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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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Amprobe TH-3 Relative Humidity (RH) Temperature Meter

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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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