HT-4000 thermo-hygrometer

Moisture meter

HT-4000 thermo-hygrometer

Temperature: -40°C - 124°C (-40°F - 255°F)
Dew Point: -40°C - 80°C (-40°F - 176°F)
GPP Range: 0.1 - 3820 GPP (0.01 - 545 GPK)
Vapor pressure: 0 - 7 PSI (0 - 47 KPA)

Temperature, Dew Point, GPP, GPK, Vapor Pressure

Delmhorst is proud to present the HT-4000, a stand-alone thermo-hygrometer for flooring installers and restoration contractors alike. The HT-4000 has the same fast acclimating RH/T sensor found in our popular TotalCheck and Navigator Pro 3-in-1 moisture meters. For contractors who prefer having separate meters to one combination meter, the HT-4000 is the perfect solution. The meter’s sensor is also detachable, making the HT-4000 ideal for testing a concrete slab (if needed, even according to the ASTM F2170 standard)

Your Benefits:
  • Bright, clear digital display
  • Relative Humidity Range: 0% - 100%, sensor can be used for in-situ concrete testing following the ASTM F170 standard
  • Temperature Range: -40°C - 124°C (-40°F - 255°F)
  • Dew Point Range: -40°C - 80°C (-40°F - 176°F)
  • GPP Range: 0.1 - 3820 GPP (Grains Per Pound)
  • GPK Range: 0.01 - 545 GPK (Grains Per Kilogram)
  • Vapor Pressure Range: 0 - 7 PSI (Pounds Per Square Inch)
  • Vapor Pressure Range: 0 - 47 KPA (Kilopascals)
  • Built-in back-light makes reading in dark places a cinch
  • Auto shut-off timer saves battery life
  • Reading HOLD Feature
  • Size: 22x9x4,5cm (8 ½” x 3 3/8” x 1 ¾”)
  • Weight: 312gr. (11 oz.)
  • Rugged construction ensures years of reliable use
  • Sturdy plastic carrying case
  • 9V battery
  • 1-year warranty.
HT-4000 thermo-hygrometer 


No electrodes needed
HT-4000 thermo-hygrometer

Detachable relative humidity/temperature sensor that is included with Total Check and HT-4000F.

Can be used to obtain ambient RH/T readings, or for performing tests on concrete.

Can be used to perform tests on concrete according ASTM F-2170 norm.
Extension cable, connects to the
RH/T-S sensor, allowing you to easily view your meter’s screen while performing tests on concrete.
Plastic sleeve required when performing ASTM F-2170 tests on concrete.

Used with the RH/T-S sensor.
HT-4000 thermo-hygrometer

Downloads & Videos
Manual:Download pdf
Brochure:Download pdf

HT-4000 thermo-hygrometer

Information request

Product group Environment
MaterialRelative humidity

HT-4000 thermo-hygrometer

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HT-4000 thermo-hygrometer


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