Extech RH401 Psychrometer IR Temperature and Humidity Meter

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Extech RH401 Psychrometer IR Temperature and Humidity Meter is designed to measure air temperature, RH, surface temperature, dew point, and wet bulb. The Extech RH401 features an 8:1 distance to spot ratio, laser guide for improved aiming, retractable humidity capacitance sensor for safe storage and transportation, and simultaneous display of various sets of three measurements.

MFG Part No.: RH401

Availability: Replaced by HD500

Description
Features
Specifications
Applications
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Characteristics:	Extech RH401 Psychrometer IR Temperature and Humidity Meter
	Measures temperature without direct contact
	Backlit LCD with simultaneous display of Air temperature, RH, Surface temperature or Dew Point, RH, Surface Temperature or Wet Bulb, RH, and Surface temperature
	Integrated IR thermometer features laser guide to improve aiming
	IR Thermometer features 8:1 distance to spot ratio
	Humidity capacitance sensor is retractable - protecting it during storage and transportation
	Unit calculates T1 (IR Surface Temperature) - DP (Dew Point) differential temperatures
	Adjustable automatic shut-off
	Indicates when battery is low
	Features over-range and under-range indications
	Integrated RS-232 interface for PC compatibility
	Comes with 4 - AAA batteries and carrying case

Specifications:	Extech RH401 Digital Psychrometer and IR Thermometer
Sensor Type:	Capacitance
Dew Point Range:	-90.4 to 122°F (-68.0 to 49.9°C)
Accuracy:	+- 1.8°F (+- 1.0°C); 0 to 100%RH (+- 3%RH)
Wet Bulb Range:	-6.9 to 122°F (-21.6 to 49.9°C)
IR Temperature:	-40 to 932°F (-40 to 500°C)
IR Emissivity:	Adjustable 0.3 to 1.0

Specifications:	Extech RH401 Psychrometer IR Temperature and Humidity Meter
	Non-contact InfraRed surface temperature measurements in hard to reach areas such as heating and air conditioning duct.
	Humdity monitoring in schools, offices and manufacturing or storage areas.
	Monitor Wet Bulb, Dew Point, Relative Humidity and Temperature in factories, clean rooms, offices, and greenhouses.

Extech RH401 Psychrometer IR Temperature and Humidity Meter

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