As a leader in Opacity Meters, beginning with our test cell units, Telonic Berkeley has many years of experience associated with Diesel Smoke Testing and Applications. Currently, we offer two models, the Model TBM300 Portable Opacity Meter, designed to meet and exceed the requirements of the SAE J1667 snap-acceleration test, and the Model 107 Opacity Meter, used primarily for in-line cell testing. Both models operate on the light extinction principal utilizing green LED with a spectral peak between 550 and 570 nanometers.
