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HOBO External Temp/RH Data Logger (UX100-023) Manual 

1-800-LOGGERS 4 

www.onsetcomp.com

 

7.

 

Choose when to start logging: 

 

Now.

 Logging begins immediately. 

 

At Interval. 

Logging will begin at the next even interval as 

determined by the selected logging interval. 

 

On Date/Time.

 Logging will begin at a date and time you 

specify. 

 

Push Button.

 Logging will begin once you press the 

Start/Stop logging button for 3 seconds. 

8.

 

Choose when to stop logging: 

 

When Memory Fills.

 Logging will end once the logger 

memory is full. 

 

Never (Wrap When Full).

 The logger will continue 

recording data indefinitely, with newest data overwriting 
the oldest. This option is not available if Burst is selected 
for the Logging Mode. 

 

Push Button.

 Logging will end once you press the 

Start/Stop logging button for 3 seconds. Note that if you 
also choose Push Button to start logging, then you will 
not be able to stop logging until 30 seconds after logging 
begins. 

If you select the Push Button setting, then you also have 
the option to select “Allow button restart.” This allows 
you to stop and then restart logging during the 
deployment by pushing the Start/Stop button on the 
logger for 3 seconds. 

Important:

 When “Allow button restart” is selected and you 

use the Start/Stop button to stop and restart logging, 
logging will restart on the next even logging interval, not at 
the time the button was pushed. For example, a logger 
started logging at 7:00 AM with a logging interval set to 1 
hour. If you press the Start/Stop button to stop the logger 
at 8:45 AM and then press the button again at 10:15 AM, 
logging will not begin immediately at 10:15. Instead, logging 
will begin again at 11:00 AM, which is the next even interval 
time based on your 1-hour logging interval. Therefore, 
depending on the logging interval, the gap between the 
time you press the button to resume logging and the time 
actual logging begins could be significant. The faster the 
logging interval, the less time will elapse before logging 
resumes. 

 

Specific Stop Date.

 Logging will end at a date and time 

you specify. Note that if you also configure the logger for 
a Push Button stop and to “Allow button restart,” then 
the logger will stop logging at the date you select 
regardless of how many times you stop and restart the 
logger with the Start/Stop button. 

9.

 

Choose whether to keep the LCD on or off. 

By default, the

 

LCD will always remain on while logging. If you select the 
“Turn LCD off” checkbox, the LCD will not show the current 
readings, status, or other information while the logger is 
logging. You will, however, be able to temporarily turn the 
LCD screen on by pressing the Start/Stop 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

). After logging begins, 

you can read out the logger at any time (see 

Reading Out 

the Logger

 for details).

 

Setting up Alarms 

You can set an alarm to trip on the logger when a sensor 
reading rises above or falls below a specified value. To set an 
alarm: 

1.

 

Click the Alarms button from the Launch Logger window. 
If the Alarms button is disabled, make sure the Logging 
Mode is not set to Burst. (Alarms can only be configured 
if the logger is in Normal or Statistics mode.) 

2.

 

Select a sensor. In this example, the temperature sensor 
was selected. 

 

3.

 

Select the High Alarm checkbox if you want an alarm to 
trip when the sensor reading rises above the high alarm 
value. Type the reading next to the High Alarm checkbox 
or drag the red upper slider in the Configure Alarms 
window. 

4.

 

Select the Low Alarm checkbox if you want an alarm to 
trip when the sensor reading falls below the low alarm 
value. Type the reading next to the Low Alarm checkbox 
or drag the blue lower slider. 

5.

 

Set the duration before an alarm is tripped. 

6.

 

Select either Cumulative or Consecutive. If you select 
Cumulative, then the alarm will trip when the time the 
sensor is out of range over the course of the deployment 
is equal to the selected duration. If you select 
Consecutive, then the alarm will trip when the time the 
sensor is continuously out of range is equal to the 
selected duration. For example, the high alarm for 
temperature is set to 85°F and the duration is set to 30 
minutes. If Cumulative is selected, then an alarm will trip 
once a sensor reading has been at or above 85°F for a 
total of 30 minutes since the logger was configured; 
specifically, this could be 15 minutes above 85°F in the 
morning and then 15 minutes above 85°F again in the 
afternoon. If Consecutive is selected, then an alarm will 
trip only if all sensor readings are 85°F or above for a 
continuous 30-minute period. 

7.

 

Repeat steps 2 through 6 for the other sensor if desired. 

8.

 

Choose how long the logger should maintain a sensor 
alarm once it has tripped. Select “Host has relaunched 
logger” if you want the alarm to remain visible on the 
LCD until the next time you relaunch the logger. Select 

Summary of Contents for HOBO UX100-023

Page 1: ...e 90 5 typical Resolution 0 05 Response Time 5 minutes 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...

Page 2: ...d on the LCD screen followed by definitions of each symbol in the table below LCD Symbol Description The logger is waiting to be launched Press and hold the Start Stop button for 3 seconds to launch t...

Page 3: ...t Stop button for 1 second The LCD will then remain on for 10 minutes The LCD screen refreshes every 15 seconds regardless of the logging interval selected in HOBOware If you choose a logging interval...

Page 4: ...ogging If you select the Turn LCD off checkbox the LCD will not show the current readings status or other information while the logger is logging You will however be able to temporarily turn the LCD s...

Page 5: ...le then the logger would switch to burst logging mode again and record data every 10 seconds Once the temperature rises back to 32 F the logger will then return to normal mode logging every 5 minutes...

Page 6: ...ght maximum minimum average and standard deviation series four for temperature and four for RH with values calculated and logged every 5 minutes based on the 30 second sampling To set up statistics 1...

Page 7: ...der an RH Sensor Replacement Kit HUM RHPCB 2 and follow these instructions 1 Remove the tape fastening the sensor cap to the receptacle Discard the tape 2 Grasp the cap and pull firmly to remove it Di...

Page 8: ...ly installing the battery WARNING Do not cut open incinerate heat above 85 C 185 F or recharge the lithium battery The battery may explode if the logger is exposed to extreme heat or conditions that c...

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