Range*
Resolution
Accuracy at
77
℉
℉
(25
℃
℃
)
Temperature
measurements
-22 to 158
℉
(-30 to 70
℃
)
0.1°
± 0.9
℉
(0.5
℃
)
RH measurements
0.1 to 99.9%
0.1%
± 3% from 10 to
90% (otherwise
±5%)
Dew Point
calculation
32 to 122
℉
(0 to 50
℃
)
0.1°
n/a
Temperature sensor
NTC thermistor.
Relative humidity
(RH) sensor
Capacitive type.
USB Interface
USB 2.0 (no driver required).
Data log sample
rate
Programmable: 30 seconds, 5, 10, 30, 60, 90, and 120 minutes.
Data log start delay
Programmable: 0, 5, 10, 30, 60, 90, 120 minutes, and 24 hours.
Internal memory
24,000 temperature readings and 24,000 RH readings, maximum.
Alarm types
Single event, Cumulative (average), or OFF.
Meter power
4 x AA batteries (supplied). Optional 9 V adapter.
Battery life (typical)
Three (3) months with beeper disabled. Two (2) months with
beeper enabled.
Operating and stor-
age temperature
-20 to 70
℃
(-4 to 158
℉
)*
Operating and stor-
age humidity
< 90% RH, non-condensing.
Dimensions
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)
Weight
5.7 oz. (163 g)
*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
23
Summary of Contents for 42280A
Page 1: ...User Manual Temperature Humidity Datalogger Model 42280A...
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