Extech RH350 Dual Input Hygro-Thermometer Psychrometer

Item #:

EXT-RH350

Brand:

Extech

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RH350 Dual Input Hygro-Thermometer Psychrometer by Extech

Superheat differential measurements: T1-T2, Air-T1, T1-Dewpoint
Dual Type K external temperature probe inputs (T1, T2)
Simultaneous display of %RH, Temperature and Dew point or Wet Bulb or External Probe Temperatures
Built-in RS-232 interface � uses optional Windows® 95/98/2000/ME/NT/XP compatible software
Retrieve Max/Min readings with data and time plus Average function
Real time clock
Triple display with backlighting
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
Auto power off to save battery life
Complete with two Type K bead wire temperature probes and 4 AAA batteries

General Specifications

Display	Triple LCD
Sensor Type	Humidity: Precision capacitance sensor; Temperature: Thermistor; External Temperature: K-Type Thermocouple
Response Time	60 seconds typical
Dew Point	-68 to 50°C (-90.4 to 122.0°F) (calculated from RH and Air temperature measurements)
Wet Bulb	-21.6 to 50°C (-6.88 to 122.0°F) (calculated from RH and Air temperature measurements)
Low Battery Indicator	Yes
Overrange Indicator	E2 (air) E5 (T1), E8 (T2)
Underrange Indicator	E3 (air), E6 (T1), E9 (T2)
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	4 x 1.5V 'AAA' batteries
Battery Life	Approx. 300 hours
Dimensions / Weight	230 x 57 x 44mm (9 x 2.2 x 1.7"); 153g (5.3 oz.)

Range Specifications