AC500Isoperibol Calorimeter for Gross Calorific Content
The AC500 determines calorific value, a key indicator of quality and value in solid and liquid fuels, through measurement of the heat released after combustion of a sample. This stand-alone benchtop unit uses a fully-integrated circulation system for a compact footprint–no additional heaters or coolers required.
An integral water-measuring station simplifies sample preparation, and the operating system uses an electronic thermometer accurate to 0.0001°C to measure temperature every six seconds. Two-channel correction is possible through constant temperature monitoring in both the outer jacket and the calorimeter proper.
Features
- High precision across a wide range of sample sizes and ambient conditions
- Fuse wire or string-ignition combustion vessel
- Several analysis modes available: Regnault-Pfaundler, Precision, and Predictive
- An optional string-ignition combustion vessel provides a seamless analysis without wire connections.

Customer Testimonials
Our main instruments for ‘fuel analysis’ are LECO calorimeters AC500 & AC600, LECO TruSpec CHNS together with LECO CHNS628 and Thermogravimetric analyzers LECO TGA601 & TGA701. It could take us as little as 2 minutes per analysis and with the TGA we can simply load samples and continue working on other tasks! LECO understands the importance of our work and provides highly relia...Read the Full Testimony
Coal Services A.S.
