PosiTector DPM Dew Point Meter by DeFelsko

Integral Probe with Direct Contact Surface Temperature Sensor

Measures and records climatic parameters including: air temperature, surface temperature, relative humidity, dew point temperature, and difference between surface and dew point temperatures.

Ideal for surface preparation as required by ISO 8502-4.

Starting at $315.00

PosiTector DPM Dew Point Meter by DeFelsko
Grouped product items
Product Name Qty
PosiTector DPM Standard Dew Point Meter with Built-In Probe
PosiTector DPM Advanced Dew Point Meter with Built-In Probe
Probe Only for PosiTector DPM Dew Point Meter, Built-In


Measures and records climatic conditions including: Relative humidity, air temperature, surface temperature, dew point temperature and difference between surface and dew point temperatures. Ideal for surface preparation as required by ISO 8502-4, BS 7079-B4, ASTM D3276, IMO PSPC, SSPC-PA7 and US Navy NSI 009-32.


  • Large, easy-to-read, graphics LCD
  • Enhanced one-handed menu navigation
  • No need to consult complex tables or use a slide rule calculator
  • Audio and visual alarm – indicates when climate conditions are unsuitable for painting
  • All readings are constantly updated and displayed simultaneously
  • RESET feature instantly restores factory settings


  • Rugged, outdoor/indoor instrument
  • Solvent, acid, oil, water and dust resistant – weatherproof
  • Shock-absorbing, protective rubber holster with belt clip and wrist strap
  • Two (2) year warranty on body and probe


  • Fast response precision sensors provide accurate, repeatable readings with high reliability and long term stability
  • SmartTrend™ Indicators identify rising, falling or stable readings
  • Certificate of Calibration showing traceability to NIST included
  • Conforms to national and international standards including ISO and ASTM


  • Gage body universally accepts all PosiTector DPM (environmental), SPG (surface profile), 6000 (coating thickness) and UTG (ultrasonic thickness) probes 
  • Internal Memory stores datasets with the simple touch of a button
  • Auto Log Mode automatically records 5 parameters at user selected time intervals. Ideal for unattended operation.
  • Field calibratable
  • Celsius/Fahrenheit switchable
  • Selectable display languages
  • Hi Contrast backlit display for bright or dark environments
  • Flip display enables right-side-up viewing
  • Uses alkaline or rechargeable batteries (built-in charger)


  • Hold function freezes the display allowing measurements to be manually recorded
  • USB port for fast, simple connection to a PC and to supply continuous power. USB cable included
  • Screen Capture -record and save image into USB flash memory for record keeping and review
  • Software updates via web keep your gage current
  • PosiSoft solutions for viewing, analyzing & reporting data:
    • PosiSoft USB Drive -stored readings and graphs can be accessed using universal PC/ Mac web browsers or file explorers. No software required
    • PosiSoft.net account - a free web-based application offering secure storage of thickness readings
    • PosiSoft 3.0 - desktop software (PC/Mac) for downloading, viewing, printing and storing measurement data. Available as a free download.
    • PosiSoft Mobile -(Advanced models only) - access readings, graphs, capture photos and update notations through WiFi enabled devices such as tablets, smart phones and computers
  • Every stored measurement is date and time stamped

Gage Selection

The PosiTector DPM consists of a body (Standard or Advanced) and a probe (built-in or separate).


Step 1: Select a body (Standard or Advanced features)

  Standard and Advanced - Feature Comparison Standard (1) Advanced (3)


All features shown on Overview page

Accepts all PosiTector DPM (environmental), 6000 (coating thickness) & SPG (surface profile) probes.

Hi Contrast LCD Display

Monochrome Color

Dataset Storage Capacity (1 dataset = RH, Ta, Ts, Td, Ts–Td) Stored readings can be viewed or downloaded

2,500 in 
one group
20,000 in up to
1000 groups

Auto Log Mode automatically records all 5 parameters at user selected time intervals. Runs unattended on batteries or continuously via USB.

Unattended battery life (using 3 AAA alkaline batteries)

up to 50 hours up to 8 months

Batch Annotation - Create meaningful batch names and enter notes directly on the instrument using a familiar 
on-screen QWERTY keyboard.


Stream datasets via USB or Bluetooth wireless at specified Auto Log intervals. Ideal for remote monitoring.


Trend Charts graph readings in real-time.


User defined limits for all parameters with visible and audible warnings


NEW!  WiFi technology wirelessly synchronizes with PosiTector.net, downloads software updates, and connects to mobile devices for expanded functionality


Bluetooth Wireless Technology for data transfer to a PC or optional portable printer.


Onscreen help, real time graphing, picture prompting and batch notes













































Step 2: Select Probe Style (Built-in or Separate)

Built-in Probe

  • Includes built-in air temperature/humidity sensor and thermocouple surface temperature sensor

Separate Probe

  • Includes built-in air temperature/humidity sensor and K-type connector
  • Magnetic surface temperature sensor with armored cable and locking device to prevent accidental disconnection from the instrument during unattended operation
  • Includes magnetic tab to attach the gage body onto steel structures
  • Easily converts to accept other optional K-type probes including:



A) Hand-held Surface Temperature Probe – for spot checking hard-to-reach surfaces

B) Self-adhering Surface Temperature Probe – sticks to solid materials including aluminum, wood, concrete, etc. Ideal for unattended monitoring.

C)  Liquid Temperature Probe – general purpose probe with stainless steel shaft

Ordering Guide

Probe Style Built-in probe Separate probe


Order Code Order Code
Body and


Advanced   DPM3 DPMS3



ALL GAGES COME COMPLETE with humidity, air and surface temperature sensors, protective rubber holster with belt clip and wrist strap, 3 AAA batteries, instructions, nylon carrying case with shoulder strap, protective lens shield, Certificate of Calibration traceable to NIST, USB cable, two (2) year warranty.

SIZE: 178 x 64 x 31 mm (7 x 2.5 x 1.2 in.)

WEIGHT: 185 g (6.5 oz.) without batteries

CONFORMS TO: ISO 8502-4, BS 7079-B4, and ASTM D3276