The True Heat Flow measuring principle

The power from processes in the CPA reactor is measured by separate devices, heat flow sensors. The main sensor is installed between the reactor base and the Peltier element. A Peltier element is used to pump heat between the reactor and the surrounding thermostatting liquid. This heat flow is measured by the main sensor installed between the reactor base and the Peltier element.The sensors are absolute, i. e. the correlation between the measured signal from the sensor and the heat flow through it is defined by stable and known values..

The tranducers will correctly measure the heat flow to or from the reactor regardless of the properties of the system in the reactor. The calorimetric output from the CPA202 is thus power- Watts.

The heating/cooling capacity combined with the precise measurement makes the CPA 202 useful for the studies of a wide range of processes

Peltier element.
The Peltier element is a thermoelectric device used for heating/cooling and has has nothing to do with the measuring principle. It is just a convenient way to control the temperature in a small reaction calorimeter.