Drum Handling
 Drying Time/Gelation
 Film Flaws
 Film Thickness
 Impact & Flexibility
 Lab Apparatus
 Measuring Instruments
 Optical Instruments
 pH & Conductivity
 Surface Profile
 Surface Tension
Home  >>  Products  >>  Moisture/Air/Temperature  >>  Positector DPM III

PosiTector DPM Dew Point Meter

PosiTector DPM III Dew Point Meter

The PosiTector DPM is a Dew Point Meter great for Environmental Monitoring. It Measures and records climatic conditions including: relative humidity, air temperature, surface temperature, dew point temperature, wind speed, 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.




  • All readings are constantly updated and displayed simultaneously
  • Alarms indicate when climate conditions are unsuitable for painting
  • Larger 2.8" impact resistant color touchscreen with redesigned keypad for quick menu navigation
  • On-gage help explains menu items at the touch of a button
  • No need to consult complex tables or use a slide rule calculator
  • Weatherproof, dustproof, and water-resistant. IP65-rated enclosure
  • Ergonomic design with durable rubberized grip
  • Shock-absorbing, protective rubber holster for added impact resistance
  • Two year warranty on gage body AND probe
  • Fast response precision sensors provide accurate, repeatable readings
  • SmartTrend™ Indicators identify rising, falling, or stable readings
  • Certificate of Calibration included showing traceability to NIST
  • Conforms to national and international standards including ISO and ASTM
  •  Screen Capture, save 100 screen images for record keeping and review
  • Instant-on feature quickly powers up the gage if recently powered down
  • Up to 30% longer battery life
  • USB port for fast, simple connection to a PC and to supply continuous power. USB cable included.
  • PosiSoft USB Drive, stored readings and graphs can be accessed using universal PC/Mac web browsers or file explorers. No software required.
  • Includes PosiSoft suite of software for viewing and reporting data
  • Software Updates via web keep your gage current
  • Every stored measurement is date and time stamped
  • Auto Log mode records environmental parameters at user selected time intervals
  •  Auto rotating display with Flip Lock
  • PosiTector DPM L 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.
  • Celsius/Fahrenheit switchable
  • Selectable display languages
PosiTector DPM III Dew Point Meter in Use PosiTector DPM III Dew Point Meter in Use Probe Interchangeability
Complete Probe Interchangeability

Technical Data

Technical Data
Specifications Range Accuracy Resolution
Surface Temperature: -40° to 80°C ±0.5°C 0.1°C
80° to 190°C ±1.5°C
-40° to 175°F ±1°F 0.1°F
175° to 375°F ±3°F
Infrared Surface Temperature:* -70° to 380°C ±1°C + (0.01°C/°C)** 0.1°C
-94° to 716°F ±2°F + (0.01°F/°F)** 0.1°F
Air Temperature: -40° to 80°C ±0.5°C 0.1°C
-94° to 716°F ±1°F 0.1°F
Humidity: 0 to 100% ±3% 0.1%
Wind Speed:† 0 to 20 m/s ±3% Full Scale 0.1 m/s
0 to 44 mph 0.1 mph
Dew Point: -60° to 80°C ±3°C‡ 0.1°C
-76° to 175°F ±5.4°F‡ 0.1°F
Size & Weight: 6.25 x 2.4 x 1.2 in. (159 x 61 x 31 mm)
5.3 oz. (150 g) without batteries
* DPM IR models only
** At = 23°C
† DPM A models only
‡ Dependent on RH

Model Selection

Standard Models - Includes ALL features previously listed plus...

  • Storage of 2,500 datasets - stored readings can be viewed or downloaded
  • Auto Log mode runs unattended on batteries for up to 60 hours or continuously via USB

Advanced Models - Includes ALL features previously listed plus...

  • Storage of 250,000 datasets in up to 1,000 batches
  • Enhanced Auto Log mode turns the gage off between readings for up to 8 months of battery life. Each reading can be uploaded to PosiSoft.net or an FTP server using WiFi. Automatically group readings into batches at daily, weekly, or monthly intervals.
  • User defined limits for all parameters - visible and audible warnings. Receive email alerts when connected to WiFi.
  • Trend Charts graph readings in real-time
  • Touchscreen keyboard for quickly renaming batches, adding notes, and more
  • Wet bulb temperature can be displayed and recorded
  • WiFi technology wirelessly synchronizes with PosiSoft.net and downloads software updates
  • Bluetooth 4.0 Technology for data transfer to a mobile device running the PosiTector App or optional portable printer. BLE API available for integration into third-party software.
  • Integrate with third-party software, drones, ROVs, PLCs, and robotic devices using several industry-standard communication protocols


Built-in Probe (DPM) PosiTector DPM III Dew Point Meter Built-in Probe
  • Integral probe with Direct Contact Surface Temperature Sensor
  • Measures dew point, relative humidity, air temperature and surface temperature



Built-in Probe w/Cabled Surface Temperature Sensor (DPMS) PosiTector DPM III Dew Point Meter Magnetic 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
Additional Sensors for DPMS Probe (K-Type Thermocouple Sensors)
  • A. Hand-held Surface Temperature Sensor - for spot checking hard-to-reach surfaces
  • B. Self-adhering Surface Temperature Sensor - sticks to solid materials including aluminum, wood, concrete, etc. Ideal for unattended monitoring
  • C. Liquid Temperature Sensor - general purpose sensor with stainless steel shaft
  • Easily converts to accept other optional K-type sensors.
PosiTector DPM III Dew Point Meter Probes



Built-in Probe with Wind Speed Sensor (DPMA) PosiTector DPM III Dew Point Meter Wind Sensor Probe
  • Includes the ambient temperature, surface temperature, and humidity sensors from PosiTector DPM Built-in Probe plus a hot wire anemometer
  • Anemometer mode measures air temperature, relative humidity and wind speed
  • Auto-rotating display for inverted use
  • Wind Speed Range: 0-20 m/s, 0-44 mph, 0-65 ft/s, 0-3900 ft/m, 0-72 km/h, 0-38 knots
  • Wind Speed Accuracy: ± 3% Full Scale



Cabled Probe with 1/2" NPT Threads (DPMD) PosiTector DPM III Dew Point Meter Cabled Probe
  • Measures dew point, relative humidity and air temperature (shown)
  • Sintered aluminum housing protects sensors
  • 1/2" NPT threads for insertion into tanks and pipes (max 200 psi/ 1.3 MPa)



PosiTector DPM IR Probe (DPMIR) PosiTector DPM III Dew Point Meter IR Probe
Includes the ambient temperature and humidity sensors from the PosiTector DPM Integral Probe plus an infrared surface temperature sensor.
  • Measures and records environmental conditions including RH, air temperature, surface temperature, dew point temperature, the difference between surface and dew point temperatures.
  • Non-contact surface temperature sensor
  • Measures hard to reach areas and moving parts
  • 4:1 Distance to spot ratio (D:S), optimized for measuring large surfaces, ideal for quickly scanning large structures.
  • Pre-programmed and user adjustable emissivity options

Probe Comparison Chart

Probe Comparison Chart - Select from 5 PosiTector DPM probes
Probe Style DPM
Built-In Probe with Direct Contact Surface Temperature Sensor
Built-In Probe with Infrared Surface Temperature Sensor
Built-In Probe with K-type Cabled Surface Temperature Sensor
Built-In Probe with Wind Speed Sensor
Cabled Probe with 1/2” NPT Threads
Comparison Chart: PosiTector DPM III Dew Point Meter DPM Probe PosiTector DPM III Dew Point Meter DPMIR Probe PosiTector DPM III Dew Point Meter DPMS Probe PosiTector DPM III Dew Point Meter DPMA Probe PosiTector DPM III Dew Point Meter DPMD Probe
Surface Temperature:  
Air Temperature:
Wet Bulb Temperature:*  
Relative Humidity:
Dew Point Temp.:
Surface Temp. minus Dew Point Temperature:  
Wind Speed:        
*Wet Bulb Temperature is displayed/recorded on Advanced models only

Positector DPM Video


Prices subject to change    Prices listed in US dollars for domestic shipments within US, Canada, & Mexico only    Export orders require quotations - click here for a quote     For more info call us 1-800-762-2478 or 954-946-9454.
Item Number Item Prices

Humidity, air & surface temperature sensors, Protective rubber holster with belt clip, Wrist strap, 3 AAA alkaline batteries, Instructions, Nylon carrying case with shoulder strap, Protective lens shield, Long Form Certificate of Calibration traceable to NIST, USB cable, Two (2) year warranty.
WE-611101 PosiTector DPM, Standard $715.00
WE-611103 PosiTector DPM, Advanced 1,135.00
WE-611111 PosiTector DPM Probe Only 415.00
WE-611121 PosiTector DPMS, Standard 815.00
WE-611131 PosiTector DPMS Probe Only 515.00
WE-611141 PosiTector DPMA, Standard 845.00
WE-611153 PosiTector DPMD, Standard 725.00
WE-611161 PosiTector DPMIR1, Standard 765.00


  By Category Email Registry How to Order Contact Info
  By Industry Trade Shows Request Quote History
  New Products Test Lab Info Order Form FAQ's
  Sales/Trade-In Offers Articles/Links Repairs/Service Policies

  © 2020 Paul N. Gardner, a BYK Instruments Company | Contact | Policies Facebook  YouTube  Blogger