DahoMeter DA-300M Universal Solid Density Analyzer with DIN/Akron Abrasion Integration
| Brand | DahoMeter |
|---|---|
| Origin | Guangdong, China |
| Model | DA-300M109 |
| Instrument Type | Laboratory Benchtop Buoyancy-Based Density Meter |
| Sample Type | Solids (Rubber, Elastomers, Polymers, Composites, Ceramics, Metals, Powders) |
| Density Range | 0.001–99.999 g/cm³ |
| Density Resolution | 0.001 g/cm³ |
| Temperature Range | 0.0–100.0 °C |
| Minimum Sample Mass | 0.005 g |
| Maximum Capacity | 300 g |
| Measurement Medium | Water or User-Defined Liquid |
| Compliance | ASTM D297, GB/T 533, GB/T 9867, DIN 53516, ISO 4649, GB/T 1689, ISO 1817 |
| Data Output | RS-232C interface |
| Additional Functions | DIN Abrasion Volume, Akron Abrasion Loss, ARI Index, Volume Expansion Ratio, Foaming Ratio, Mass/Volume Change Rate, Binary Mixture Composition Estimation, Pass/Fail Auto-Judgment |
Overview
The DahoMeter DA-300M Universal Solid Density Analyzer is an engineered benchtop instrument designed for high-reproducibility density determination of solid materials using Archimedean buoyancy principles. It operates in accordance with internationally recognized test standards—including ASTM D297 (rubber density), ISO 4649 and DIN 53516 (abrasion resistance correlation), GB/T 533 (vulcanized rubber), and ISO 1817 (fluid resistance)—making it suitable for quality control laboratories, R&D centers, and materials certification facilities across rubber, polymer, footwear, automotive, aerospace, and advanced ceramics industries. Unlike conventional pycnometers or digital balances requiring manual calculation, the DA-300M integrates a precision dual-mode weighing system (air + immersion) with real-time fluid-density compensation algorithms to deliver direct-read density values at 0.001 g/cm³ resolution. Its measurement architecture supports both standard water-based immersion and alternative liquid media—enabling accurate density evaluation of porous, hydrophobic, or low-density foams when calibrated against known reference fluids.
Key Features
- Free-Flip aluminum measurement platform with integrated large-capacity transparent corrosion-resistant water tank—eliminates lid-lifting steps and reduces operator-induced error
- Automated zero-tracking and overload protection with audible alarm; configurable density upper/lower limits for pass/fail judgment per batch or specification
- Simultaneous computation of auxiliary physical parameters: DIN abrasion volume (cm³), Akron abrasion loss, ARI abrasion index, volumetric expansion ratio, foaming ratio, and mass/volume change rate
- Binary mixture composition estimation algorithm—calculates approximate weight percentage of two-component systems (e.g., rubber-filler composites) based on measured density and known constituent densities
- Temperature-compensated operation: user-definable medium temperature and fluid density settings, including options for water, ethanol, or custom calibration liquids
- RS-232C serial interface for seamless integration with laboratory information management systems (LIMS), statistical process control (SPC) software, or external printers (e.g., optional DE-40 thermal printer)
- Dual-purpose accessory kit: includes dedicated fixtures for granular powders (true density via liquid displacement), floating samples (sinker-assisted method), and irregular solids (mesh basket configuration)
Sample Compatibility & Compliance
The DA-300M accommodates a broad spectrum of solid materials—from elastomeric compounds (natural/synthetic rubber, TPU, silicone) and thermoplastic polymers to sintered metals, technical ceramics, mineral aggregates, and composite laminates. Its 300 g capacity and 0.005 g minimum detectable mass enable reliable analysis of small-format components (e.g., O-rings, gaskets, cable insulation fragments) as well as high-density alloys and tungsten carbide specimens. All measurement protocols adhere to GLP-aligned operational practices, supporting audit-ready documentation through timestamped data export and configurable user-access levels. The instrument satisfies functional requirements outlined in FDA 21 CFR Part 11 for electronic records when deployed with validated LIMS connectivity and access-controlled firmware.
Software & Data Management
While the DA-300M operates autonomously via its front-panel interface, its RS-232C port enables bidirectional communication with Windows-based host applications. Raw measurement sequences—including air weight, immersed weight, temperature, medium density, and computed results—are transmitted in ASCII format with configurable delimiters and header metadata. Data logs can be imported into Excel, MATLAB, or statistical analysis platforms for trend monitoring, capability studies (Cp/Cpk), or regulatory submission packages. Optional firmware upgrades provide enhanced traceability features: electronic signature fields, audit trail timestamps, and user-defined report templates compliant with ISO/IEC 17025 documentation requirements.
Applications
- Rubber compound development: rapid verification of filler loading (carbon black, silica), crosslink density estimation, and batch-to-batch consistency screening
- Quality assurance in tire manufacturing: density profiling of tread compounds, sidewall elastomers, and innerliner layers against ASTM D297 and ISO 4649
- Polymer recycling labs: identification and sorting of mixed plastic streams (PP, PE, PET) via density fingerprinting
- Advanced materials R&D: characterization of syntactic foams, aerogel composites, and metal matrix materials where porosity and phase distribution affect bulk density
- Ceramic and powder metallurgy: true density measurement of green bodies and sintered parts; calculation of apparent density and tap density ratios per ASTM B962 and ISO 3953
- Footwear and sports equipment: density grading of EVA midsoles, PU foams, and synthetic leather substrates to correlate with compression set and rebound resilience
FAQ
What standards does the DA-300M support for rubber density testing?
ASTM D297, GB/T 533, ISO 4649, and DIN 53516 are natively supported through preconfigured calculation modes and unit conversion logic.
Can the DA-300M measure powders?
Yes—it includes dedicated accessories for true density (helium pycnometry not required) and apparent density measurements per ASTM B962 and ISO 3953 using liquid displacement methodology.
Is temperature control built-in?
The unit does not include active thermostatic regulation but provides precise ambient temperature input (0.1 °C resolution) and compensates calculations accordingly; external water baths may be used for controlled immersion conditions.
How is pass/fail judgment implemented?
Users define upper and lower density tolerance limits; the device triggers visual and audible alerts when measured values fall outside the specified range, logging each event with timestamp and operator ID.
Does the DA-300M comply with FDA 21 CFR Part 11?
When integrated with validated third-party software and access-controlled network environments, the DA-300M meets electronic record and signature requirements for regulated pharmaceutical and medical device manufacturing.
