Tongzhou Weipu T1 Dedicated Circulating Chiller for Parallel Evaporators

Overview

The Tongzhou Weipu T1 Dedicated Circulating Chiller is an integrated, benchtop-compatible refrigeration system engineered specifically to support parallel evaporators and other low-to-medium thermal-load laboratory instruments. It operates on a closed-loop phase-change refrigeration cycle using an environmentally compliant refrigerant (R134a or equivalent, compliant with EU F-Gas Regulation No. 517/2014), delivering precise, stable temperature control across a wide operational range from −20 °C to 95 °C. Unlike generic chillers, the T1 features application-tuned thermal management logic—including optimized pump head, flow rate calibration, and thermal inertia compensation—designed to maintain consistent coolant delivery under dynamic load conditions typical of parallel solvent evaporation workflows. Its compact footprint and flexible placement options (desktop or under-bench) enable seamless integration into crowded analytical labs without compromising accessibility or serviceability.

Key Features

• Integrated design with sealed refrigeration circuit, corrosion-resistant stainless-steel reservoir, and low-noise centrifugal circulation pump (flow rate: 12–18 L/min, adjustable via PID-controlled variable-speed drive)
• Precision temperature regulation with ±0.1 °C stability over full range, achieved through dual-sensor feedback (reservoir + outlet), adaptive PID algorithm, and insulated reservoir housing
• Wide operating range (−20 °C to 95 °C) enabled by multi-stage compressor staging and intelligent defrost management; supports both cryogenic condensation and high-temperature reflux applications
• CE-certified electrical architecture compliant with EN 61000-6-3 (EMC) and EN 61000-6-2 (immunity); universal power input (100–240 VAC, 50/60 Hz) with automatic voltage recognition
• Open-bath reservoir configuration allows direct use as a low-volume thermostatic bath (e.g., for enzyme incubation or cold-trap conditioning), with optional lid and immersion probe mounting kit
• Front-panel LCD interface with real-time display of setpoint, actual temperature, flow status, refrigeration load %, and fault codes; USB port for firmware updates and diagnostic logging

Sample Compatibility & Compliance

The T1 chiller is validated for continuous-duty operation with parallel evaporator systems requiring stable coolant supply at flow rates ≥10 L/min and ΔT ≤15 °C across standard solvent evaporation protocols (e.g., ethyl acetate, methanol, dichloromethane). It meets ISO 17025-relevant environmental control requirements for accredited laboratories and supports GLP/GMP-compliant workflows through configurable audit trail logging (via optional software module). All materials in fluid contact—reservoir, tubing, pump head, and heat exchanger—are chemically inert (316L SS, EPDM seals, borosilicate glass sight gauge) and compatible with common organic solvents and aqueous buffers. The unit carries CE marking per Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU, and its refrigerant charge complies with EPA SNAP Program criteria for laboratory equipment.

Software & Data Management

While the T1 operates autonomously via its embedded controller, optional Ethernet/Wi-Fi connectivity enables remote monitoring and parameter adjustment through Tongzhou Weipu’s LabLink™ Web Interface (v3.2+). This interface supports role-based access control, real-time graphing of temperature/flow trends, export of CSV-formatted logs (timestamped, UTC-aligned), and integration with LabVantage, Thermo Fisher SampleManager, or custom LIMS via RESTful API. Audit trails record all setpoint changes, manual overrides, and alarm events with user ID and timestamp—meeting FDA 21 CFR Part 11 requirements when paired with institutional electronic signature policy. Firmware updates preserve calibration constants and user-defined presets across versions.

Applications

• Primary cooling source for parallel evaporators (e.g., Biotage® TurboVap®, Genevac® miVac, Sotax® EV400), maintaining condenser temperatures ≤5 °C during high-throughput sample concentration
• Thermal stabilization of UV-Vis spectrophotometer accessories, CCD detectors, and laser sources requiring sub-ambient thermal anchoring
• Coolant supply for microcalorimeters, DSC instruments, and automated titrators where thermal drift must remain <0.05 °C/hour
• Low-temperature reaction control in small-scale synthesis (e.g., Grignard, lithiation) using external jacketed reactors (max. 2 L volume)
• Support for vacuum systems: cooling of diffusion pump forelines and cold traps in molecular distillation or rotary evaporation setups

FAQ

Is the T1 compatible with non-Tongzhou Weipu parallel evaporators?
Yes—the T1 uses industry-standard 1/4″–3/8″ BSP quick-connect fittings and delivers stable flow/pressure profiles aligned with ISO 8573-1 Class 4 compressed air quality equivalency for coolant circuits.
Can the reservoir be filled with ethylene glycol/water mixtures?
Yes; the system supports aqueous glycol solutions up to 30% v/v for enhanced low-temperature stability down to −30 °C (requires recalibration of temperature sensors per ASTM E74–22 Annex A3).
What maintenance intervals are recommended?
Compressor oil inspection every 12 months; refrigerant leak check annually per ISO 5149-2; reservoir cleaning and filter replacement every 6 months under continuous operation.
Does the T1 support external temperature feedback control?
Yes—via 0–10 V analog input (±0.5% FS accuracy) accepting signals from external Pt100 or thermistor probes mounted on the target instrument.
How is calibration traceability ensured?
Each unit ships with NIST-traceable calibration certificate (temperature and flow) issued by CNAS-accredited lab (ISO/IEC 17025:2017), valid for 12 months from date of manufacture.