The suction pyrometer measures the true temperature of a gas.
Manufactured by IFRF
The sensor, a type S thermocouple, is shielded by 3 concentric ceramic tubes to minimize the radiative exchange with the surrounding surfaces or flames. The gas is aspirated through the ceramic shields at very high velocity (>100m/s) which ensures that convection is the predominant form of heat transfer to the sensor.
Gas sample probes
Thomas Wolfe (Lab. Technician)