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Automatic calibration.

Automatic range selector.

Temperature and pressure compensation.

Easy-to-read user interactive LCD display.

Optional Compact Flash memory card.

Dual bi-drectional RS-232 communication ports (optional Modbus or Ethernet).

Teflon Liner

 

The APSA-370 uses Ultraviolet Fluorescence (UVF) analysis to measure SO₂ concentrations in ambient air. This method allows continuous monitoring and instantaneous analysis of gas in an unaltered state.  Horiba’s innovative new fluorescence chamber design minimizes scattered light, plus the optical system has been designed to provide measurements with a highly stable zero point.

The built-in aromatic hydrocarbon cutter with selective transmission membrane reduces the influence of interfering components like moisture and hydrocarbons. Coupled with HORIBA’s unique flow path, this feature can extend the working life of the cutter and measure the effects of sample flow variations.

Measurement data, alarm, and calibration history are 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 communications are also available. Plus, when an analyzer is used in stand-alone mode a Compact Flash unit provides additional memory for data storage.

Ranges: 0-0.05/0.1/0.2/0.5 ppm; automatic or user selectable other ranges available.

Lowest detection limit: 0.5 ppb

Response time: <120 seconds

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 EQSA-0506-159 (without converter, for ranges to 0.5 ppm).