Edgetech Instruments DewTech 390 Low Dewpoint Hygrometer (-90°C ~ 20°C)

Sensor: Three-stage Peltier cooled chilled mirror with additional refrigeration

Measurement Range: Dew/frost point, -90°C to 20°C (-130°F 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: 

Scrolling 8-line graphic data display with backlight

Dew/frost point temperature in °C or °F

Handles for portability

Relative humidity, ambient temperature, ppm, and pressure

Optional Inputs: 

Pressure transducer for ppm calculations

Temperature sensor for relative humidity calculations

Outputs: 0 to 5 Vdc, 4 to 20 mA, 0 to 10 Vdc, or 0 to 20 mA 

User scalable, available simultaneously, one output per measurement parameter

Power: 110 to 230 Vac, 50/60 Hz 

Sample Pressure: 0 to 75 psia (0 to 5 bar)

Sample Flow Rate: 0.5 to 5.0 SCFH (0.25 to 2.4 liters/minute)

Integral Cryo-Cooling Refrigerant: R 404A 

Dimensions: 23.62 x 20.47 x 17.13 in (600 x 520 x 435 mm) 

Weight: 103 lb. (47 kg) 

Datasheet

Applications

Air Separators

Biologics and Cell Culture

Furnace

High Accuracy

Medical Gas

Metrology

NIST Tracible Measurement in Metrology and Calibration Labs

Pharmaceuticals

Plastics

Power and Energy

Purified Gases

R&D Test & Measurement

Semiconductor

Vacuum Systems