VACUUBRAND CVC 3000 Vacuum Controller

Overview

The VACUUBRAND CVC 3000 Vacuum Controller is an intelligent, microprocessor-based process regulation system engineered for precise, repeatable, and fully automated vacuum control in laboratory-scale evaporation, concentration, distillation, and freeze-drying applications. It operates on the principle of real-time feedback regulation using a high-stability ceramic capacitive pressure sensor—based on alumina (Al₂O₃) diaphragm technology—to deliver gas-independent absolute pressure measurement across a wide dynamic range (1080 mbar down to 0.1 mbar). Unlike thermal conductivity or Pirani-based gauges, this sensor exhibits minimal drift, excellent chemical resistance, and intrinsic insensitivity to gas composition, making it suitable for use with solvents, acids, bases, and reactive vapors commonly encountered in organic synthesis, pharmaceutical development, and analytical sample preparation. The controller integrates seamlessly with VACUUBRAND’s VARIO® variable-speed vacuum pumps via the proprietary VACUU·BUS® digital interface, enabling closed-loop, adaptive control without manual intervention. Its architecture supports both discrete two-point control (via external solenoid valves) and continuous proportional control (with VARIO® pumps), ensuring optimal process stability, energy efficiency, and gentle handling of thermolabile compounds.

Key Features

• Integrated ceramic capacitive vacuum sensor with ±1 mbar accuracy (calibrated, isothermal conditions), offering long-term stability and immunity to gas-type dependency
• Intuitive graphical user interface with text-based menu navigation in 14 selectable languages and ergonomic rotary encoder (flywheel knob) for tactile, glance-free operation
• Onboard programmable logic supporting up to 10 customizable multi-step processes—each step configurable for target pressure, dwell time, pump speed, valve actuation (vacuum, vent, refrigerant), and automatic evaporation mode
• VACUU·BUS® plug-and-play interface enables automatic recognition and configuration of peripheral devices including VARIO® pumps, vacuum/vent/refrigerant valves, liquid-level sensors, high-vacuum gauges, and Peltronic® condensers
• Real-time parameter adjustment during active vacuum control—including setpoints, ramp rates, hold durations, and valve timing—without process interruption
• Built-in vent valve (DN 4–5 hose nozzle) and dual vacuum interfaces (10/8 mm PTFE + DN 6/10 mm hose nozzle; KF DN 16 flange optional) for flexible system integration
• RS-232C serial port for bidirectional communication with PCs, enabling remote monitoring, data logging, and integration into LIMS or ELN environments

Sample Compatibility & Compliance

The CVC 3000 is compatible with a broad spectrum of volatile and semi-volatile samples, including aqueous solutions, organic solvents (e.g., acetone, ethanol, ethyl acetate), acid/base mixtures, and heat-sensitive biomolecules. Its chemically inert ceramic sensor and fluoropolymer-sealed interfaces prevent corrosion or adsorption artifacts during prolonged exposure to aggressive media. From a regulatory standpoint, the device supports GLP-compliant workflows through audit-trail-capable parameter logging (when paired with compatible software), time-stamped event records, and user-accessible calibration history. While not inherently 21 CFR Part 11 compliant out-of-the-box, its RS-232 interface and deterministic control logic facilitate integration into validated systems where electronic signatures, role-based access, and data integrity controls are implemented at the host software layer. It meets CE marking requirements per EU Directive 2014/30/EU (EMC) and 2014/35/EU (LVD), and conforms to IEC 61000-6-2/6-3 for industrial electromagnetic immunity and emissions.

Software & Data Management

The CVC 3000 operates autonomously without mandatory PC software; however, its RS-232C interface allows full command-line control via ASCII protocol (VACUUBRAND’s documented SCPI-like syntax), enabling custom scripting in Python, LabVIEW, or MATLAB for automated batch processing. Optional VACUUBRAND PC software (e.g., Vacuubrand ControlCenter) provides graphical real-time pressure trending, multi-channel data export (CSV, TXT), and secure storage of method files with user-defined metadata. All programmed processes—including pressure profiles, valve states, and pump speed curves—are stored non-volatilely in internal memory and retain settings after power cycling. Firmware updates are performed via serial connection and verified with checksum validation to ensure operational integrity.

Applications

The CVC 3000 is routinely deployed in R&D and QC laboratories for controlled solvent removal from reaction mixtures, concentration of protein solutions prior to LC-MS analysis, gentle drying of nanomaterial dispersions, and reproducible rotary evaporation under optimized vacuum gradients. In pharmaceutical settings, it supports ICH Q5C stability studies requiring defined residual moisture levels, while in academic labs, it enables precise pressure-controlled crystallization or sublimation experiments. When combined with VARIO® pumps and Peltronic® cold traps, it forms a complete, self-regulating vacuum manifold for parallel sample processing—reducing operator variability and improving inter-batch consistency. Its ability to maintain constant vapor pressure during distillation improves fraction purity and minimizes bumping or foaming in low-boiling-point separations.

FAQ

Can the CVC 3000 be used with non-VACUUBRAND vacuum pumps?
Yes—it supports analog 0–10 V or 4–20 mA pump speed inputs and digital relay outputs for third-party pumps, though full VACUU·BUS® functionality (e.g., auto-ID, firmware-aware diagnostics) is exclusive to VACUUBRAND devices.
Is the built-in sensor field-replaceable?
No—the ceramic capacitive sensor is permanently integrated and calibrated at the factory; replacement requires return to an authorized service center.
Does the controller support absolute or relative pressure measurement?
It performs absolute pressure measurement by default; when connected to an external VSK 3000 reference sensor, it can compute differential pressure for applications requiring vacuum level referencing against ambient or process-specific baselines.
What is the maximum number of simultaneous peripheral devices supported via VACUU·BUS®?
Up to eight VACUU·BUS®-enabled devices may be daisy-chained on a single bus, with automatic address assignment and error detection.
Are calibration certificates traceable to national standards available?
Yes—factory calibration reports (ISO/IEC 17025-accredited, where applicable) and NIST-traceable certificates can be ordered separately with the unit or requested post-purchase.