Whether the application involves the measurement of dissolved ozone in ultrapure water or in wastewater, IN USA has several dissolved ozone analyzers to meet the requirements. IN USA's dissolved ozone analyzers measure ozone from ppb levels up to 150 ppm or more. Some models are designed for ozone measurement in ultrapure and deionized water (or other liquids) and can be installed in-line in a full-flow, single pass or recirculating stream. Other models are ideal for harsh and dirty applications such as wastewater or other liquids with large amounts of particulates. In this case, a side-stream measurement is ideal for sampling.

All models use the proven UV (ultraviolet) absorption technique to make the measurement. UV absorption is specific to ozone and provides stable readings, even at ppb levels. It also features the benefits of simple operation and easy maintenance, since it requires no consumables. Some models use IN USA's patented dual-path UV measurement technique, which has revolutionized ozone measurement by virtually eliminating the need for a reference measurement.

Typical product features include:

• Ozone measurement from ppb levels to 150 ppm (or mg/l) or more
• Flow rates from less than 1 l/min to greater than 150 l/min
• In-line (full-flow) measurement in ultrapure water and semiconductor applications
• Side-stream measurement in wastewater and other harsh, dirty applications
• Single-point or multipoint (up to five sensors) measurement
• Microprocessor-based measurement and control
• Analog and digital outputs
• Dual alarm relays
• Clean-ready for ultrapure applications
• No consumables
• Low cost of ownership
• NEMA-4X, FRPP sensor enclosures
• CE compliance