The 919P-150-26 Fan Cooled Thermopile Sensor is a general purpose thermal sensor measuring optical power up to 150 W. It's BB absorber type is spectrally flat and covers the wavelength range 190 nm to 11 µm. It has an active diameter of 26 mm and can measure continuous optical power from 50 mW to 150 W and single shot energy from 20 mJ to 100 J. It has a 1/4-20 tapped hole for post or plate mounting and includes a 2.25 inch long 1/2 inch diameter post with a 1/4-20 tapped hole on both ends.