parallel units or a custom manifold configuration with independent flow regulation.
What maintenance intervals are recommended for laboratory-grade operation?
Filter driers should be replaced annually; refrigerant charge and compressor oil integrity verified every 24 months by certified HVAC-R technicians per AHRI Standard 700.