OM-70 Family of Data Loggers
18
Logger Display and Buttons
The logger display shows the current reading, the current time, the battery level, and the logging state of the device.
The OM-73 alternates the display between temperature and humidity every two seconds. The previously recorded
samples, stored in logger memory, can also be displayed by using the
Back
and
Forward
buttons.
Note: When scrolling through the recorded data, the OM-73 will not alternate the reading between temperature
and humidity. To switch the history display between temperature and humidity, use the Units button.
Note: When no thermocouple is connected to the OM-74, the display will show
to indicate that the
thermocouple connection is OPEN.
The current time in hours and minutes, and the current date, is shown in the lower portion of the display. The time
display is blank when the logger's internal real time clock is not running. This happens when the logger comes out
of
. When the current time is shown, the hours and minute separator,
:
, will blink once a second.
You can browse through the samples logged in the device memory using the
Back
and
Forward
buttons. When
browsing past samples, the time and date display show when the sample was taken. The temperature and/or
humidity display shows the recorded value at that time. The hours and minutes separator,
:
, will not blink in this
mode.
The logger will automatically exit the browse mode when the browsing goes passed the last sample recorded.
Note: To exit the browse mode quickly, press and hold the Start button for about 3 seconds. The hours and minutes
separator,
:
, will start blinking after exiting the browse mode.
The display also shows if the logger is logging, or waiting to log, as follows:
•
Logging
: The
icon is displayed continuously.
•
Logging will start when the Start button is held
: The
icon flashes.
•
Logging will start at a specific time
: The
icon and the time display flashes. The time display
indicates when the logging will start.
The
icon is On when the recorded temperature and/or humidity has passed the user selected alarm
thresholds anytime during logging. This is a "sticky" icon in that it does not go away when the reading returns to
normal. The
icon remains On even after logging is finished.
When the OM-74 logger is not displaying past recorded samples, the
Start
button can be used to check the
thermocouple type expected by the logger. See the section
Checking the Thermocouple Type Connected to the
Setting the OM-74 Thermocouple Type
The OM-74 connected thermocouple type is set by using the PC software. The thermocouple type can only be
changed when the logging is
Содержание OM-70 Series
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