Defelsko PosiTector DPM L

Dew Point Meter Logger

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Magnetic probe attaches to steel structures for monitoring climatic conditions.
  • Measures and records climatic conditions including: relative humidity, air temperature, surface temperature, dew point temperature, difference between surface and dew point temperatures, and wet bulb temperature.
  • Fast response, precision sensors provide accurate, repeatable readings
  • Environmentally sealed enclosure – weatherproof, dustproof, and shockproof—meets or exceeds IP65
  • Internal memory storage of 10,000 datasets (60,000 readings)
Conforms to ISO 8502-4, BS 7079-B4, ASTM D3276, IMO PSPC, SSPC-PA7 and US Navy NSI 009-32
This product does not have additional information.


  • Attaches to steel structures to measure and record environmental parameters independently for up to 200 days. Stored datasets can be downloaded using a PosiTector Advanced gage body or Apple/Android smart device.
  • Records parameters at user selected intervals from 1 min. to 8 hrs.
  • Environmentally sealed enclosure – weatherproof, dustproof, and shockproof — meets or exceeds IP65
  • Fast response precision sensors provide accurate, repeatable readings
  • Internal memory storage of 10,000 datasets (60,000 readings)
  • Kensington Security Slot for anti-theft protection. Kensington Lock sold separately.
  • Uses common lithium coin cell batteries (CR2032)
  • Every stored dataset is date and time stamped
  • Certificate of Calibration showing traceability to NIST included
  • Conforms to national and international standards including ISO and ASTM
  • Two year warranty

For use with the PosiTector App and PosiTector Advanced

  • Display and record climatic parameters from remote (wireless) PosiTector DPM L probes
  • Automatically download readings once connected via Bluetooth 4.0 Technology (Bluetooth Smart)
  • View live measurement data on screen
  • Alarms indicate when climate conditions exceed user-selectable parameters
  • Smart TrendTM indicators identify rising falling or stable readings
  • Easily create reports and manage data with PosiSoft software

PosiTector App

  • An easy-to-use mobile app (iOS/Android) that wirelessly connects to PosiTector DPM L Smart Probes.
  • Automatically generate user-formatted reports and share via email, text, cloud storage services like Dropbox, and more

PosiTector Advanced

  • Storage of 100,000 datasets in up to 1,000 batches
  • Onscreen graphing of measurement data
  • Includes the entire PosiSoft Suite of solutions for analyzing and reporting data
  • View and print readings and graphs using universal PC/Mac web browsers and file explorers






Surface Temperature


-10° to 80° C± 0.5° C0.1° C
80° to 100° C± 1.5° C
14° to 175° F± 1° F0.1° F
175° to 212° F


± 3° F
Air Temperature


-10° to 60° C± 0.5° C0.1° C
14° to 140° F± 1° F0.1° F
Humidity0 to 100%± 3%0.1%
Dew Point-60° to 60° C± 3° C*0.1° C
-76° to 140° F± 5.4° F*0.1° F

* Dependent on RH. See Dew Point (Td) Accuracy for more information.

Size: Ø50 mm x 38 mm (Ø2″ w x 1.5″ h)

Weight: 50 g (1.8 oz.) without battery

Memory: 10,000 datasets

@ 5 min interval = 34 days

@ 10 min interval = 68 days

Logging Measurement Interval: Adjustable from 1 min – 8 hours

IP Rating: 65

Battery Life^:

@ 5 min interval = 120 days

@ 1 hour interval = 200 days

‍^ The stated battery life is for unattended logging. Battery life is reduced while connected to the PosiTector App or instrument.


This product has no accessories.
This product does not have software options.
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