The TH-3 uses a precision capacitance sensor to deliver accurate performance with long term stability. This high accuracy instrument measures the full range of relative humidity from 0% to 100% and features an exceptionally wide ambient temperature measurement range from -20 °C (-4 °F) to 60 °C (140 °F).

The sensor is mounted on a long shaft extending from the top surface of the unit, making probing into ductwork and hard to reach areas more easy. The large LCD displays two measurements simultaneously with a full range of display options including Hold, Min, Max, and Relative. The TH-3 is a complete package and comes with soft carrying case, sensor cover, battery and manual.
 

Function

Range

Accuracy

Humidity Measurement
 

0% R.H. to 100% R.H.

±3% R.H. at 23°C

5% R.H. to 95% R.H.
<5% R.H. >90% R.H.

±5% R.H. at 23°C
 

Temperature Coefficient
 

0.1 x specified accuracy/°C,23°C, >23°C

Resolution

0.1% R.H.

Temperature (Dry Bulb)
 

-20°C to 60°C

±0.8°C

-4°F to 140°F

±1.6°F

Resolution

0.1°C/0.1°F

Response Time (in slowly moving air)

Humidity

180 seconds

Temperature

10 seconds