7900 SERIES SINGLE & MULTI-GAS INDUSTRIAL PROCESS GAS ANALYZERS APPLICATIONS For continuous monitoring of any combination of gases such as oxygen (O2), methane (CH4), carbon dioxide (CO2), carbon monoxide (CO), and hydrogen (H2) for industrial processes including heat treating atmospheres. FEATURES • Sensitive infra-red detectors for CO, CO2, and CH4 • Thermal conductivity detector for H2 • Long life (4-5 years) electrochemical oxygen sensor; both PPM and % ranges available • Sensors/detectors temperature-controlled or compensated for maximum stability • Bright digital display for each gas • Built-in sample pump or pressure regulator • Easy to maintain modular layout OPTIONS • Dielectric ceramic sensor for standard or low range dew point • Hi/Low gas, low flow, and diagnostic alarms available • Isolated analog, RS232, RS485, MODBUS®, and Ethernet outputs available • Sample conditioning systems available for removal of moisture, acidic gas, and dust • Cabinet purge system available for use in hazardous areas • Automatic calibration with touch screen LCD display • Cabinet coolers / heaters can be fitted to most models • Heated filters and high temperature probes NOVA ANALYTICAL SYSTEMS www.nova-gas.com 7903D 3 Gas with Automatic Calibration in NEMA 4 Enclosure CALIBRATION • Ambient air for O2 span and to zero all other gases • Analyzed calibration gas with representative concentrations for span off all other gases

DESCRIPTION The Nova 7900 Series Heat Treat Analyzer System utilizes high stability infrared detectors for the simultaneous measurement of CO, CO2, and CH4. In addition, the analyzer can also be supplied with a non-consumable, long life thermal conductivity cell for H2 that is compensated for the interference effects of CO, CO2, and CH4. This ensures that H2 will always read correctly regardless of the background gas composition. A long-life eletrochemical sensor is used for PPM or % O2 analysis. Sensors are temperature-controlled or temperature-compensated for maximum stability. All detected...