NAWAS TGA-2000 Coal Quality Analyzer for Industrial Proximate Analysis
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported Instrument |
| Model | TGA-2000 |
| Price Range | USD 42,000 – 70,000 (FOB) |
| Temperature Range | 50–1000 °C ±1 °C |
| Sample Mass | 0.1–5 g |
| Mass Resolution | 0.0002 mg |
| Sample Capacity | 19 positions (configurable) |
| Mass Change Range | 0–100% |
Overview
The NAWAS TGA-2000 Coal Quality Analyzer is a dedicated thermogravimetric instrument engineered for standardized proximate analysis of coal and coke in accordance with ASTM D3172, ISO 1171, ISO 562, and GB/T 212. It operates on the principle of controlled-atmosphere thermal decomposition under precise temperature ramping profiles, continuously monitoring mass loss (or gain) as a function of time and temperature. Designed specifically for high-throughput routine testing in coal preparation plants, power generation laboratories, and third-party certification facilities, the system delivers traceable, auditable, and GLP-compliant results without manual intervention during the thermal cycle. Its dual-carousel architecture enables fully automated crucible lid handling — a critical feature for minimizing atmospheric oxygen ingress during volatile matter determination and eliminating operator exposure to elevated furnace temperatures.
Key Features
- Dual independent sample carousels: upper carousel for crucible lids, lower carousel for crucibles — enabling synchronized lid placement, sealing, and removal inside the furnace chamber
- Motorized vertical translation of the upper carousel ensures repeatable, contactless lid positioning — eliminating mechanical wear, lid drop risk, and operator thermal hazard even at 600 °C furnace opening
- Integrated 4-digit analytical balance (0.0002 mg resolution) mounted within the inert gas purged weighing zone; optional external balance integration for pre-weighing and high-volume throughput
- Programmable thermal protocols: user-defined setpoints for temperature, heating rate (°C/min), dwell time, and purge gas type/flow (N₂, air, or custom mixtures) per analysis stage
- Automatic power recovery: system resumes scheduled runs after unexpected power interruption without data loss or positional error
- Magnetic sensor array: immune to dust accumulation and ambient particulate interference common in coal-handling environments
- Compact benchtop footprint with USB 2.0 interface — controllable via standard Windows PC or laptop; no proprietary hardware drivers required
Sample Compatibility & Compliance
The TGA-2000 accepts standard ceramic or platinum crucibles (diameter ≤20 mm, height ≤25 mm) and accommodates heterogeneous coal samples ranging from pulverized bituminous coal to anthracite fines and coke breeze. Each run supports up to 19 samples in parallel, with automatic sequence execution and inter-sample thermal equilibration. The instrument complies with regulatory requirements for quality-controlled coal testing environments: full audit trail logging, electronic signature support (per FDA 21 CFR Part 11 when paired with validated software configuration), and alignment with ISO/IEC 17025 documentation practices. All calibration records, method parameters, and raw thermogram data are timestamped and stored with immutable metadata.
Software & Data Management
Control and analysis are performed using NAWAS TGA Suite — a native Windows application built on .NET Framework with multilingual UI support. The software implements hierarchical user roles (Operator, Supervisor, Administrator) with password-protected access levels. Real-time mass vs. temperature curves are rendered with adjustable scaling, derivative (DTG) overlay, and peak integration tools. Raw data exports support TXT, CSV, and Excel (.XLSX) formats; structured query capability via ODBC allows direct ingestion into LIMS platforms such as LabWare, Thermo Fisher SampleManager, or Agilent OpenLab. All method files include embedded calibration certificates, gas flow logs, and balance verification timestamps — ensuring full traceability from measurement to report.
Applications
- Proximate analysis: moisture, volatile matter, fixed carbon, and ash content per ASTM D3172 and ISO 1171
- Thermal stability profiling of coal blends prior to coking or combustion trials
- Ignition temperature and burnout behavior assessment under simulated boiler conditions
- Quality control of washed coal, reject streams, and imported coal cargoes
- Research-grade kinetic modeling of devolatilization using multi-step heating programs
- Compliance verification for coal supply contracts governed by ISO 1928 or EN 15148
FAQ
Does the TGA-2000 meet ASTM D3172 requirements for volatile matter determination?
Yes — the dual-carousel lid-sealing mechanism ensures <10 ppm O₂ residual atmosphere during the 900 °C volatile release phase, satisfying the oxygen exclusion criterion specified in Section 7.3 of ASTM D3172.
Can the system be integrated into an existing LIMS environment?
Yes — via its native ODBC driver, the software provides read/write access to all method parameters, raw thermograms, and final result tables without middleware.
Is calibration traceable to NIST standards?
All included balances ship with factory calibration certificates traceable to NIST SRM 31a; optional on-site calibration services include certified reference materials for temperature (NiCr-NiAl) and mass (Class S weights).
What maintenance intervals are recommended for routine operation?
Furnace insulation inspection every 12 months; gas line filter replacement every 6 months; balance recalibration before each shift if operating in GLP mode.
Are replacement parts available through third-party suppliers?
Yes — all pneumatic actuators, solenoid valves, and thermocouples conform to ISO 8503-2 and IEC 60584 standards, enabling procurement from qualified industrial component vendors.
