Isoperibol Calorimeters for Gross Calorific Value Analysis

Streamlined Process

The AC Series is designed to simplify calorific value determination through an efficient benchtop footprint and intuitive workflow. Integrated water management, stable temperature control, and guided operational steps reduce manual effort and help laboratories maintain consistent, reliable throughput.

Enhanced Automation & Vessel Handling

Built‑in automation and modern vessel‑handling design minimizes repetitive tasks and promotes safer, more comfortable operation. From vessel loading to system stabilization, the AC600 reduces operator fatigue and provides smoother day‑to‑day performance—ideal for busy fuel‑analysis labs.

Flexible Analysis Modes

The AC Series supports flexible analytical approaches. The AC500 features legacy modes like Regnault-Pfaundler, Precision, and Predictive modes while the AC600 includes advanced thermodynamic modeling that accelerates data acquisition while maintaining high accuracy. This modeling capability enables rapid, stable calorimetric results even under demanding testing conditions.

Advanced Software & Data Management

The AC Series features modern, Windows‑based data handling with intuitive control, robust method management, and seamless integration with LIMS environments. Streamlined reporting and flexible connectivity help laboratories maintain traceability and efficiency across multiple instruments.

Automated Calorimetry

The AC600 expands standard isoperibol calorimetry through increased automation, rapid equilibration, and LECO’s TruSpeed thermodynamic modeling. The ergonomically engineered combustion vessel features a 1.5 turn closure and lightweight construction that simplifies vessel handling and reduces repetitive motion.

After vessel loading, the AC600 automates key steps including bucket refill and sealing, improving consistency and reducing operator workload. Users may choose between two analytical modes:

• Delta T Mode – A straightforward temperature rise measurement similar to classical calorimetry.
• TruSpeed Mode – A real time thermodynamic model that accounts for heat exchange between system components, enabling rapid five-minute analysis cycles while maintaining precision and accuracy.

These features make the AC600 well suited for high throughput operations requiring shorter cycle times, advanced data modeling, and expanded automation.

AC500 Operation

The AC500 utilizes a classical isoperibol calorimetry design optimized for reliability and simplicity in routine analysis. The instrument supports traditional calorimetry modes such as Regnault/Pfaundler as well as predictive and high-precision modes, enabling analysis times from 8 to 20 minutes depending on method choice and lab workflow.

The AC500 uses a standard combustion vessel that is manually assembled, sealed, and loaded by the operator. Once placed in the bucket, the instrument manages water circulation, bucket sealing, temperature stabilization, ignition, and data collection. The AC500’s standalone configuration—with fully integrated water handling—makes it ideal for laboratories requiring accurate calorimetry with a compact footprint and minimal peripheral equipment.

This design provides dependable calorific value determination for low to medium throughput environments while maintaining full compliance with relevant ASTM and ISO methods.