• Measurement based on UV absorption
• Low power consumption; can be battery operated (optional external lithium-ion battery)
• Internal data logger with real-time clock
• 2-s measurement interval
• On-board microprocessor with interactive menus includes data averaging options of 10 s, 1 m, 5 m, 1 hr, and user-defined adaptive filter
• USB and RS-232 output of time/date, O3 concentration, internal temperature and pressure
• Analog output (0-2.5 V and 4-20 mA) of ozone concentration in user-selected units and scaling factors
• Two 2-level relays for control purposes (e.g., control of ozone source or turn warning light on and off)
• Long-life pump (15,000 hr)
• Bluetooth option for wireless data transmission