The Model N400 Ultraviolet (UV) Absorption analyser uses a system based on the Beer-Lambert law for measuring low ranges of ozone in ambient air.

Instrument functions and controls are managed through a series of integrated microprocessor-controlled modules, utilising a simple and reliable CAN Bus communications architecture.

Each module is independently assembled and calibrated, allowing easy and fast field replacement to maximise instrument uptime. Intuitive operation and calibration of all N Series products are achieved through the NumaView™ Software interface.

NumaView™ Remote Software (included at no charge) provides the same virtual interface and complete instrument control, as well as access to the instrument’s large internal data storage buffer from a remote PC or tablet.

How it works

A 254 nm UV light signal is passed through the sample cell, where it is absorbed in proportion to the amount of ozone present. Periodically, a switching valve alternates measurement between the sample stream and a sample that has been scrubbed of ozone. The result is a true, stable ozone measurement.

Applications

• Ambient Air Monitoring
• Roadside Air Monitoring