LAUDA Universa Pro Refrigerated Circulating Bath
| Brand | LAUDA |
|---|---|
| Origin | Germany |
| Model | Universa Pro Refrigerated Circulator |
| Instrument Type | Constant-Temperature Bath |
| Circulation Mode | Internal & External |
| Temperature Control | Heating & Cooling |
| Bath Volume | 1.8 – 16.5 L |
| Temperature Range | −45 °C to 200 °C |
| Temperature Stability | ±0.02 °C |
| Input Power | 800 W |
Overview
The LAUDA Universa Pro Refrigerated Circulating Bath is an engineered precision temperature control system designed for demanding laboratory and pilot-scale applications requiring high stability, wide operational range, and seamless integration into modern digital workflows. Based on LAUDA’s proven thermodynamic architecture, the Universa Pro utilizes a dual-mode refrigeration–heating system with electronically commutated (EC) compressors and PID-controlled resistive heating elements to deliver rapid thermal response and exceptional long-term stability. Its core operating principle relies on forced convection via a high-efficiency magnetic-drive circulation pump, ensuring uniform temperature distribution across the entire bath volume — critical for reproducible sample conditioning in calorimetry, material testing, reaction kinetics, and analytical instrument temperature management. The device complies fully with CE marking requirements and is certified by KEMA (now DEKRA) to EN 61000-6-3 (EMC) and EN 61000-6-2 (immunity), meeting essential safety and electromagnetic compatibility standards for use in regulated environments.
Key Features
- Wide operational temperature range from −45 °C to +200 °C, enabled by optimized refrigerant circuit design using natural refrigerants (R744 / CO₂ or R290 / propane, GWP < 100)
- Temperature stability of ±0.02 °C at setpoint, verified under ISO/IEC 17025-accredited calibration conditions
- Dual circulation mode: internal recirculation for bath homogeneity; external loop capability for jacketed reactors, viscometers, or spectrophotometer cells
- Digital control architecture with built-in Ethernet and USB interfaces as standard — no optional modules required for network connectivity
- Energy-efficient EC motor technology reduces power consumption by up to 35% compared to conventional fixed-speed compressors
- Modular mechanical interface: standardized bath opening dimensions and electrical connectors allow interchangeability with Universa ECO and MAX units
- Integrated Pt100 sensor with 4-wire measurement circuitry and optional LiBus-compatible bus interface for multi-device synchronization
Sample Compatibility & Compliance
The Universa Pro accommodates a broad spectrum of sample vessels and external systems through its configurable bath geometry and external loop porting (G¼” BSP quick-connect fittings). Compatible accessories include LAUDA-certified centrifuge tube racks, universal test tube holders, insulated bath covers with integrated sensor ports, and calibration-ready cylindrical reference inserts traceable to NIST standards. All models conform to IEC 61010-1:2010 for laboratory equipment safety and support GLP/GMP-compliant operation through audit-trail-capable firmware logging (optional LAUDA LIVE cloud integration). While not intrinsically rated for hazardous area use, the unit meets ATEX Category 3G (Zone 2) compatibility when operated outside classified zones per EN 60079-0.
Software & Data Management
Control and monitoring are performed via LAUDA Command — a cross-platform application supporting Windows, macOS, iOS, and Android. The software enables real-time parameter adjustment, scheduled ramp/soak profiles, and data export in CSV or XML formats compliant with ASTM E2937-22 (digital recordkeeping for thermal validation). Firmware supports TLS 1.2 encryption for all remote communications, and role-based access control (RBAC) ensures compliance with FDA 21 CFR Part 11 requirements when used in pharmaceutical QC/QA settings. Optional LAUDA LIVE cloud service provides predictive maintenance alerts powered by edge-based AI analytics, detecting anomalies such as pump cavitation onset or refrigerant charge drift before performance degradation occurs.
Applications
- Pharmaceutical stability testing per ICH Q1A(R3) guidelines requiring precise, prolonged temperature exposure
- Calibration of thermocouples, RTDs, and infrared sensors in metrology labs
- Thermal conditioning of optical components during interferometric measurements
- Temperature control for HPLC column ovens, rheometers, and differential scanning calorimeters (DSC)
- Process simulation in chemical engineering education and pilot plant development
- Material property evaluation including coefficient of thermal expansion (CTE) and glass transition (Tg) determination
FAQ
What is the maximum external loop pressure rating for the Universa Pro?
The external circulation port is rated for continuous operation up to 2.5 bar (36 psi) static pressure, compatible with standard laboratory peristaltic and diaphragm pumps.
Does the Universa Pro support RS-232 or Modbus communication protocols?
No — native communication is limited to TCP/IP (Ethernet) and USB CDC ACM class. RS-232 or Modbus functionality requires third-party protocol gateways configured externally.
Can the bath be operated without liquid in the reservoir?
No. Dry operation will trigger immediate thermal shutdown and may cause irreversible damage to the heater block and pump assembly.
Is the temperature sensor calibrated at the factory?
Yes — each unit ships with a factory calibration certificate referencing PTB-traceable standards, valid for 12 months under normal operating conditions.
How is refrigerant servicing performed during maintenance?
Refrigerant circuits are sealed and non-serviceable in the field. Only authorized LAUDA Service Centers may perform recharge or leak repair using certified recovery equipment and refrigerant handling licenses.
