Xiatech C4000 Series Precision Circulating Bath Chiller/Heater

Overview

The Xiatech C4000 Series Precision Circulating Bath Chiller/Heater is an engineered thermal management system designed for high-accuracy temperature control in demanding laboratory and industrial R&D environments. Based on a dual-mode refrigeration–heating architecture with PID-controlled cascade regulation, the C4000 maintains stable thermal conditions across a broad operational range—from cryogenic cooling at −30 °C to high-temperature heating up to 200 °C—without requiring medium exchange. Its core function relies on forced convection via a high-flow, low-pulsation circulation pump (16 L/min), enabling precise heat transfer to external devices such as jacketed reactors, thermal conductivity analyzers, differential scanning calorimeters (DSC), viscometers, density meters, and spectrophotometers. The system’s ±0.01 °C temperature stability and 0.001 °C digital resolution meet stringent requirements for physical property characterization, material phase transition studies, and calibration traceability in ISO/IEC 17025-accredited laboratories.

Key Features

• High-stability temperature control: Achieves ±0.01 °C short-term stability (measured over 30 min at constant setpoint) under optimized ambient and load conditions.
• Wide operational range: Seamless transition between cooling and heating modes across −30 °C to 200 °C using environmentally compatible refrigerants and high-efficiency resistive heating elements.
• Modular bath volume options: Available in 10 L (C4100), 15 L (C4150), and 30 L (C4300) configurations, each with standardized flange dimensions and depth-to-volume ratios optimized for uniform thermal distribution and minimal stratification.
• Dual-circulation capability: Supports both internal bath recirculation and external closed-loop cooling/heating of auxiliary equipment via dedicated inlet/outlet ports with pressure-rated quick-connect fittings.
• USB-based real-time monitoring and control: Integrated USB 2.0 interface enables direct communication with host PCs running custom or third-party LabVIEW™, Python (PySerial), or MATLAB® applications for automated protocol execution and data logging.
• Multi-unit coordination: Software platform allows synchronized operation and comparative temperature trending across multiple C4000 units—ideal for parallel experimental setups requiring cross-bath correlation analysis.

Sample Compatibility & Compliance

The C4000 series accommodates a wide range of heat-transfer media—including water, water–glycol mixtures, silicone oils, and low-viscosity synthetic heat-transfer fluids—enabling application-specific optimization without hardware modification. All wetted components are constructed from corrosion-resistant stainless steel (304/316), PTFE-sealed fittings, and chemically inert bath liners, ensuring compatibility with mildly aggressive solvents and aqueous buffers. The system complies with IEC 61010-1:2010 for electrical safety in laboratory equipment and meets electromagnetic compatibility (EMC) requirements per EN 61326-1:2013. While not certified for medical device use, its temperature accuracy and repeatability support GLP-compliant thermal validation protocols and align with ASTM E74–22 (calibration of thermometers) and ISO 17025 clause 6.4.9 (equipment verification for temperature-dependent measurements).

Software & Data Management

Xiatech provides a native Windows-based temperature control application featuring real-time graphical display of bath temperature, setpoint deviation, and derivative trends (°C/min). Logged data is exported in CSV format with timestamp precision to 100 ms, supporting post-processing in statistical analysis tools. The software includes configurable alarm thresholds, automatic ramp–soak profiles, and audit-trail-enabled user access logs—facilitating compliance with FDA 21 CFR Part 11 when deployed in regulated QC/QA workflows. For integration into larger automation frameworks, the USB HID protocol exposes all instrument parameters via ASCII command-response syntax, enabling script-driven calibration verification, scheduled thermal cycling, and remote diagnostics.

Applications

• Thermal calibration of reference sensors (RTDs, thermistors, thermocouples) against NIST-traceable standards.
• Temperature-controlled material testing: coefficient of thermal expansion (CTE), thermal diffusivity, specific heat capacity (via DSC or adiabatic calorimetry).
• Stabilization of optical benches and interferometric systems sensitive to thermal drift.
• Process simulation: mimicking industrial reactor jacket temperatures during kinetic modeling and catalyst screening.
• Biological sample conditioning: maintaining precise incubation conditions for enzyme kinetics, protein denaturation assays, and cell culture equipment pre-conditioning.
• Viscometry and rheometry: providing isothermal environments for rotational and capillary viscometers operating under ASTM D445 or ISO 3104.

FAQ

What temperature stability specifications apply under external load conditions?
Stability of ±0.01 °C is validated under no-load static conditions. With external circulation (≤5 m tubing, ≤2 kW thermal load), typical stability remains within ±0.03 °C when using recommended heat-transfer fluids and proper insulation.
Is the C4000 suitable for use with flammable organic solvents?
Only non-flammable, high-flash-point media (e.g., silicone oil >200 °C flash point) are approved. Operation with ethanol, acetone, or other Class I flammable liquids voids warranty and violates IEC 61010 safety provisions.
Can the unit operate continuously at 200 °C?
Yes—continuous operation at maximum setpoint is supported provided ambient temperature remains ≤30 °C, relative humidity ≤50%, and ventilation clearance ≥10 cm on all sides.
Does the system support RS-232 or Ethernet connectivity?
No—only USB 2.0 is natively implemented. RS-232 or Ethernet interfaces require external USB-to-serial/Ethernet adapters, which are not validated by Xiatech for timing-critical control loops.
How often does the refrigerant require servicing?
Under normal operating conditions and proper maintenance (annual filter inspection, condenser cleaning), the sealed refrigeration circuit requires no refrigerant replenishment over a 10-year service life.