Titan HLD-35S Integrated Dynamic High-Low Temperature Circulating Chiller

Overview

The Titan HLD-35S is an integrated dynamic high-low temperature circulating chiller engineered for precision thermal control in demanding laboratory and industrial R&D environments. Utilizing a dual-mode refrigeration-heating system with cascade compressor architecture and electric resistance heating, the unit delivers seamless, bidirectional temperature regulation across an exceptionally wide operational span—from –45 °C to +250 °C—without requiring external heat transfer fluids or auxiliary equipment. Its design adheres to fundamental thermodynamic principles of closed-loop liquid circulation, where temperature-stabilized silicone oil or water-glycol mixtures are pumped under controlled pressure and flow to external process loads (e.g., reactor jackets, spectrometer cells, material testing stages). This enables active thermal management of exothermic/endothermic reactions, calibration of temperature-sensitive sensors, and stabilization of optical or electronic subsystems during long-duration experiments.

Key Features

• Integrated dual-function architecture: single-unit operation combining high-capacity refrigeration (3500 W) and rapid resistive heating (6000 W), eliminating need for separate hot/cold sources
• Air-cooled condensing system with intelligent fan speed modulation—no facility water connection required, suitable for standard lab utility infrastructure
• High-stability temperature control with ±0.1 °C fluctuation tolerance, achieved via PID-controlled dual-stage compressors and real-time PT100 feedback from both reservoir and outlet lines
• Robust circulation system featuring a stainless-steel pressure-rated pump delivering up to 6 bar head pressure and 60 L/min flow rate—compatible with high-backpressure applications including jacketed reactors and inline viscometers
• 10-liter insulated reservoir with level sensor, leak detection circuitry, and overtemperature/overpressure safety interlocks compliant with IEC 61000-6-2 and IEC 61000-6-4 electromagnetic compatibility standards
• Continuous-duty rating validated per ISO 5171 for uninterrupted operation over 72-hour test cycles under full thermal load

Sample Compatibility & Compliance

The HLD-35S supports a broad range of heat transfer media—including deionized water, 30–50% aqueous glycol solutions, and low-viscosity silicone oils (e.g., DC200 series)—enabling compatibility with diverse sample vessels and external instrumentation interfaces. Its fluid path components are constructed from electropolished 316 stainless steel, EPDM seals, and borosilicate glass sight gauges to ensure chemical resistance against common solvents and corrosion inhibitors. The unit conforms to CE marking requirements under the EU Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU. It is designed to support GLP-compliant workflows through configurable logging intervals, user-accessible calibration certificates traceable to NIM (National Institute of Metrology, China), and optional audit-trail-enabled firmware for 21 CFR Part 11 readiness.

Software & Data Management

Equipped with an embedded 5.7-inch TFT touchscreen HMI running a deterministic real-time OS, the HLD-35S provides intuitive local control with programmable ramp-soak profiles, multi-step temperature sequences, and real-time graphical display of inlet/outlet temperatures, flow rate, and compressor duty cycle. RS485 Modbus RTU and Ethernet TCP/IP interfaces enable integration into centralized LabVantage or Siemens Desigo CCMS platforms. Optional TitanLink PC software (Windows/Linux) supports data export in CSV and HDF5 formats, alarm history archiving, remote parameter adjustment via TLS-secured API, and automated report generation aligned with ISO/IEC 17025 documentation requirements.

Applications

• Temperature-dependent characterization of polymers, composites, and phase-change materials using DSC, TMA, and DMA systems
• Thermal conditioning of laser cavities, CCD detectors, and interferometric optics in metrology labs
• Process simulation for pharmaceutical freeze-drying cycles and crystallization kinetics studies
• Calibration of platinum resistance thermometers (PRTs), thermocouples, and infrared pyrometers across extended ranges
• Stabilization of electrochemical cells and battery testing modules during charge/discharge cycling
• Support of ASTM D341 viscosity-temperature correlation measurements and ISO 29383 thermal shock testing protocols

FAQ

What heat transfer fluids are recommended for operation below –20 °C?
For sub-zero operation down to –45 °C, we recommend 50% propylene glycol/water or certified low-temperature silicone oils (e.g., Dow Corning DC-200 Fluid, viscosity grade 100 cSt at 25 °C). Ethylene glycol is not advised due to oxidation instability at elevated temperatures.
Can the HLD-35S maintain ±0.1 °C stability while delivering 60 L/min at 250 °C?
Yes—stability specification is verified under maximum flow and thermal load conditions per Titan’s internal test protocol TP-HLD-03, which replicates worst-case jacket thermal mass and ambient drift scenarios.
Is remote monitoring supported without additional hardware?
Yes—the built-in Ethernet port supports SNMP v3 and Modbus TCP natively; no gateway or converter is required for integration with existing networked lab infrastructure.
Does the unit include factory calibration documentation?
Each unit ships with a NIM-traceable calibration certificate covering temperature accuracy (±0.05 °C at key setpoints), flow rate (±2%), and pressure output (±0.2 bar), valid for 12 months from date of shipment.