Gas analyzer APSA-370

sulfur dioxidefor ambient airmoisture

Overview The APSA-370 is a device for the continuous monitoring of atmospheric SO2 using UV fluorescence. The APSA-370 employs an proprietary, internal dry-method sampling device to achieve the highest levels of sensitivity and accuracy. The dry-method, due to its minimal maintenance requirements capability of continuous monitoring and instantaneous analysis of gas in its unaltered state, has been a preferred method for monitoring the atmospheric pollution. AP-370 Series product literature Features The APSA-370 uses an innovative detector and a new optical system for low background, high sensitivity (0.05 ppm F.S.), and greatly improved stability. The fluorescent chamber design gives measurements with minimum influence from moisture. The unit has built-in aromatic hydrocarbon cutter with a selective transmission membrane. This reduces the influence of interference components. Coupled with HORIBA's unique flow-path, it also makes it possible to extend the working life of the cutter and to take measurements effects of sample flow variations. In comparison with the FPD method, the APSA-370 design is (1) highly selective for SO2, (2) requires no supplemental gas, and (3) gives linear output. Compensation for the lamp's luminous energy decline guarantees prolonged calibration stability. The sample inlet has a built-in Teflon filter.