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|  |  | MeterMall USA |  Hygrometers / Psychrometers
 HD500 Psychrometer + 30:1 IR Thermometer
 -- $269.99
 -- HD500 Product Sheet
HD500 User Manual English / Spanish
Extech HD500 Features:
 
� Built-in InfraRed Thermometer for non-contact temperature measurement to 932�F (500�C) with 30:1 distance to target ratio
 
� Type K Temperature . . .Buy Now
 
 RH300 Psychrometer Hygro-thermometer
 -- $99.99
 -- RH300 Product Sheet
RH300 Features 
Simultaneous display of %RH, Temperature and Dew Point or Wet Bulb or Probe Temperature 
Calculates T1-T2 differential (Air Temperature minus External Probe Temperature) using T2-Dew Point and optional probe . . .Buy Now
 
 RH350 Super Heat Psychrometer
 -- $149.99
 -- RH350 Product Sheet English / SpanishRH350 User Manual English / Spanish
RH350 Features 
Dual Type K probe inputs (T1, T2)
Superheat differential measurements : T1-T2, Air-T1, and T1-Dew Point  
Backlit LCD displays 3 parameters:    . . .Buy Now
 
 
 RH401 Psychrometer plus Infrared Thermometer
 -- $199.99
 -- RH401 Product Sheet
RH401 User Manual English / Spanish
RH401 Features 
Triple display option with backlighting:   - View Air temp + RH + surface temp   - View Dew Point + RH + surface temp   - View Wet Bulb + RH + surface . . .Buy Now
 
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 instruments that measure and datalog temperature, humidity, airflow, pressure, gases, light, RPM, pH, weight, water quality, weather
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