Extech
Humidity Meters
Psychrometers \ Hygro-ThermometerFor example:
1-HD500: Psychrometer with InfraRed Thermometer Humidity, Type K Thermometer and 30:1 InfraRed Thermometer
Features:
-Built-in InfraRed Thermometer for non-contact temperature measurement to 932°F (500°C)
-IR Thermometer: 30:1 distance to target ratio
-Type K Thermometer for contact temperature measurement to 2501°F (1372°C)
-Large triple LCD backlit display
-2% RH accuracy
-Min/Max, Data hold and Auto power off functions
-Built-in USB port
-Includes Windows® compatible software with USB cable, Type K bead wire probe (-4 to 482°F/-20 to 250°C), carrying case and 9V battery
2-RH490: Precision Hygro-Thermometer Highest 2% RH accuracy with Grains Per Pound (GPP) Display
Features:
-Less then 30 seconds of RH response time
-Water vapor in GPP
-Dual backlit display
-Simultaneous display of: Humidity/Temperature, Humidity/Dew Point or Humidity/Wet Bulb
-Slim design with rubberized side grips
-Data Hold and Min/Max functions
3-EA20: EasyView™ Hygro-Thermometer Dual display of RH, Temperature, Dew Point and Wet Bulb
Features:
-Large LCD displays any two parameters simultaneously
-Data Hold, Relative, Min/Max, Programmable power off timer
-Stores up to 99 manual readings for display recall
-Includes probe with 39" (1m) cable
4-Extech 445703: Big Digit Hygro-Thermometer 1" Digits on super large LCD
Features:
-Max/Min with "reset" function
-Humidity: 10 to 99% RH
-Temp: 14 to 140°F or -10 to 60°C
-Accuracy: ±5%RH; ±1.8°F, ±1°C