Delmhorst Instrument HT-4000 - Manual (Page 2)

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GENERAL DESCRIPTION & FEATURES
Thank you for your purchase of Delmhorst Instrument Co’s newly designed HT-4000 handheld
thermo-hygrometer. The HT-4000 offers the latest in features and functionality. , The meter is
easy to operate, measures ambient temperature, relative humidity, and calculates dewpoint,
absolute humidity (grains per pound), and vapor pressure. We recommend that you read the
following pages in detail to take full advantage of all that the HT-4000 has to offer.
Specifications:
o Measures RH over the range of 0-100% (with accuracy of +/- 2% over
10%-90%)
o Measures temperature over the range of -40°F-255°F with accuracy of +/-
1.8°F over -4°F to 158F (range of -40°C - 124°C with accuracy of +/- 1°C
over -20° to 70°C)
o Calculates Dew Point over the range of -40°F - 176°F (-40°C - 80°C)
o Calculates GPP (Grains Per Pound) when in Fahrenheit mode over the
range of 0.1-3820 GPP
o Calculates GPK (Grains Per Kilogram) when in Celsius mode over the
range of 0.01-545 GPK
o Calculates PSI (Pounds Per Square Inch) when in Fahrenheit mode over
the range of 0-7 PSI
o Calculates KPA (Kilopascals) when in Celsius mode over the range of 0-
47 KPA
o Operating temperature - -4 to 158F (-20 to 70C)
o Sensors - RH/T-S1 for water damage/restoration and general industrial
applications; RH/S2 for in-situ concrete floor slab testing (ASTM F2170)
Features:
o Detachable RH Sensorwith optional extension cable (RH/T-C1)
o LCD backlit display
o 9V battery (included)
o 1-year warranty
o Carrying Case (included)