Amprobe - 3311871 TH-1 Compact Probe Style Relative Humidity Meter

The Amprobe TH-1 relative humidity (RH) and temperature meter simultaneously measures relative humidity, dew point, and wet- and dry-bulb temperature to provide dual-scale readings in F and C, and is used for HVAC, indoor air quality, and environmental applications. The capacitive humidity sensor measures RH from 0 to 100 percent. The extended probe has a cover to protect the sensor when taking measurements inside ducts. The meter has minimum, maximum, and hold functions for recording data, and relative zero functionality stores reference points. It requires one 9V battery (included), and includes a carrying bag, and instructions.

Specifications

Temperature range -4 to 122 degrees F (-20 to 50 degrees C) Temperature accuracy + or - 1 degree F ( 0.6 degree C) RH accuracy + or - 4 percent from 10 to 95 percent RH, and + or - 5 percent at all other readings Wet bulb range 23 to 139.8 degrees F (-5 to 59.9 degrees C) Wet bulb accuracy + or - 1 degree F ( 0.6 degree C) Dew point range -4 to 13