Dissolved Ozone Meter OZ-21P

TheOZ-21P Portable Ozone meter provides an instant measurement of dissolved ozone in potable water by the use of a polarographic sensor. This unit is similar in technical operation to the RC-31P residual chlorine meter.. A unique beads polishing system incorporated at the electrode system maintains the electrode in good working condition, free of interferences at the gold microelectrode, and ensures stable measurement. The meter also indicates the sample temperature and includes a built-in-clock. The instrument can store one set of results ( measurement, temperature and time) in memory for later retrieval. Power is provided by two standard AA batteries which have an operating life of up to 50 hours. Features: Reagent Free, low operating cost Simple measurement by pressing start button after immersion Auto hold function is available 0-2mg/ l measuring range Stable measurement by polarograph method using beads polishing system Data storage memory for 300 sample results External printer option Specifications Model OZ-21P Sensor OZ-221A Measuring Method Polarographic method Indication digital display, Ozone concentration, temp., and time simultaneous Sample Water Ozonated water, City water or well water. Used or dirty disinfection wash water not measurable. Range: Dissolved Ozone : 0-2.0 mg/ L( ppm) , lower detection limit is 0.05mg/ L water Temperature: 5 to 40 degrees C. Repeatability Auto Hold Mode 1: Diss. Ozone: + / -5% F.S.( + / - 0.1 mg/ L) or less. Temp: + / -0.5C Auto Hold Mode 2: Diss. Ozone: + / -10% F.S.( + / - 0.2 mg/ L) or less. Temp: + / -1.0C Response time Auto Hold Mode 1: Shorter than 1 min, 30 seconds at 25C Auto Hold Mode 2: Shorter than 1 min at 25C Water Conditions pH 5.5to 8.5, Electric Conductivity 10-200 S/ m( 100uS-2mS/ cm) , 100-200ml/ min flow, stable Interferences Oxidation/ Reducing Substances Temp. Compensation Automatic ( 0-40 C) Calibration zero/ span or by coefficient input method/ correlation to colorimetric or alternate technique Material Main Unit: ABS Sensor: PVC, Gold, Silver, Epoxy resin, ABS, silicon, Polyethelyne, Stainless steel Alumina Sensor Cable 1M standard. Optional 3m cable available RS-232 C Output Printer output, RS-232C Standard Water Proof construction IP67 type, JIS C920 protection class 7 Power Source 2x AA cells or AC adapter( option) Dimensions / weight Main Body: 75mm( W) x 187( H) x 37( D) Approx. 305g, sensor 180g