HOBO® External Temp/RH Data Logger (UX100-023A) Manual
22934-A
The HOBO External Temp/RH data logger records temperature and relative humidity in an indoor
environment with its external sensor. Using HOBOware®, you can easily configure the logger
alarm to trip for specific high or low sensor readings. Or, you can set up burst logging in which the
logger records data at a different interval during certain conditions. The logger can also calculate
minimum, maximum, average, and standard deviation statistics. This compact data logger has a
built-in LCD screen to monitor the current temperature, relative humidity, logging status, battery
use, and memory consumption in between readouts.
Specifications
Temperature Sensor
Range
-20° to 70°C (-4° to 158°F)
Accuracy
±0.21°C from 0° to 50°C (±0.38°F from 32° to 122°F), see Plot A
Resolution
0.02°C (0.04°F)
Response Time
3 minutes, 45 seconds in air moving 1 m/s (2.2 mph)
Drift
<0.1°C (0.18°F) per year
RH Sensor
Range
1% to 100% RH at -40° to 75°C (-40° to 167°F), non-condensing;
exposure to conditions below -20°C (-4°F) or above 95% RH may
temporarily increase the maximum RH sensor error by an additional
1%
Accuracy
±2.5% from 10% to 90% RH typical to a maximum of ±3.5% including
hysteresis at 25°C (77°F); below 10% and above 90% ±5% typical
Resolution
0.01%
Response Time
15 seconds to 90% in airflow of 1 m/s (2.2 mph)
Drift
<1% per year typical
Cable Length
1.83 m (6 ft)
Logger
Logger Operating Range
Logging: -20° to 70°C (-4° to 158°F); 0 to 95% RH (non-condensing)
Launch/Readout: 0° to 50°C (32° to 122°F) per USB specification
Logging Rate
1 second to 18 hours, 12 minutes, 15 seconds
Logging Modes
Fixed interval (normal), burst, or statistics
Memory Modes
Wrap when full or stop when full
Start Modes
Immediate, push button, date & time, or next interval
Stop Modes
When memory full, push button, or date & time
Restart Mode
Push button
Time Accuracy
±1 minute per month at 25°C (77°F), see Plot A
Power Source
One 3V CR2032 lithium battery and USB cable
Battery Life
1 year, typical with logging rate of 1 minute and sampling interval of
15 seconds or greater
Memory
128 KB (63,488 measurements, maximum)
Download Type
USB 2.0 interface
Full Memory Download Time
20 seconds
LCD
LCD is visible from 0° to 50°C (32° to 122°F); the LCD may react
slowly or go blank in temperatures outside this range
Size
3.66 x 8.48 x 1.52 cm (1.44 x 3.34 x 0.6 in.)
Weight
30 g (1.06 oz)
Environmental Rating
IP50
The CE Marking identifies this product as complying with all relevant
directives in the European Union (EU).
HOBO External
Temp/RH Data Logger
UX100-023A
Included Items:
•
Command™ strip
•
Double-sided tape
•
Hook & loop strap
Required Items:
•
HOBOware 3.7.16 or later
(download at
www.onsetcomp.com/
hoboware-free-download)
•
USB cable
