Zhongjiaojinyuan LX1000 Integrated Circulating Chiller

Overview

The Zhongjiaojinyuan LX1000 Integrated Circulating Chiller is a precision-engineered thermal management system designed for stable, continuous cooling of laboratory and industrial equipment requiring accurate temperature regulation. It operates on a vapor-compression refrigeration cycle, utilizing a hermetically sealed compressor to condense refrigerant, followed by heat exchange with deionized or purified water in a stainless-steel reservoir. The cooled fluid is then delivered via a high-efficiency circulation pump to external devices—such as spectrometers, mass spectrometers, rotary evaporators, NMR consoles, laser sources, or vacuum pumps—where it absorbs waste heat before returning to the chiller for re-cooling. Engineered for reliability under 24/7 operation, the LX1000 maintains setpoint temperatures within ±0.1 °C across its full 5–35 °C control range, supporting applications demanding tight thermal stability and reproducible experimental conditions.

Key Features

• Integrated design with compact footprint (340 W × 620 D × 600 H mm) and 56 kg operational weight, optimized for benchtop or floor-mounted deployment in constrained lab spaces.
• Dynamic PID-based temperature control architecture with real-time monitoring of bath temperature, reservoir level, and outlet pressure—displayed simultaneously on a backlit LCD interface.
• Critical refrigeration components—including the compressor and condenser fan—sourced from internationally certified suppliers to ensure long-term operational integrity and low failure rate.
• Adjustable circulation pump output (0–4.0 bar) with calibrated stainless-steel pressure gauge; flow rate up to 28 L/min at rated pressure, compatible with closed-loop external systems.
• 8-liter stainless-steel reservoir with 30 mm fill port, corrosion-resistant internal wetted surfaces, and integrated level sensor with visual/audible low-level alert.
• User-configurable safety functions: optional power-fail recovery mode, flow-rate alarm output (dry contact), and RS485 serial interface compliant with Modbus RTU protocol for SCADA or LIMS integration.
• Front-panel parameter retention: all user-defined settings—including setpoint, pump pressure limit, and alarm thresholds—are retained after power cycling without battery backup dependency.

Sample Compatibility & Compliance

The LX1000 is compatible with a broad spectrum of analytical, medical, and industrial instrumentation that require externally circulated coolant at controlled temperatures. Its 4.0 bar maximum outlet pressure and 28 L/min flow capacity enable reliable thermal coupling with high-backpressure systems—including diffusion pumps, RF plasma generators, MRI cryo-coolers, and high-power diode lasers. All wetted materials conform to ISO 8502-3 standards for metallic corrosion resistance. While not certified to UL/CSA or CE for standalone medical device use, the unit meets GB/T 2423.1–2008 (IEC 60068-2-1) environmental testing requirements for operating temperature and humidity ranges. For GLP/GMP-regulated environments, optional RS485 logging supports audit-trail-capable data capture when interfaced with validated laboratory software platforms.

Software & Data Management

The LX1000 operates autonomously via its embedded microcontroller and does not require proprietary host software for basic functionality. However, the RS485 communication port (optional configuration) enables bidirectional command/response interaction using standard Modbus RTU registers. Supported parameters include real-time temperature reading, setpoint adjustment, pump status, pressure value, reservoir level, and fault code reporting. When integrated into networked lab infrastructures, the chiller can feed time-stamped thermal telemetry into centralized data acquisition systems compliant with FDA 21 CFR Part 11 requirements—provided the host application implements electronic signature, audit trail, and role-based access controls per regulatory specifications.

Applications

• Analytical Instrumentation: Thermal stabilization of ICP-OES plasma torches, HPLC column ovens, FTIR interferometers, viscometers, polarimeters, and fermentation bioreactors.
• Vacuum & Medical Systems: Cooling of turbo-molecular pumps, oil diffusion pumps, MRI helium compressors, X-ray tube anodes, and patient temperature management blankets.
• Industrial & Research Equipment: Heat dissipation for CO₂ and fiber lasers, sputtering targets in PVD systems, mold temperature control in polymer processing, and exothermic reaction management in jacketed glass reactors.

FAQ

What is the minimum ambient temperature required for stable operation?
The LX1000 is rated for continuous duty in ambient environments between 10 °C and 35 °C. Operation below 10 °C may impair compressor oil viscosity and refrigerant return, potentially triggering low-pressure shutdown.

Can the chiller operate with ethylene glycol/water mixtures?
Yes—up to 30% v/v ethylene glycol is permissible; however, glycol reduces heat capacity and increases viscosity, resulting in ~12–15% lower effective cooling capacity and reduced maximum flow rate. Stainless-steel wetted parts remain compatible.

Is the reservoir volume sufficient for extended unattended operation?
With an 8 L capacity and low evaporation rate (<0.5 L/day under sealed-loop conditions), the unit supports multi-shift operation without refill. An external expansion tank or auto-fill module can be added for fully autonomous 72+ hour runs.

Does the LX1000 support remote start/stop via digital input?
Yes—when equipped with the RS485 option, discrete I/O signals (e.g., dry contact closure) can be mapped to start/stop commands through custom register configuration in the host controller.

What maintenance intervals are recommended?
Compressor oil and refrigerant charge require no scheduled replacement under normal use. Annual inspection of condenser coil cleanliness, pump seal integrity, and electrical terminal torque is advised. Filter cartridges (if installed upstream) should be replaced per fluid quality monitoring results.