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Heated deozonizer.

Long-life solenoid valve.

Automatic calibration.

Easy-to-read and use interactive LCD display.

Automatic Range Selector.

Dual bi-directional RS-232 ports (optional RS-485 or Ethernet).

Optional Compact Flash memory card.

Temperature and pressure compensation.

Unique deozonizer for the comparison gas line is unaffected by interference elements
or moisture retention.

The APOA-370 uses cross flow modulation to measure O3 in ambient air.  This involves using non-dispersive ultraviolet absorption technology (NDUV) in conjunction with the comparative calculation method. This permits continuous measurement with stability and high sensitivity.  HORIBA’s innovative heated deozonizer provides reference gas by decomposing the O3 found in the sample gas.

The APOA-370 design offers a user-friendly interactive operation with its full graphic LCD display. You can save data and access maintenance information instantly by using the touch-screen or a computer at a remote location.

A comparative calculation circuit automatically compensates for all fluctuations in the mercury vapor light source and in the detector.

Data is stored internally and can be transmitted to external devices, such as a computer, printer or other network equipment, via the system’s RS-232C serial port. Modbus and Ethernet communication is also available. A Compact Flash Memory unit is available to collect and store data for off-line analysis, or if the analyzer is used in stand-alone mode.

The APOA-370 offers precise measurements, simple operation and low maintenance in a convenient 19-inch rack-sized case.

Ranges: 0.1/0.2/0.5/1.0 ppm, automatic or user selectable; other ranges available

Lowest detection limit: 0.5 ppb (3 o)

Response time: within 75 seconds at lowest range

Zero drift: <LDL/day at lowest range; <LDL/week at lowest range

Span drift: <LDL/day at lowest range; <LDL/week at lowest range

** Certified to U.S. EPA Reference Method EQOA-0506-160