Specifications - Extech Instruments RH490 User Manual

Specifications

Function Range and Resolution
Humidity
10.0 to 90.0%RH
90.0 to 100.0%RH
Temperature
Wet Bulb 0 to 80°C (32 to 176°F)
Dew Point -30 to 100°C (-22 to 199°F)
0 to 1120 GPP (grains per pound)
Mixing Ratio
0 to 160 g/kg (grams per kilogram)
Display
Response Time:
Operating Conditions 0 to 50
Storage Conditions
Power Supply
Battery Life
Dimensions / Weight 200 x 45 x 33mm (7.8 x 1.7 x 1.3"); 200g (7 oz.)
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0.0 to 10.0%RH
o
-22.0 to – 3.9 F
o
-30.0 to -19.9 C
o
-20.0 to 70.0 C
o
-4.0 to 158.0 F
o
70.1 to 100.0 C
o
158.1 to 199.0 F
Dual LCD
<30 seconds (90% of final value in moving air)
o o
C (32 to 122 F); < 80% RH non-condensing
o o
-40 to 85 C (-40 to 185 F); <99% RH non-condensing
9 Volt battery
Approx. 24 hours
6
Accuracy
±3%RH
±2%RH
±3%RH
o
±2.7 F
o
±1.5 C
o
±1 C
o
±1.8 F
o
±1.5 C
o
±2.7 F
Calculated from RH and air
temperature measurements
RH490-EU V2.0 12/06