Amprobe THWD-3 Relative Humidity Temperature Meter

Digital Sling Psychrometer w/ Dew & Wet Bulb
(click photo for larger Image)
 

Amprobe THWD-3 Digital Sling Psychrometer
 AM-THWD-3
 $119.95  $113.95

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Digital Sling Psychrometer w/ Dew & Wet Bulb Reading

Amprobe THWD-3 Digital Sling Psychrometer w/ Dew & Wet Bulb ReadingThe THWD-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, Dew Point (DP) and Wet Bulb (WB).

The THWD-3 comes with soft carrying case, sensor cover, battery and manual

Features:
  • Dual display
  • Extended probe stem to easily access air ducts
  • Dew Point
  • Wet Bulb
  • Min/Max readings
  • Data Hold
  • Capacitive sensor with protective cover
  • Auto Power off
  • Carrying Case
     
Altitude:   Up to 2000 meters
Sample Rate:   2.5 times per second
Battery Life:   85-hours continuous (with alkaline battery)
Size:   240 x 54 x 34 mm (9.5 x 2.1 x 1.3 in.)
Weight:   Approximately 180 g (6.4 oz.)
Warranty:   One year
 
Specifications:
 

Function

Range

Accuracy
Measurement Ranges
Humidity 0 % RH to 100 % RH
5 % RH to 95 % RH:
<5%RH, >95% RH
±3 % RH @ 23 °C 
±5 % RH @ 23 °C
Temperature Coefficient:

0.1 x specified accuracy/ °C <23 °C, >23 °C
Resolution  0.1 %RH  
Temperature
(Dry Bulb)		 -20 °C to 60 °C:
 -4 °F to -140 °F		 ±0.8 °C
±1.6 °F
Dew Point (DP) -20 °C to 60 °C:
-4 °F to -140 °F		 ±0.8 °C
±1.6 °F
Web Bulb (WB) -20 °C to 60 °C:
-4 °F to -140 °F		 ±0.8 °C
±1.6 °F
Resolution 0.1 °C/0.1 °F  
Response time (in slowly moving air)
Humidity 180 sec  
Temperature 10 sec  

* * * * * * * *

Relative Humidity Temperature Meter
 Comparison Chart

SPECIFICATIONS
TH-3 & THWD-3
%RH Accuracy @ 23 °C		 <10, >90 %RH ± 5.0 %RH
10 to 90 %RH ± 3.0 %RH
Temperature coefficient:
0.1x(specified accuracy)/ °C (<23 °C or >23 °C)
Temperature Accuracy -20 to 60 °C ± 0.8 °C
-4 to 140 °F ± 1.6 °F
THWD-3 (only)
Wet Bulb & Dew Point
Temperature Accuracy		 -20 to 60 °C ± 0.8 °C
-4 to 140 °F ± 1.6 °F

 

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