AC500 Product close-up

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.


  • 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.
AC500 Isoperibol Calorimeter
  • AC500 with no Vessel
  • AC500 with Wire Igniter Vessel
  • AC500 with String Igniter Vessel
  • Wire Igniter Vessel
  • String Igniter Vessel
Instrument Brochure(s)
Request More Information