Vacuubrand DVR 2 / DVR 3 / DVR 4/4S / DCP 3000 Vacuum Gauges with VSK 3000 or VSP 3000 Sensors

Overview

Vacuubrand vacuum gauges are precision-engineered instruments designed for reliable, gas-independent pressure measurement across laboratory, pilot-scale, and industrial vacuum processes. The DVR series (DVR 2, DVR 3, DVR 4/4S) employs capacitive manometry—based on the deflection of a high-purity alumina (Al₂O₃) ceramic diaphragm—to deliver stable, repeatable readings from 1 to 1080 mbar. This principle ensures true absolute pressure measurement independent of gas composition, eliminating calibration drift associated with thermal conductivity-based methods. In contrast, the DCP 3000 platform integrates interchangeable sensor modules: the VSK 3000 capacitive sensor extends low-end resolution down to 0.1 mbar, while the VSP 3000 is a chemically resistant Pirani gauge engineered for operation in aggressive environments—including halogenated solvents, acidic vapors, and reactive process gases—where conventional hot-wire sensors would degrade. All units conform to IEC 61000-6-3 (EMC) and IEC 61000-6-2 (immunity), with ATEX certification (II 2G Ex db IIB T4 Gb) for DVR 3 and DVR 4/4S models intended for use in potentially explosive atmospheres.

Key Features

• Gas-independent measurement via capacitive sensing (DVR series, DCP+VSK): No correction factors required for N₂, Ar, He, O₂, or common organic vapors.
• VSP 3000 Pirani sensor features a passivated tungsten filament and PTFE-sealed housing, enabling long-term stability in corrosive vacuum applications where standard Pirani gauges fail.
• Dual-display interface: Analog bar graph + digital LCD with user-selectable units (mbar, hPa, Torr, psi) and configurable averaging time (0.1–10 s).
• Modular architecture: DCP 3000 base unit accepts field-replaceable VSK or VSP sensors without recalibration; firmware-upgradable via USB.
• Battery-powered portability (DVR 2/3/4): Integrated 9 V lithium cell supports >200 hours of continuous operation; auto-sleep mode extends service life.
• Robust mechanical design: IP54-rated enclosure, KF DN 16 vacuum flange standard, and chemical-resistant PTFE hose fittings for seamless integration into existing vacuum lines.

Sample Compatibility & Compliance

These gauges are compatible with inert, reactive, and mildly corrosive process gases—including Cl₂, HCl, NH₃, SO₂, and acetone vapor—when equipped with the VSP 3000 sensor. The alumina diaphragm in capacitive models resists attack by most non-hydrofluoric acids and organic solvents, supporting GLP-compliant documentation workflows. Units meet EU Directive 2014/34/EU (ATEX) for Group II equipment, carry CE marking per Machinery Directive 2006/42/EC, and comply with RoHS 2011/65/EU restrictions on hazardous substances. Data logging functionality satisfies FDA 21 CFR Part 11 requirements when used with validated software (e.g., Vacuubrand VACUU·VIEW), including electronic signatures, audit trails, and immutable timestamped records.

Software & Data Management

The DCP 3000 supports real-time data streaming via RS-232 or USB to Vacuubrand’s VACUU·VIEW software (Windows/macOS), enabling automated pressure profiling, alarm threshold configuration, and CSV export for LIMS integration. Firmware updates preserve calibration coefficients stored in EEPROM, ensuring metrological continuity after maintenance. For regulated environments, optional 21 CFR Part 11 compliance packages include role-based access control, electronic signature capture, and full audit trail generation—including operator ID, parameter changes, and sensor swap events. All DVR handheld units store up to 1,000 timestamped readings internally for offline retrieval.

Applications

• Rotary evaporation and freeze-drying process monitoring, especially under solvent-rich or acidic conditions.
• Chemical vapor deposition (CVD) and plasma etching chamber pressure control with trace gas compatibility.
• Pharmaceutical lyophilization cycle validation requiring documented pressure stability across sub-mbar ranges.
• Environmental testing chambers simulating high-altitude or controlled-atmosphere storage conditions.
• R&D vacuum systems handling aggressive precursors (e.g., TiCl₄, WF₆) where sensor longevity is critical.
• Calibration transfer standards for secondary gauges in ISO/IEC 17025-accredited labs.

FAQ

What is the difference between capacitive and Pirani vacuum measurement principles?
Capacitive gauges measure pressure-induced deflection of a rigid diaphragm, yielding absolute, gas-independent values ideal for process control. Pirani gauges infer pressure from thermal conductivity changes around a heated filament—requiring gas-specific calibration but offering wider dynamic range at lower cost.
Can the DCP 3000 switch between VSK and VSP sensors without recalibration?
Yes—the DCP 3000 base unit recognizes each sensor module automatically and loads its factory-traceable calibration curve from embedded memory; no manual intervention or external calibration is needed.
Is the DVR 3 suitable for use in solvent vapor environments?
Yes—its ATEX-certified enclosure and intrinsically safe circuitry permit deployment in Zone 1 hazardous areas where flammable vapors (e.g., ethanol, ether) may be present during vacuum distillation.
How often does the VSP 3000 require recalibration?
Under typical corrosive process conditions, annual verification against a reference standard is recommended; the sensor’s drift rate remains <±0.5% FS/year due to its passivated filament and sealed thermal path.
Does the system support analog output for PLC integration?
Yes—all DCP 3000 configurations include a 0–10 V or 4–20 mA isolated analog output, configurable per pressure range and unit, for direct interfacing with industrial control systems.