Principle: Cross flow modulation type, Ultra-violet-absorption method (NDUV) Application: O3 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 (3σ) Repeatability: ±1.0% of F.S. Linearity: ±1.0% of F.S. Zero drift: ＜LDL/day at lowest range ＜LDL/week at lowest range Span drift: ＜LDL/day at lowest range ＜LDL/week at lowest range Resposnse time (T90): Within 75 sec at lowest range Sample gas flow rate: Approx. 0.7 L/min Calibration gas: Span: O3, Zero: Purified Air Indication: Measured value, range, alarm, maintenance screen Alarms: During AIC, zero calibration error, span calibration error, temperature error in ozone separator, light intensity error, etc. On-screen messages are available in four languages: English, German, French, and Japanese. Input/output:・0-1 V/0-10 V/4-20 mA, to be specified (2 systems: either (1) momentary value and integrated or (2) moving average value) ・Contact input/output ・RS-232C (option) Ambient temperature: 5-40°C Power: 100/110/115/120/220/230/240 VAC, 50/60 Hz (to be specified) Dimensions: 430(W)×550(D)×221(H) mm Mass: Approx. 15 kg