Description: The OA series portable analyzer is a cost effective solution in a small package for oxygen measurement and control applications. It is compact, cheap and easy installation and designed to provide the trained operator with useful information relating to the concentration of oxygen in non-flammable gases and non-hazardous area. Its microprocessor based main board can offer accuray measure ppm or percent range oxygen. It is ideally suited for measuring trace or high levels of oxygen in applications including High Purity Welding, Solder Reflow, Metal Annealing, semiconductor furnaces, glass manufacture, inert atmosphere chambers, and nitrogen or oxygen generators. Specifications：
| Model： | OA-201 | OA-301 | OA-401 | OA-502 | OA-601 | | Measuring Range： | 0-100 ppm | 0-1000ppm | 0-10000 ppm | 0-25% | 0-* | | Sensor Type： | Zirconia Oxygen Sensor | | Accuracy： | ±2% Full Scale | | Response Time： | Approximay 6 sec. for T95 | | Operating Flow Rate： | 1 l/min | | Operating Temperature: | 0° to 45° C （32 ? 113° F） | | Operating Humidity: | 0?90% Non?condensing | | Operating Pressure | 1 BarA | | Max. Pressure Resistance | 3 BarG （without Pump） or 0.5 BarG （with Pump） | | Calibration@ 1 l/min： | Span/ Zero Gas （2 points） | | Analog Output： | 4-20mA or 20-4mA Selectable （0-10V/ 10-0V optional） | | Alarm Contact： | 1 Dry Contact, High/ Low Selectable | | Warming Up： | 200 sec. at Room Temperature （25℃） | | Digital Interface | RS485 for Calibration/ Setting | | Calibration/ Setting Software | Included with RS485 to USB Converter | | Power： | 90-250VAC | | Power Consumption： | Maximum 0.5A | |
