Extech RH401 Digital Psychrometer + InfraRed Thermometer

Item #:

EXT-RH401

Brand:

Extech

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RH401 Digital Psychrometer + InfraRed Thermometer by Extech

Triple display with backlighting: View Air temp+RH+surface temp; View Dew Point+RH+surface temp; View Wet Bulb+RH+surface temp
InfraRed Thermometer with Built-in laser pointer, 8:1 distance to target ratio, Adjustable Emissivity from 0.3 to 1.0
Precision humidity capacitance sensor is retractable for protection during transportation and storage
Calculates T1 (IR Surface Temperature) - DP (Dew Point) differential
Programmable Auto power off and Low battery indication
Over-range/under-range alert indicator
Built-in RS-232 interface for capturing readings on a PC
RH401 complete with 4 AAA batteries and carrying case
Optional RH405 kit includes meter, 33% and 75% calibration bottles, RS-232 cable, 4 AAA batteries and carrying case

Monitor Wet Bulb, Dew Point, Relative Humidity and Temperature in factories, clean rooms, offices, and greenhouses
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

General Specifications

Display	Triple LCD with backlight
Sensor Type	Humidity: Capacitance sensor; Temperature (air): Thermistor
Dew Point	-90.4 to 122.0°F (-68 to 50°C) (calculated from humidity and temperature measurements)
Wet Bulb	-6.9 to 122.0°F (-21.6 to 50°C) (calculated from humidity and temperature measurements)
IR Emissivity	Adjustable from 0.3 to 0.99
IR Spot/Distance Ratio	8:1
IR Response Time	0.5 seconds
Operating Conditions	-4 to 122°F (-20 to 50°C); < 99% RH non-condensing
Storage Conditions	-40 to 185°F (-40 to 85°C); <99% RH non-condensing
Power Supply	4 x 1.5V 'AAA' batteries or AC adaptor
Battery Life	approx. 150 hours (laser inactive); 30 hours (laser active)
Dimensions / Weight	6.8x2.7x1.9" (175x70x50mm); 4.9 oz. (140g)

Range Specifications

Function	Range and Resolution	Accuracy
Humidity	0.0 to 100.0% RH	±3% RH (10 to 90%)
Temperature (Air)	-4.0 to 122.0°F (-20 to 50°C)	±1.8°F (±1°C)
Temperature (InfraRed) (@25°C ±5°C)	-4 to 842°F (-20 to 450°C)	±3% reading or ±3°C/6°F whichever is greater
Temperature (InfraRed) (@25°C ±5°C)	-40 to -4°F, 842 to 932°F -40 to -20°C, 450 to 500°C	±4% reading or ±4°C/8°F whichever is greater