PI2-MS-500 and PI2_MS-1000 PPB O2 Analyzers offer 0-500 PPB  or 0-1000 PPB low ranges, with 2.5 PPB LDL, measures O2 concentrations from 0 PPB to 1000 PPM utilizing the proprietary Pico-Ion oxygen sensor technology, recovers to low PPM levels in minutes. Features

• an advanced Pico-Ion oxygen sensor technology
• over 36 month operating life with no periodic maintenance
• menu driven controls
• integral 4-way Sample/Bypass valve
• integral PID controlled heated system for enhanced accuracy
• two user field selectable oxygen alarms
• USB or RS232 data communication
• integral data logger