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The Optidew high performance optical dew point transmitter is based on the proven, fundamental optical dew point measurement principle, giving long-term unmatched drift-free performance. The transmitter offers a wide measurement range from the equivalent of <0.5 to 100%RH at ambient temperatures from -40 to +190°F. The Optidew provides two linear 4-20 mA outputs and RS-232 serial communications, allowing configuration and monitoring by a suitable computer or PLC system or via specific Optidew logging software. An adjustable isolated alarm contact allows the Optidew to be used for direct process control. An optional high definition alphanumeric display provides local indication of the measured moisture and temperature values.

Optidew Features

• Precision process dew point, % rh and temperature measurement
• Measurement range: <0.5 to 100 % rh from –40 to +190°F ambient
• ±0.36°F dew point accuracy (±0.27°F optional)
• Fundamental drift-free dew point measurement
• Rugged, NEMA 4X SS industrial housing
• High temperature sensor option to 250°F
• Optional local display