Extech RH305 Hygro-Thermometer Psychrometer Kit

Item #:

EXT-RH305

Brand:

Extech

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RH305 Hygro-Thermometer Psychrometer Kit by Extech

Simultaneous display of %RH, Temperature and Dew point or Wet Bulb or Probe Temperature
Wet bulb measurements without slinging
Calculates T1-T2 differential (Air Temperature minus External Probe Temperature) using optional probe (TP890) and T2-Dew Point
Unique sensor cap design twists to closed position for protection during storage
Switchable °F/°C temperature units with 0.1° resolution
Data Hold freezes current reading on display
Max/Min readings
Auto power off to save battery life
RH300 complete with 2 AAA batteries
Optional external temperature probe (TP890)
Optional kit RH305 includes RH300, temperature probe, 33% and 75% calibration bottles, and carrying case

General Specifications

Display	Triple LCD
Sensor Type	Humidity: Precision capacitance sensor; Temperature: Thermistor
Response Time	60 seconds typical
Dew Point	-90.4 to 122.0°F (-68 to 50°C) (calculated from RH and Air temperature measurements)
Wet Bulb	-6.88 to 122.0°F (-21.6 to 50°C) (calculated from RH and Air temperature measurements)
Operating Conditions	-20 to 50°C (-4 to 122°F); < 99% RH non-condensing
Storage Conditions	-40 to 85°C (-40 to 185°F); <99% RH non-condensing
Power Supply	2 x 1.5V 'AAA' batteries
Battery Life	Approx. 80 hours
Dimensions / Weight	178.5 x 48.8 x 25.2mm (7 x 1.9 x 1"); 140g (4.9 oz.)

Range Specifications