User Manual

RH401 V1.4 09/04
2
C
%
H
umi
DP
Wb
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2
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5
4
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15
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Specifications
Function Range and Resolution Accuracy
Humidity 0.0 to 100.0% RH ±3% RH (10 to 90%)
Temperature (Air) -4.0 to 122.0
o
F (-20 to 50
o
C) ±1.8
o
F (±1
o
C)
-4 to 842
o
F (-20 to 450
o
C)
±3% reading or ±3
o
C/6
o
F
whichever is greater
Temperature (InfraRed)
(@25ºC ±5ºC)
-40 to -4
o
F, 842 to 932
o
F
-40 to -20
o
C, 450 to 500
o
C
±4% reading or ±4
o
C/8
o
F
whichever is greater
Display Triple LCD with backlight
Sensor Type Humidity: Capacitance sensor; Temperature (air): Thermistor
Dew Point -90.4 to 122.0
o
F (-68 to 50
o
C) (calculated from humidity and
temperature measurements)
Wet Bulb -6.9 to 122.0
o
F (-21.6 to 50
o
C) (calculated from humidity and
temperature measurements)
IR Emissivity Adjustable from 0.3 to 0.99
IR Spot/Distance Ratio 8:1
IR Response Time 0.5 seconds
Operating Conditions -4 to 122
o
F (-20 to 50
o
C); < 99% RH non-condensing
Storage Conditions -40 to 185
o
F (-40 to 85
o
C); <99% RH non-condensing
Power Supply 4 x 1.5V ‘AAA’ batteries or AC adaptor
Battery Life approx. 150 hours (laser inactive); 30 hours (laser active)
Dimensions / Weight 6.8x2.7x1.9” (175x70x50mm); 4.9 oz. (140g)
Meter Description
1. Emissivity adjust indicator
2. Laser pointer on indicator
3. Low Battery indicator
4. IR Surface Temperature button
5. ON/OFF/Setup button
6. Back Light button
7. Laser/Down button
8. °F/°C/Up button
9. Dew Point/Wet Bulb button
10. % Humidity display
11. Air Temperature, Dew Point or Wet Bulb display
12. IR Surface Temperature display
13. Extended probe with Humidity &
Air Temperature Sensors
14. PC interface port
15. AC adaptor jack
Note: The battery compartment is located on the rear of the instrument