DeFelsko PosiTector DPM Dewpoint Meter Logger


Magnetic Temperature and Dewpoint probe attaches to steel structure for climatic condition monitoring.
  • Measures, records and stores climatic conditions including: relative humidity, ambient air temperature, surface temperature, dew point temperature, difference between surface and dew point temperatures, and wet bulb temperature.
  • Fast response and precision sensors provide accurate readings
  • Environmentally sealed enclosure – meets or exceeds IP65. Weatherproof, dustproof, and shockproof.
  • Memory storage for 10,000 datasets (60,000 readings)


  • Magnetically attaches to steel structures to measure environmental conditions and record data for up to 200 days. Stored readings can be downloaded using your Apple/Android smart device or PosiTector Advanced gauge body.
  • Records data at intervals from every 1 min. to 8 hrs.
  • Fully sealed enclosure – meets or exceeds IP65 for weatherproof, dustproof, and shockproof.
  • Repeatable accurate readings and fast response from precision sensors.
  • Huge memory storage of 10,000 datasets (60,000 readings)
  • Security Kensington Slot for anti-theft protection. (Optional)
  • Uses common CR2032 coin cell battery.
  • Date and time stamp on every stored dataset.
  • Certificate of Calibration included with traceability to NIST.
  • Conforms to international standards including ISO and ASTM
  • Industry Leading Two-year warranty


  • Size: Ø50 mm x 38 mm
  • Weight: 50 g  without battery
  • Operating Range: -10° to 60°
  • IP Rating: 65
  • Memory: 10,000 datasets
  • @ 5 min interval = 34 days
  • @ 10 min interval = 68 days
  • Logging Measurement Interval: Adjustable from 1 min – 8 hours


  • @ 5 min interval = 120 days
  • @ 1-hour interval = 200 days
  • ~ The stated battery life is during unattended logging. Battery life will be reduced while connected to smartphone or gauge.


  • Any Blasting and Painting Project
  • Long duration jobs
  • Projects where QA Site office location is some distance away. Eg: Bridge jobs, Refinery, Tank Farm
  • Coating Inspectors