253 SERIES CONTINUOUS ANALYZER FOR LOW RANGE DEW POINT APPLICATIONS For continuous analysis of lower range dew points of air, hydrogen/nitrogen atmospheres, or other dry process gases. FEATURES • Low range of -112° to +68°F (or -80° to 20°C) dew point • Rugged design that is easy to operate • Use on any non-corrosive industrial gases or air • Long-life dielectric ceramic sensor • Can be calibrated in the field • Bright digital readout • Built-in sample pump or pressure regulator, and filter • 4-20 mA output, non-isolated • NEMA 12 enclosure standard OPTIONS • High or low dew point alarm with LED on panel • 0-1VDC or isolated 4-20mA recorder outputs • Corrosion resistant wall mount enclosure • NEMA 4 or 4X, and rack mount enclosures available Wall Mounted NEMA 12 (N12) Enclosure Model 253N12 Wall Mounted NEMA 4 (N4) Enclosure Model 253N4 CALIBRATION • On analyzed dry nitrogen for low setting • On known, current ambient air dew point for span • Alternatively, it can be returned to Nova for a certified calibration NOVA ANALYTICAL SYSTEMS www.nova-gas.com

The Nova 253 Series Continuous Analyzers for Low Range Dew Point have been designed primarily for accurate dew point analysis of heat treating atmospheres, instrument air, or other applications which may have typical dew points that are lower than what can be read by standard dew point analyzers, such as the Nova 257 Series. For analysis of dry non-corrosive industrial gases, or dry oil-free air. The dielectric ceramic sensor provides stable and accurate measurements and is not affected by most gas compositions, except those containing ammonia or corrosive gases such as SO2, SO3, and HCl. A built-in...