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HOBO® Temp/RH 3.5% Data Logger (UX100-003) Manual 

16209-E 

The HOBO Temp/RH data logger records temperature and relative humidity (within 3.5% 
accuracy) in indoor environments with its integrated sensors. 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 

0.024°C at 25°C (0.04°F at 77°F), see Plot A 

Response Time 

4 minutes in air moving 1 m/s (2.2 mph) 

Drift 

<0.1°C (0.18°F) per year 

RH Sensor 

 

Range 

15% to 95% 

Accuracy 

±3.5% from 25% to 85% over the range of 15° to 45°C (59° to 113°F) 
including hysteresis; ±5% from 25% to 95% over the range of 5° to 
55°C (41° to 131°F) including hysteresis, see Plot B 

Resolution 

0.07% at 25°C (77°F) and 30% RH 

Response Time 

43 seconds to 90% in airflow of 1 m/s (2.2 mph) 

Drift 

<1% per year typical 

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 

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 C 

Battery Life 

1 year, typical with logging rate of 1 minute and sampling interval of 
15 seconds or greater 

Battery Type 

One 3V CR2032 lithium battery 

Memory 

128 KB (84,650 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 Temp/RH 3.5% 
Data Logger 

UX100-003 

Included Items: 

 

Command™ strip 

 

Double-sided tape 

 

Hook & loop strap 

Required Items: 

 

HOBOware 3.4 or later 

 

USB cable (included with 
software) 

 

Summary of Contents for HOBO UX100-003

Page 1: ...ion 0 07 at 25 C 77 F and 30 RH Response Time 43 seconds to 90 in airflow of 1 m s 2 2 mph Drift 1 per year typical Logger Logger Operating Range Logging 20 to 70 C 4 to 158 F 0 to 95 RH non condensin...

Page 2: ...to connect the logger to the computer or the HOBO U Shuttle via USB cable see Setting up the Logger and Reading Out the Logger LCD Screen This logger is equipped with an LCD screen that displays detai...

Page 3: ...ng the launch configurations onto the logger from HOBOware Make sure the USB cable is connected to both the logger and the computer and try launching again The logger has been stopped with HOBOware or...

Page 4: ...button for 1 second if you select this option 10 Click the Start button to launch the logger Disconnect the logger from the computer and deploy it using the mounting materials see Mounting the Logger...

Page 5: ...burst logging You also cannot select the Stop Logging option Never wrapping if burst logging is configured 2 In the Burst Logging window select a sensor In the example at right the temperature sensor...

Page 6: ...you want to calculate during logging Note that Average is automatically enabled when selecting Standard Deviation Important Statistics apply to all enabled sensors every selected statistic will be cal...

Page 7: ...that the pins are in the two holes on the board shown here enlarged and without the logger case for illustrative purposes 4 Snap the louvered door back into place in the logger 5 Check logger status i...

Page 8: ...e lithium battery The battery may explode if the logger is exposed to extreme heat or conditions that could damage or destroy the battery case Do not dispose of the logger or battery in fire Do not ex...

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