gas analyzer / ozone / concentration / benchtop



  • Measured entity:

    gas, ozone

  • Measured value:


  • Configuration:


  • Other characteristics:

    continuous, for ambient air, sampling



The APOA-370 continuously monitors atmospheric ozone concentrations using a cross flow modulated ultraviolet absorption method. The APOA-370 employs an independent, internal dry-method sampling device to achieve the highest levels of sensitivity and accuracy. The dry method, due to its minimal maintenance requirements and capability of continuously monitoring and instantaneously analyzing gases in their unaltered state, has been a preferred method for monitoring the atmospheric pollution.

AP Series product literature

The APOA-370 uses the cross flow modulation type, ultra-violet absorption method in conjunction with the comparative calculation method.
This permits continuous measurement with great stability and high sensitivity (0.1 ppm F.S.)
HORIBA's innovative heated deozonizer provides reference gas by decomposing the O3 found in the sample gas.
This has the advantages of (1) reducing the influence from interference, (2) making the monitor insensitive to great changes in moisture content, and (3) prolonging the working life of the monitor.
All gas connections are either PTFE or glass.