Anton Paar DMA 4002 / DMA 5002 / DMA 6002 Digital Oscillating U-Tube Density Meter
| Brand | Anton Paar |
|---|---|
| Origin | Austria |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Origin Category | Imported |
| Model | DMA 4002 / DMA 5002 / DMA 6002 |
| Instrument Type | Oscillating U-tube Densimeter |
| Instrument Class | Benchtop Laboratory Densimeter |
| Sample Type | Liquid |
| Density Range | 0 to 3 g/cm³ |
| Density Accuracy | ±0.00005 g/cm³ (DMA 4002), ±0.00001 g/cm³ (DMA 5002, 0–1.05 g/cm³ at 15–20 °C), ±0.000005 g/cm³ (DMA 6002, full range) |
| Temperature Range | 0 °C to 100 °C |
| Temperature Accuracy | ±0.02 °C (DMA 4002), ±0.01 °C (DMA 5002 & DMA 6002, 15–20 °C) |
| Density Repeatability (Std. Dev.) | 0.00001 g/cm³ (DMA 4002), 0.000003 g/cm³ (DMA 5002), 0.000001 g/cm³ (DMA 6002) |
| Density Resolution | 0.00001 g/cm³ (DMA 4002), 0.000005 g/cm³ (DMA 5002), 0.000001 g/cm³ (DMA 6002) |
| Minimum Sample Volume | 1 mL |
| Display | 10.1″ TFT WXGA (1280 × 800 px) PCAP Touchscreen |
| Compliance | ASTM D4052, D5002, D1250 |
Overview
The Anton Paar DMA 4002, DMA 5002, and DMA 6002 are high-precision benchtop digital density meters based on the oscillating U-tube principle—a well-established physical method defined in ISO 12185 and ASTM D4052. In this technique, a precisely machined borosilicate glass U-tube is electromagnetically excited into resonant oscillation; its natural frequency shifts linearly with the mass of the sample filling the tube. By measuring the oscillation period with sub-microsecond resolution and applying rigorous temperature-compensated calibration models, these instruments deliver traceable density values directly traceable to SI units. Designed for laboratories requiring metrological rigor across R&D, QC, and regulatory environments, the DMA series supports both routine analysis and advanced method development—especially where reproducibility at the sub-10 µg/cm³ level is essential.
Key Features
- U-Pulse Technology: Anton Paar’s proprietary pulse excitation method ensures stable, low-noise oscillation detection, minimizing damping effects from viscous or volatile samples and enabling exceptional long-term stability and inter-instrument comparability.
- ThermoBalance Compensation: Real-time thermal expansion correction applied to the U-tube structure and fluid column eliminates systematic drift caused by ambient or sample temperature gradients, ensuring accuracy across the full 0–100 °C operating range.
- FillingCheck Algorithm: Detects micro-bubbles or incomplete filling within seconds using dynamic oscillation waveform analysis—preventing erroneous measurements before data acquisition begins.
- U-View Visual Monitoring: Integrated high-resolution camera provides zoomable, time-stamped imaging of the measurement cell during filling and equilibration, supporting audit-ready documentation and troubleshooting.
- U-Dry Function: Enables user-triggered dry-purge cycles using inert gas, eliminating residual solvent traces between measurements—critical for high-purity solvents, pharmaceutical intermediates, or cross-contamination-sensitive workflows.
- Full-Range Viscosity Correction: Automatically applies viscosity-dependent period-to-density conversion using built-in reference models, extending valid measurement capability to liquids up to 20 mPa·s without external calibration.
Sample Compatibility & Compliance
The DMA series accommodates aqueous solutions, hydrocarbons, alcohols, acids, bases, polymers in solution, and ionic liquids—with wetted parts constructed exclusively from chemically inert borosilicate glass, PTFE, and ETFE. Each instrument is certified per AT 516420 B1 and calibrated using ISO 17034-accredited density reference materials. Full compliance includes ASTM D4052 (petroleum products), D5002 (crude oil), D1250 (petroleum measurement tables), ISO 12185 (crude oil and liquid petroleum products), USP <841> (density and specific gravity), and European Pharmacopoeia 2.2.5. Data integrity is assured via 21 CFR Part 11-compliant electronic records—including full audit trails, user authentication, and immutable measurement metadata stored locally and exportable via AP Connect software.
Software & Data Management
All models run on Anton Paar’s unified One Click™ operating system, featuring intuitive touchscreen navigation, guided workflows, and context-sensitive help. Up to 10,000 complete measurement records—including raw oscillation waveforms, U-View images, environmental sensor logs (temperature, pressure, humidity), and operator annotations—are retained onboard. AP Connect laboratory execution software enables centralized instrument management, method deployment, automated report generation (PDF/CSV/XLSX), and integration with LIMS or MES platforms. Calibration history, maintenance logs, and certificate traceability—including ISO/IEC 17025 accreditation statements—are embedded in every exported dataset.
Applications
These density meters serve as primary metrology tools across regulated and non-regulated sectors: quantification of ethanol concentration in beverages (per OIML R 22); API gravity and sulfur content estimation in petroleum refining; active pharmaceutical ingredient (API) purity verification via density deviation; battery electrolyte formulation control; quality release testing of surfactants, glycols, and specialty chemicals; and academic research involving thermophysical property modeling. The modular architecture supports seamless integration with optional modules for alcoholometry, refractometry, pH, turbidity, CO₂, and dissolved oxygen—enabling multi-parameter characterization from a single 1 mL sample under identical thermal conditions.
FAQ
What distinguishes the DMA 4002, DMA 5002, and DMA 6002 in terms of metrological performance?
The models differ primarily in density accuracy, repeatability, and temperature stability specifications—progressively optimized for increasing regulatory stringency and research-grade uncertainty requirements.
Can the DMA series measure samples with high volatility or low surface tension?
Yes—U-Dry purging, FillingCheck bubble detection, and optimized capillary filling protocols minimize evaporation artifacts and ensure reliable measurement of acetone, diethyl ether, refrigerants, and other volatile compounds.
Is external calibration required to maintain traceability?
No—each instrument ships with factory-applied calibration using NIST-traceable reference materials and includes documented ISO/IEC 17025 validation reports; periodic verification with certified standards is recommended per internal QA procedures.
How does the system handle temperature-sensitive samples during extended measurement sequences?
The integrated Peltier-controlled thermostat maintains setpoint stability within ±0.001 °C over time, while ThermoBalance dynamically corrects for thermal lag in both the sensor and sample matrix.
Are firmware updates and security patches available post-purchase?
Yes—Anton Paar provides validated firmware releases through AP Connect, including cryptographic signing, version rollback protection, and vulnerability remediation aligned with IEC 62443-4-2 cybersecurity guidelines for laboratory instrumentation.
