DewTech 390
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Lab Grade Chilled Mirror Hygrometer with -90°C to +20°C Dew/Frost Point Range The Edgetech Instruments DewTech 390 is a precision, laboratory grade hygrometer system that features measurement of an extremely wide range of dew/frost points in a variety of gases. measurement of dew/frost point temperature to as low as –90°C frost point and as high as +20°C dew point. The DewTech 390 is intended for laboratory use and has all the attributes needed for that purpose. Other hygrometers with specifications similar to the DewTech 390 are priced much higher without offering technical or useful advantages. Edgetech Instruments’ products are known for. At the core of the DewTech 390 is a primary method, three stage Peltier cooled chilled mirror sensor. For peak efficiency, the performance of the Peltier is maximized through an integral cryo-cooling refrigeration system giving it very wide rangeability. The DewTech 390 is ideal for metrology labs, scientific research, low dew/frost point process measurements or any application where high precision measurement of dew/frost point over a wide range with fast response and high stability are required. The DewTech 390 is supported in the USA in a modern, ISO 9001:2015 registered facility with ISO/IEC 17025:2017 accredited calibration laboratory. It is delivered with a UKAS traceability certificate. Features: • • Measures dew/frost point in gases to as low as –90°C (-130°F) Periodic recalibration is not required Displays moisture concentration at atmospheric pressure or compensates for pressure variations with input from an optional pressure transducer Can optionally be configured to display temperature or pressure as well as dew/frost point User programmable dual alarm capability can be set for latching or auto-reset mode Programmable via front panel or by remote access Data outputs include dew/frost point and alarm status Analog and serial outputs include RS232 communication with terminal, printer or computer Scalable throughout the entire operating range of psychometric variables The Edgetech Instruments DewTech 390 Applications: • • • • • • Calibration laboratories Metrology laboratories Government agencies Educational institutions R&D test & measurement Pharmaceuticals quality control Medical gas measurement Furnace gas measurement Plastics manufacturing Semiconductor fabrication Power and energy production

Technical Specifications panel, an easy access sensor, plus multiple outputs bench top or 19 inch rack mount with front sensor access for easy cleaning and inspection. Sensor: Three stage Peltier cooled chilled mirror with additional refrigeration Measurement Range: Dew/frost point, -90°C to 20°C (-130 to 68°F) Accuracy: Dew/frost point, ±0.1°C Automatic Balance Control (ABC): Automatically corrects for most mirror contaminants Automatically rebalances the optics at start up Programmable ABC interval for unattended operation Display: Dew/frost point temperature in °C or °F Relative...