HIPP - Hygro-i2 Probe


The Tramex Hygro-i2 ® relative humidity probe is the most advanced, resilient and reusable RH probe on the market today, allowing the user to perform in situ and hood type RH testing to comply with ASTM F2170 for the flooring industry, and is ideal for use by Flood & Water Damage Restoration and Indoor Air Quality professionals. The speed and accuracy of the Tramex Hygro-i2® probes set them apart from all other RH probes on the market. The confidence in knowing you are testing with the best and fastest RH probe, together with the complete Tramex concrete moisture testing system, brings reliability and peace of mind in concrete moisture meters to a whole new level.


Hygro-i2 Probes are available in packs 1, 3, 6, 12, 25, 50 and 100. Product Codes HIPP1, HIPP3, HIPP6, HIPP12, HIPP25, HIPP50, HIPP100.



  • Fast acclimation time
  • Reusable Hygro-i2 ® Relative Humidity sensors prove to be the lowest cost per ASTM F2170 test
  • Best in class accuracy, even at high RH >90%
  • Proven robustness, durability and reliability
  • Accurate, durable and best in class
  • Testing per ASTM F2170, giving in situ relative humidity and ambient RH, temperature, dew point temperature & grains per pound
  • Relative Humidity range:  0% to 100%
  • Fastest Temperature response time
  • Best temperature accuracy of +/-2º over 32ºF to 194ºF (0ºC to 90 ºC)
  • Temperature Range: -40ºF to 257ºF (-40ºC to 125ºC)


Please note that the RHIE2 Electronic Interface Cable is needed to connect the Hygro-i2 Probe.


Product Order Code: RHIE2 (For use with CMEX2 and MRH3)
Product Order Code: RHIE2B (For use with Feedback DL-RHTX and CMEX5)


Used in conjunction with the Tramex CMEX II or the Tramex MRH III non-destructive moisture meters, the Hygro-i2 ® probe provides measurements of relative humidity, temperature, dew point and grains per pound in structural materials such as concrete flooring and walls, as well as the ambient conditions within the building envelope, all shown simultaneously on one clear display.

The Hygro-i2 ® probes are reusable, paying for themselves after a few uses compared to single-use, disposable RH probes. Calibration checks can be carried out using the calibration check salts.




Range: 0 to 100%RH                  

Accuracy: 0% to 99%RH ±2.0%RH (@ 77ºF (25ºC))

Resolution: 0.1% over the complete range

Drift: <0.25%RH per year




Range: -40ºF to 257ºF (-40ºC to 125ºC)

Accuracy: ±0.1ºF

Range 68ºF to 140ºF (±0.1 °C Range 20°C to 60°C) Sensor Protection:                            

PTFE Film protects sensor opening from water & dust Drift: <0.04ºF (0.03ºC) per year NIST traceable. (National Institute of Standards and Technology)

Related Products

Calibration Salt Check


Calibration Salt Check for Hygro-i probes. Designed to produce a 75% RH environment within the chamber which may be used to ensure the calibration of the Hygro-i ® RH probe is optimum.

Tramex Hygro-i2® 19mm Hole Liners


Hygro-i2® Hole Liners and Caps for use with Tramex Hygro-i2® relative humidity sensors. To perform ASTM F2170 in situ RH testing of concrete floors and slabs.

Concrete Moisture Encounter X5 - CMEX5


The Concrete Moisture Encounter X5 (CMEX5), is The Digital Multi Moisture Meter for Concrete designed and built by Tramex Meters for the specific needs of many industries including the Flooring, Water Damage Restoration, Inspection, Surveying and Indoor Air Quality industries. Bluetooth connection allows for continual development and integration of apps and reporting to accompanying IOS & Android App.

Feedback Datalogger Starter Kit


The Tramex Feedback DataLogger and App have been designed and developed by Tramex for professionals who depend on accurate, reliable readings using the very best, state of the art technology and performing ASTM F2170.