brochure du moniteur d'ozone ambiant apoa-370

Ambient Os Monitor APOA-370

Measurement component

Features

• Cross-flow modulated ultra-violet absorption detector; Low range: 0-0.1 ppm FS.
• Heated de-ozonator removes any Oz in the reference gas to:
• Reduce interference
• Eliminate moisture interference
• Prolong life-cycle of the UV lamp
• Only inert materials (glass or PTFE) contact sample.

Principle

Cross-flow modulation type, Non dispersive ultra-violet absorption method (NDUV). The ultra-violet absorption method works on the principle that ozone absorbs ultra-violet rays in the area of 254 nm. Measurements are taken from continuous, alternate injections of the sample gas and the reference gas into the measurement cell, controlled by a long-life solenoid valve.

Specifications

• Principle: Cross flow modulation type, Ultra-violet-absorption method (NDUV)
• Application: Os in ambient air
• Range: Standard range: 0-0.1/0.2/0.5/1.0 ppm
• Optional range: 5 ranges selectable from 0-10 ppm range within 10 times range.
• Range selection: Auto or manually ranges selectable. Can be switched by remote operation.
• Lower detectable limit: 0.5 ppb (20)
• Repeatability: ? 1.0% of F.S.
• Linearity: ? 1.0% of F.S.
• Zero drift: