Specifications - Extech Instruments 42280A User Manual

9

Specifications

Temperature
measurements
RH measurements
Dew Point
calculation
Temperature sensor
Relative humidity
(RH) sensor
USB Interface
Data log sample
rate
Data log start delay
Internal memory
Alarm types
Meter power
Battery life (typical)
Operating and stor-
age temperature
Operating and stor-
age humidity
Dimensions
Weight
*Note that the temperature sensor can measure down to -22℉ (–30℃) but the
meter should not be used below -4℉ (–20℃).
#NAS100123; r. AA/88670/88670; en-US
Range*
-22 to 158℉ (-30 to 70℃)
0.1 to 99.9%
32 to 122℉ (0 to 50℃)
NTC thermistor.
Capacitive type.
USB 2.0 (no driver required).
Programmable: 30 seconds, 5, 10, 30, 60, 90, and 120 minutes.
Programmable: 0, 5, 10, 30, 60, 90, 120 minutes, and 24 hours.
24,000 temperature readings and 24,000 RH readings, maximum.
Single event, Cumulative (average), or OFF.
4 x AA batteries (supplied). Optional 9 V adapter.
Three (3) months with beeper disabled. Two (2) months with
beeper enabled.
-20 to 70℃ (-4 to 158℉)*
< 90% RH, non-condensing.
Meter: 4.7 x 3.5 x 1.5 inches (121 x 89 x 38 mm)
Display: 2.0 x 2.5 inches (51 x 63 mm)
5.7 oz. (163 g)
Resolution Accuracy at
77℉ ℉ (25℃ ℃ )
0.1°
± 0.9℉ (0.5℃)
0.1%
± 3% from 10 to
90% (otherwise
±5%)
0.1°
n/a
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