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The true average of all the reading taken over at least 22 hours preiod can
be displayed. If 22 hours is exceeded, new averages are no longer
calculated. The last calcalated value is retained as the average reading,
but the actual minimum and maximum reading will continue to be
captured.
In the this mode, press HOLD key to stop the recording of readings, all
values are frozen, press again to restart recording.
To prevent accidental loss of MIN, MAX and AVG data, in this mode can
only be cancelled by pressing and hold down the MIN MAX key for 2
seconds to exit and erased recorded readings.
REL Relative mode
Pressing REL key to enter the Relative mode, zero the display, and store
the displayed Reading as a reference value and annunciator REL is
displayed. Present temperature reading displayed on second display.
Press REL key again to exit the relative mode.
The relative value can also be entered by the user. (See "SET mode" later
in this manual.)
When the desired Relative value has been entered, press REL key to
enter the Relative mode, press SET key use set Relative value as a
reference value. Press REL key again to exit the relative mode.
In the Relative mode, the value (can not >±3000.0 counts) shown on the
LCD is always the difference between the stored reference and the
present reading.