Tongzhou Weipu TC5000 Series High-Low Temperature Circulating Chiller

Overview

The Tongzhou Weipu TC5000 Series High-Low Temperature Circulating Chiller is an industrial-grade thermal management system engineered for precise, stable, and repeatable temperature control across demanding laboratory and pilot-scale process applications. Utilizing a dual-circuit refrigeration architecture combined with high-efficiency electric heating elements, the TC5000 delivers dynamic thermal regulation from −45 °C to +250 °C — a range uncommon among single-unit chillers in its class. Its core function relies on closed-loop circulation of thermally stable synthetic heat-transfer fluids (e.g., AUSI-05, AUSI-10) through external reactors, jacketed vessels, or material testing fixtures. The system employs multi-dimensional PID algorithms with adaptive gain scheduling to minimize overshoot and stabilize setpoints within ±0.3 °C under load — critical for exothermic reaction control, polymerization kinetics studies, or crystallization profiling.

Key Features

• Wide operational temperature span: −45 °C to +250 °C, enabling seamless transition between cryogenic condensation and high-temperature synthesis without equipment changeover
• Modular pump design with flow rates up to 75 L/min and pressure head up to 3.0 bar — compatible with high-resistance jacketed reactor systems and extended fluid loops
• PLC-integrated 7-inch resistive touchscreen HMI with real-time graphing, event logging, and multilingual UI support (English, German, French, Chinese)
• 100-step programmable temperature profile capability, supporting complex ramp-hold-cool sequences required for ASTM D3418 (DSC calibration), ISO 6721 (dynamic mechanical analysis), or USP environmental qualification
• Dual cooling configuration options: air-cooled (TC50xxH25F) for space-constrained labs; water-cooled (TC50xxH25W) for high-duty-cycle or ambient-temperature-sensitive installations
• Comprehensive I/O suite including isolated dry-contact outputs for alarm interlocking, RS485 Modbus RTU for SCADA integration, Ethernet-based Modbus TCP for centralized monitoring, and analog/digital PT100 inputs for external sensor feedback
• Structural flexibility: available in explosion-proof variants (certification documentation available upon request), stainless-steel enclosures for corrosive environments, and split-system configurations where chiller and controller are physically separated

Sample Compatibility & Compliance

The TC5000 series is designed to interface with a broad spectrum of external equipment, including glass-jacketed reactors (1–50 L), calorimeters, rheometers, extruders, and environmental test chambers. Its fluid circuit accommodates industry-standard thermal media — such as AUSI-05 (−80 °C to 220 °C) and AUSI-10 (−60 °C to 250 °C) — which meet ISO 6743-12 classification for synthetic heat-transfer oils. All wetted components contact stainless steel (SS316) or fluoropolymer-lined surfaces to ensure chemical compatibility with organic solvents, strong acids, and halogenated reagents. The unit complies with IEC 61000-6-2 (EMC immunity) and IEC 61000-6-4 (EMC emissions); optional ATEX Zone 1/21 certification packages are available for hazardous area deployment. For regulated environments, the system supports 21 CFR Part 11-compliant electronic records when paired with validated third-party data acquisition software.

Software & Data Management

While the TC5000 operates autonomously via its embedded PLC and touchscreen interface, it provides full interoperability with external laboratory information management systems (LIMS) and supervisory control platforms. All operational parameters — including setpoint history, actual bath temperature, pump speed, compressor status, and alarm events — are timestamped and stored internally (≥100,000 entries). Data export is supported via USB mass storage (CSV format) or Ethernet transfer using standard Modbus register mapping. Audit trails include user login ID, parameter modification time, and confirmation of safety interlock activation. Remote diagnostics and firmware updates can be performed securely over HTTPS-enabled network connections, ensuring continuity during GxP audits.

Applications

• Chemical process development: precise control of Grignard reactions, hydrogenations, and nitration steps requiring sub-zero initiation followed by controlled exotherm management
• Pharmaceutical manufacturing: temperature validation of lyophilization cycles, dissolution apparatus calibration (USP ), and stability chamber support
• Materials science: thermal cycling of composites during cure monitoring, dielectric property measurement at variable temperatures, and thermal expansion coefficient determination
• Automotive R&D: battery electrolyte conditioning for low-temperature performance testing, EV power electronics thermal soak simulation
• Academic research: kinetic modeling of enzyme-catalyzed reactions, phase behavior studies in ionic liquid systems, and high-temperature polymer degradation analysis

FAQ

What thermal fluids are recommended for operation at +250 °C?
AUSI-10 synthetic heat-transfer fluid (flash point ≥200 °C, boiling point ≈300 °C) is specified for continuous use up to +250 °C. Its oxidative stability exceeds 10,000 hours at 200 °C per ASTM D943.
Can the TC5000 integrate with a distributed control system (DCS)?
Yes — Modbus TCP over Ethernet enables native integration with Emerson DeltaV, Honeywell Experion, and Siemens PCS7 platforms using standard function code 03 (read holding registers) and 06 (write single register).
Is remote monitoring supported without proprietary software?
All telemetry data is accessible via standard Modbus registers; no vendor-specific drivers or licensing are required for integration into open-architecture SCADA environments.
What maintenance intervals are recommended for compressor oil and filter replacement?
Under continuous operation at rated load, the hermetic scroll compressor requires oil analysis every 4,000 operating hours and filter replacement every 8,000 hours — documented in the included maintenance logbook and aligned with ISO 15243 bearing life guidelines.
Does the TC5000 support external temperature feedback for cascade control?
Yes — the RS485 interface accepts input from up to two external PT100 sensors (configured as primary process variable or jacket temperature reference), enabling true cascade mode for reactor wall temperature compensation.