LAUDA ECO RE 2050 S Refrigerated Circulating Bath with External Loop

Overview

The LAUDA ECO RE 2050 S is a high-precision, refrigerated circulating bath engineered for demanding laboratory applications requiring stable thermal control across an exceptionally wide temperature range—from –25 °C to +200 °C. Built on LAUDA’s proprietary SmartCool collaborative cooling architecture, the unit dynamically modulates compressor output and fan speed in real time to match thermal load, minimizing energy consumption while maintaining ±0.02 °C stability under steady-state conditions. Its integrated dual-mode circulation system supports both internal bath homogenization and external process cooling or heating via a high-flow, six-stage Vario pump (max. 22 L/min at 0.6 bar). The stainless-steel bath vessel (300 × 350 × 160 mm) features a 140 mm usable depth and accommodates 14.0–20.0 L of heat-transfer fluid—compatible with water, silicone oil, glycol/water mixtures, and other non-corrosive media rated for Class III safety per IEC 61010-1. Designed and manufactured in Germany, the RE 2050 S meets stringent EU environmental and electrical safety requirements, including Regulation (EU) No 517/2014 on fluorinated greenhouse gases.

Key Features

• Full-electronic PID controller with auto-tuning capability and programmable overtemperature protection (T_max) via intuitive soft-key interface
• LAUDA Silver immersion thermostat with monochrome graphical LCD—simultaneously displays setpoint, actual bath temperature, and pump status
• Vario pump with six adjustable flow stages; enables precise modulation of internal mixing and external loop pressure without manual valve intervention
• SmartCool adaptive cooling system: automatically balances compressor load and condenser airflow to optimize efficiency and extend component life
• Integrated 20-segment programmable timer (1 program, up to 20 steps) supporting ramp-hold profiles for automated thermal protocols
• USB port standard; optional field-upgradable interface modules including analog (0–10 V / 4–20 mA), digital I/O, RS-232/485, Profibus DP, Ethernet/IP, and Pt100/LiBus for external cascade control
• Stainless-steel bath with rear-mounted drain valve and molded plastic quick-connect pump fittings (13 mm ID)
• Class III safety certification per IEC 61010-1: suitable for use with flammable and non-flammable heat-transfer fluids
• Compliant with EU F-Gas Regulation (EU) No 517/2014; uses R-134a refrigerant (GWP = 1430) at 0.075 kg charge

Sample Compatibility & Compliance

The RE 2050 S supports a broad spectrum of sample vessels and external apparatus—including rotary evaporators, calorimeters, spectrophotometer cells, reaction blocks, and jacketed reactors—via its externally accessible inlet/outlet ports (G¼” BSP). Its temperature stability (±0.02 °C) and low thermal drift enable reproducible validation of viscosity standards (ASTM D445), polymer melt behavior (ISO 1133), and pharmaceutical dissolution testing (USP ). The device conforms to ISO/IEC 17025 calibration traceability requirements when operated within specified ambient conditions (5–40 °C). For regulated environments, optional firmware upgrades support audit-trail logging and electronic signature compliance per FDA 21 CFR Part 11 when paired with LAUDA’s LabSoft software suite.

Software & Data Management

While standalone operation requires no PC, the RE 2050 S is fully compatible with LAUDA LabSoft v4.x—a Windows-based platform enabling remote monitoring, multi-device synchronization, and GLP-compliant data export (CSV, PDF, XML). LabSoft records timestamped temperature, pump speed, cooling power, and alarm events with configurable sampling intervals (1 s to 60 min). Optional Ethernet or RS-485 modules allow integration into SCADA or LIMS systems using Modbus RTU/TCP protocols. All firmware updates are delivered via USB stick with cryptographic signature verification to ensure integrity and version control.

Applications

• Calibration of temperature-sensitive sensors (RTDs, thermistors, IR cameras) across extended ranges
• Thermal conditioning of optical components during interferometric alignment
• Controlled-rate cooling/heating in polymer crystallization and phase-transition studies
• Stabilized thermal environment for electrochemical cells and fuel cell test rigs
• Preconditioning of reference materials prior to rheological or DMA analysis
• Supporting ASTM D341 viscosity–temperature correlation measurements
• Long-duration stability testing of active pharmaceutical ingredients (APIs) under ICH Q1A(R2) guidelines

FAQ

What is the minimum and maximum recommended fill volume for the bath?
The stainless-steel bath operates optimally between 14.0 L (minimum) and 20.0 L (maximum) of compatible heat-transfer fluid.
Can the RE 2050 S be used with silicone oil at 200 °C without degradation?
Yes—when filled with high-thermal-stability silicone oils (e.g., Dow Corning 200 Fluid, 50 cSt), continuous operation at 200 °C is supported; bath temperature uniformity remains within ±0.05 °C across the working zone.
Is external temperature feedback supported for cascade control?
Yes—via optional Pt100/LiBus module, users can connect an external probe to implement process-temperature feedback loops independent of bath sensor readings.
Does the unit include documentation for IQ/OQ qualification?
Factory-provided IQ/OQ templates compliant with GMP Annex 15 and ISO 13485 are available upon request; installation verification includes leak testing, temperature mapping (9-point grid), and stability verification per EURACHEM/CITAC Guide CG4.
How often does the R-134a refrigerant require servicing?
Under normal operation and proper maintenance (condenser coil cleaning every 6 months), the sealed refrigeration circuit requires no refrigerant replenishment over its rated service life of ≥15,000 operating hours.