APSA-370

Ambient Sulfur Dioxide Monitor

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.

 

 

Division: Ambient
Manufacturing Company: HORIBA, Ltd.
Base product: AP-370 Series

• UV-fluorescent detector resistant to moisture interference; Low range: 0-0.05 ppm F.S.
• Alternately to FDP measurements, the detector design is highly SO2 selective and requires no supplemental gas.
• Integral HC-cutter with a selective membrane eliminates interfering components.
• Incorporates a lamp intensity compensator.
• Uses a built-in inert PTFE sample inlet filter.

Related Applications

 

 

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.
Optional (measurable) ranges: 4 ranges selectable from 0-10 ppm, within 10 times range ratio;
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)
• Contact input/output
• RS-232C

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.

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