HOBO MX Temp/RH Data Logger (MX1101) Manual
1-800-LOGGERS 5
www.onsetcomp.com
•
On Date/Time.
Select this if you want the logger to
stop logging on a specific date and time. Select the
date and time.
•
After.
Select this if you want to control how long the
logger should continue logging once it starts. Choose
the amount of time you want the logger to log data.
For example, select 30 days if you want the logger to
log data for 30 days after logging begins.
d.
Tap Save.
8.
Tap Logging Mode. Select either fixed or burst logging. With
fixed logging, the logger records data for all enabled sensors
and/or selected statistics at the logging interval selected
(see
Statistics Logging
for details on choosing statistics
options). In burst mode, logging occurs at a different
interval when a specified condition is met. See
Burst
Logging
for more information. Tap Save.
9.
Enable or disable Show LCD, which controls whether the
LCD on the logger will remain illuminated while the logger is
logging. If you disable Show LCD, the LCD on the logger will
not show the current reading, 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 on the logger for 1 second. In addition,
you can always view the status of any in-range logger on
your mobile device regardless of the logger’s LCD setting
(may require a logger password as applicable).
10.
Select the sensor measurement types that will be logged.
By default, both the temperature and RH sensors are
enabled. Both sensors are required to calculate dew point,
which is an additional data series available for plotting after
reading out the logger. You can also set up alarms to trip
when a sensor reading rises above or falls below a specified
value. See
Setting up Alarms
for details on enabling sensor
alarms and selecting the associated audible and visual
alarm settings.
11.
Select whether to upload data to HOBOlink® via the
gateway or the app (optional and requires an active
HOBOlink account).
12.
Tap
to save the configuration settings.
Logging will begin based on the settings you selected. Press the
start button on the logger if you set it up to start logging with a
button push. Deploy the logger 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. This can
alert you to problems so you can take corrective action. To set
an alarm:
1.
Tap Devices. Tap the logger in the app to connect to it and
tap .
2.
Tap a sensor (tap the Enable Logging toggle if necessary).
3.
Select High if you want an alarm to trip when the sensor
reading rises above the high alarm value. Drag the slider or
type a value to set the high alarm value.
4.
Select Low if you want an alarm to trip when the sensor
reading falls below the low alarm value. Drag the slider or
type a value to set the low alarm value.
5.
For the Duration, select how much time should elapse
before the alarm trips and select one of the following:
•
Cumulative. The alarm will trip once the sensor reading is
out of the acceptable range for the selected duration any
time during logging. For example, if the high alarm is set
to 85°F and the duration is set to 30 minutes, then the
alarm will trip once the sensor readings have been above
85°F for a total of 30 minutes since the logger was
configured.
•
Consecutive. The alarm will trip once the sensor reading
is out of the acceptable range continuously for the
selected duration. For example, the high alarm is set to
85°F and the duration is set to 30 minutes, then the
alarm will only trip if all sensor readings are 85°F or
above for a continuous 30-minute period.
6.
Tap Save and repeat steps 2–6 for the other sensor if
desired.
7.
In the configuration settings, enable Audible Alarm if you
want a beep to sound on the logger every 30 seconds when
the sensor alarm trips. The beeping will continue until the
alarm is cleared from the app, either button on the top of
the logger is pressed, or 7 days have passed. Battery life will
be slightly reduced when this setting is enabled. It is
recommended that you only enable this feature if you have
regular access to the logger so that you can easily turn off
the beeping.
8.
For Maintain Visual Alarms Until, select one of the following
options to determine how long the alarm icon will remain
illuminated on the logger LCD screen after an alarm trips:
•
Logger Reconfigured.
The alarm icon will remain visible
on the LCD until the next time the logger is reconfigured.
•
Sensor in Limits.
The alarm icon will remain visible on the
LCD until the sensor reading returns to the normal range
between any configured high and low alarm limits.
•
Alarm Button Pressed.
The alarm icon will remain visible
until you press the Alarm/Stats button on the logger.
9.
Tap .
Notes:
•
The alarm icon will be illuminated on the logger LCD
when the alarm trips. You can also press the Alarms/Stats
button on the logger to view the farthest out-of-range
value during the deployment. Alarm limits are checked
when the logger’s LCD screen refreshes every 15
seconds.
•
The actual values for the high and low alarm limits are set
to the closest value supported by the logger. In addition,
alarms can trip or clear when the sensor reading is within
the resolution specifications. This means the value that
triggers the alarm may differ slightly than the value
entered.
•
When you read out the logger, alarm events can be
displayed on the plot or in the data file. See
Logger
Events
.
•
Once cleared, an audible alarm will start beeping again if
the sensor values go out of the normal range. Even if an
