RH490-NIST : Hygro-Thermometer with Grains Per Pound Display, with NIST 

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

Specifications

• Humidity : 0 to 100%RH
• Temperature (Internal) : -22 to 199°F (-30 to 100°C)
• Basic Accuracy : ±2%RH, ±1.8°F/1°C
• Max. Resolution : 0.1%RH, 0.1°F/°C
• Dewpoint : -22 to 199°F (-30 to 100°C)
• Wet Bulb : 32 to 176 °F (0 to 80°C)
• Absolute Humidity : 0 to 1120GPP (0 to 160g/kg)
• Dimensions : 7.8x1.7x1.3" (200x45x33mm)
• Weight : 7oz (200g)