Opacimeter recorded using smoke opacity diesel exhaust, its working principle shown in Figure 2. Opacimeter measurement chamber of optical path length is 430mm, the sampling line temperature control by the exhaust gas inside the measuring chamber is stably maintained at around 100 ° C. Diesel exhaust through the sampling line (sampling probe welding) and temperature control of the sampling tube, the sampling by the diaphragm pump, to maintain a constant flow rate of the sample gas. Sample gas returned to the exhaust pipe through the return conduit, the sample flow can be guaranteed in the case of constant pressure changes.
正在翻譯中..