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Home  >>  Products  >>  Moisture/Air/Temperature  >>  Feedback Data Loggers

Feedback Data Loggers

The Feedback DataLogger and App have been designed for Temperature and Relative Humidity Measurement and developed for professionals who depend on accurate, reliable readings using the very best, state of the art technology. It can log up to 100,000 data point entries for relative humidity, temperature, dew point and grains per pound, transmitted wirelessly via Bluetooth BLE technology to your mobile device.

Feedback Data Loggers DL-RHTX





  • Bluetooth BLE enabled for use with mobile devices
  • On the App you can visualize Live Readings, Thermal Conditions and Psychrometric Charts as well as creating and exporting spreadsheets, charts and reports.
  • Up to 100,000 data point entries
  • Instant set up and start modes
  • Precise Ambient Relative Humidity and Temperature logging (In-situ RH logging for DL-RHTX models only)
  • Intuitive and instructive App interface
  • Adjustable Interactive chart, spreadsheet, report and easy-export functions
  • Connectivity up to 165ft (50 meters) for highly accessible data downloads
  • Used to perform ASTM F2170 (DL-RHTX only)
  • The Feedback DataLogger requires the Tramex Feedback Data Logger App and a compatible iOS or Android mobile device.
  • Supported measurments include:
    • Ambient Relative Humidity, Temperature, Dew point, Grains per pound.
    • In Situ Relative Humidity, Temperature, Dew point, Grains per pound (for DL-RHTX model only with Hygro-i2 RH Probe)
    • Contact Temperature, Estimated contact RH, Ambient Dew Point, Contact Delta Temperature (with optional contact Temperature Probe)
    • Psychrometric chart showing Relative Humidity, Specific Volume, Wet Bulb Temperature, Dry Bulb Temperature, Enthalpy, Humidity Ratio, Dew Point.
Feedback Data Loggers in Use Feedback Data Loggers in Use


Technical Data

Technical Data
Size: 3.94" x 3.54" x 1.38" (100mm x 90mm x35mm)
Weight: 3.53oz (100g)
Construction: ABS enclosure
Power: 1 x AA type battery 1.5 Volt
Memory: 100,000 data point entries (samples of Ambient RH and temperature; SurfaceTemperature)
Logging Rate: Logger interval adjustable between 5 minutes and 1 hour
Transmission Range: Up to 165ft (50m) line-of-sight
Bluetooth: BLE Bluetooth Low Energy 4.2 compliant, Bluetooth 5 advertising
Power Supply: 1 x AA type battery 1.5 Volt
Battery life: Over 1 year based on logging intervals of 5mins, using an alkaline battery with a nominal voltage of 1.5V as supplied.
Certifications: CE: EN 61326-1
FCC: Part 15-J
ROHS Compliant
Included: Wall Mounting and Tripod Stand
With built-in Ambient RH + Temperature sensor; Plug-in Contact Temp Probe (optional) providing the best available accuracy tolerances of 1.5%RH & 0.1°F.
Relative Humidity Sensor Specifications
Range: 0 to 100%RH
Accuracy: ±1.5%RH Range 0% to 80%RH
±2.0%RH Range 80% to 99%RH (@ 77°F (25°C))
Resolution: 0.1% over the complete range
Drift: <0.25%RH per year
Temperature Sensor Specifications:
Range: -40°F to 257°F (-40°C to 125°C)
Accuracy: ±0.1°F Range 68°F to 140°F (±0.1°C Range 20°C to 60°C)
Sensor Protection: PTFE Film protects sensor opening from water & dust
Drift: <0.04°F (0.03°C) per year
Contact Temperature Probe Optional
Units: °F (°C)
Temperature Range: -20°F to +175°F (-30°C to +80°C)
Accuracy: ±0.9°F from 14°F to 185°F (±0.5°C from -10°C to +85°C)
Resolution: 0.1% over the complete range



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

Starter Kit - DL-RHTX Data Logger, 1 x Hygro-i2 RH probe, Wall mounting, Tripod, Hardshell Case and Connector Cable

TH-851112 Feedback Data Logger Starter Kit (ASTM Compliant) 399.00


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