Extech Instruments Humidity-Temperature Chart Recorder RH520 用户手册
RH520 V2.9 3/07
3
Specifications
Display
Large,
backlit
graphical
LCD
Temperature measurement range
-20.0 to 140.0
o
F (-28 to 60
o
C)
Humidity measurement range
10 to 95%
Dew point temperature
-20.0 to 140.0
o
F (-28 to 60
o
C)
Accuracy
±3.0% RH and 1.8
o
F (1
o
C) for temperature
Internal memory storage
49,152 complete reading sets
Sampling interval
Selectable recording rate: 0.1 to 199.9 minutes
Graph scaling
User selectable in 10
o
F, 5
o
C and 10% increments
Low battery indication
5-segment battery indicator
Power supply
Three (3) ‘AA’ batteries and AC adaptor (included)
Battery life
4 weeks typical, using alkaline batteries
Operating Temperature
CONTROL MODULE and DISPLAY:
32 to 120
o
F (0 to 50
o
C)
SENSOR: -20 to 140
o
F (-28 to 60
o
C)
Operating Humidity
CONTROL MODULE and DISPLAY:
90% RH max.
SENSOR:
95%
RH
max.
Dimensions
5.0 x 7.7 x 0.9" (127 x 196 x 23mm)
Weight
12.6oz
(357g)