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Wireless Protimeter HygroTrac Sensor (BLD9050) HygroTrac System

Model #: POL9050
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Protimeter HygroTrac Wireless Sensor (BLD9050) for use HygroTrac System The Protimeter HygroTrac is a simple and cost-effective system for remote environmental monitoring in buildings. Data can be viewed live over the internet showing parameters such as moisture content relative humidity and temperature.
  • Set threshold alarms
  • Receive alarm warning via email and text message
  • Comprehensive site reports
  • Reduce costly site visits

Small HygroTrac wireless sensors are placed into a building and readings are sent to the data acquisition gateway. The data acquisition gateway is connected to a dedicated and secure web server via Ethernet or phone line. The measurements can then be viewed from any internet connection using a secure password to access results. Up to 600 sensors can report through one gateway at a transmission range of 150-400ft dependant on building construction materials.

Wireless Sensors transmit data at user-selected intervals to data acquisition gateway.
  • Nominal transmission distance to gateway: 150' (46m); Transmission distance varies, based on many factors, including the presence of obstacles such as concrete walls and interference from other electronic equipment.
  • Measures relative humidity RH and temperature
  • % moisture content in wood
  • Measures % WME in masonry, drywall and other materials of construction
  • Transmission Frequency:
    • US and Canda: 915 MHz unlicensed band
    • Europe: 868 MHz unlicensed band
  • Dimensions: 2.25" x 1.5" x 2.25" (60 x 30 x 60mm)
  • Weight: 2.42 oz (68g)

% RH/Temperature Sensor

  • % RH Range: 0 to 100% (non condensing)
  • % RH Accuracy: 2.5% (from 10 to 90%)
  • Temperature Range: -40 to 185F (-40 to 85C)
  • Temperature Accuracy: 1F (0.5C) at 77F (25C)
  • Battery Life: 15 years nominal, when reporting hourly

Moisture Sensor (Pin type resistance)

  • Range: 8 to 40%
  • Accuracy: 1% in wood; 10 to 25% subject to adjustments for species and temperature
  • Calibration Temperature: 68F (20C)

Data Acquisition Gateway

  • Receives data from up to 600 sensors
  • Transmits data to secure internet via 10 MPS Ethernet output & Dial on demand phone modem
  • Onboard back up data storage
  • 10 sensors reporting every 1 hour = ~ 1 year of data
  • Addition storage on SD card up to 2 GB card (not supplied)
  • Dimensions: 7.5" x 4.9" x 1.6" (190 x 125 x 40mm)
  • Weight: 10.8oz (305 g)
  • Power Requirement: 3.3 V power supply (included)

Data Acquisition Gateway: Data collection point receives and stores data from all wireless measurement sensors. Information is then sent to a secure web server. Data can also be stored directly on the gateway if an internet connection is not available.

Web Data Service: Access data and produce reports over any internet connection. Name individual sensors. Graphical display of readings. Secure access. Data access fees apply. See for latest rates.


  • Permanent installation into a wide range of building environments where moisture and subsequent mold growth is a concern.
    • Provides early warning of potential moisture-related problems that can lead to damaged property and
      potential health risk to building occupants.
    • Monitor storage facilities where moisture sensitive products are held such as paper and timber.
  • Heritage or historic buildings
  • Museums
  • Food storage
  • Apartment buildings
  • Shipping containers
  • Animal sanctuaries
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