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Portable Dew Point Products


Model SADPminiEx Intrinsically Safe Dewpoint Hygrometer

  • Certified Intrinsically Safe for use in explosive atmospheres: II 1G Ex ia IIC T4 Ga (Ta -20ºC to +40ºC) or Ex ia IIC T3 Ga (Ta -20ºC to +50ºC)
  • User Selectable Units - ºC, ºF, ppm(v), ppb(v), ppm(w), g/m3, lbs/MMSCF
  • Desiccant Dry Down Assembly for Quick Measurements
  • Real Time Graphic Logging to PC
  • Advanced DATA Logging & PC Download
  • RS485 Serial Communication
  • 4-20mA Analogue Output
  • Electronic Automatic Calibration
  • Pressure Correction Computation
  • Various Ranges between -110ºC to + 20ºC dewpoint
  • True Hand Held Portable Device
  • Fully Self-Contained
  • User Friendly
  • Multi-Level Security to Prevent Unauthorised Tamper
  • Robust Ergonomically Designed Custom Housing


Ultra Compact, Ultra Portable, Ultra Functional


The new SADPminiEx Hygrometer combines the proven reliability and excellence of ultra-high capacitance aluminium oxide dewpoint sensor with state of the art electronics in an ultra portable, compact and lightweight instrument that sets the industry standard in Portable Dew Point Measurement

The Model SADPminiEx uses built-in Automatic Calibration and Dry-Down Technology to achieve very rapid, reliable and accurate readings every time and the connectivity of the SADPminiEx provides a versatile solution. Linear 4-20mA analogue output, Serial RS485 communications and direct USB connection to PC are all available. The rechargeable battery will provide over 250 hours of continuous operation from full charge.

This compact and portable unit is supplied as a robust and rugged, yet lightweight, hand-held device, ready to use with calibration certificate traceable to National and International Humidity Standards, two metres of PTFE sampling hose, universal battery charger, full instruction manual plus an anti-static carry case for use in hazardous areas to protected the unit.

Model SADPminiEx is available in various ranges from -110║C to +20║C Dew Point. The Large backlit Graphical display reads in a variety of user selectable units (║C, ║F, ppmV, ppmW, ppbV, g/m│, lbs/MMSCF) and display logged data graphically over a selectable time period.


SADPminiEx.pdf data sheet
SADPminiExAccessories.pdf accessories data sheet
(requires Adobe acrobat)

alpha moisture systems
Alpha House, 96 City Road
BRADFORD, ENGLAND BD88ES
t:+44 (0)1274 733 100  f:+44(0)1274 733 200