APSA-370 (SO2)
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.
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.
Specifications
Principle |
UV fluorescence (UVF) |
Application |
SO2 in ambient air |
Range |
Standard ranges: 0-0.05/0.1/0.2/0.5 ppm; auto range ~ manual range selectable; can be operated by remote switching. |
Repeatability |
±1.0% of F.S. |
Linearity |
±1.0% of F.S. |
Sample gas flow rate |
Approx. 0.7L/min |
Indication |
Measured value, range, alarm, maintenance screen |
Alarms |
During AIC, zero calibration error, span calibration error, temperature error in catalyzer, etc. |
On-screen messages are available in four languages |
English, German, French, and Japanese. |
Input/output |
• 0-1 V/0-10 V/4-20 mA, to be specified (2 systems: either (1) momentary value and integrated or (2) moving average value) |
Power |
100/110/115/120/220/230/240 VAC, 50/60 Hz (to be specified) |
Dimensions |
430(W) x 550(D) x 221(H) mm |
Mass |
Approx. 19 kg. |