257 Series Continuous Dew Point Analyzer
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257 Series CONTINUOUS DEW POINT ANALYZER APPLICATIONS For continuous dew point analysis of heat treat furnace gases, atmosphere gases, compressed air, and other similar applications. FEATURES • Standard range of -40° to 104°F (-40° to 40°C) Dew Point (other ranges and units of measure available upon request) • Rugged design that is easy to operate • Use on any non-corrosive gas • Long-life dielectric polymer sensor • May be calibrated in the field • Bright digital readout • Built-in sample pump, oil vapor filter, and flow meter • Sensor easily replaced if contaminated • Factory calibrated to NIST traceable standards Standard NEMA 12 (IP50) Enclosure OPTIONS • Compressed Air Configuration for dew point at line pressure • Recorder outputs of 0-1V or 4-20mA • Calibration kit • Also available in NEMA 4, & 19" rack mount cabinets • Carbon potential calculation, using input from customer-supplied Type K thermocouple Optional NEMA 4 (IP65) Enclosure CALIBRATION • Calibration is easily performed in the field using the optional calibration kit (Part no. NDPCK-02). • Alternatively, the analyzer may be returned to Nova for a certified calibration NOVA ANALYTICAL SYSTEMS www.nova-gas.com

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description The Nova 257 Series Continuous Dew Point Analyzers have been designed primarily for accurate dew point measurement of exothermic/endothermic heat treating atmospheres and other similar applications. The dielectric polymer sensor provides stable and accurate dew point measurements and is not affected by most gas compositions (see below.) A built-in sample pump draws in samples that are of insufficient pressure from the process. The sample flow is shown on a small rotameter with valve. The analyzer then reads the dew point continuously. models • 257N12: NEMA 12 (IP50) dust-tight...

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