Min-Max-Avg Mode (Primary Display); Relative (Rel) Mode (Primary Display); Real Time Clock And Elapsed Timer - Extech Instruments 421502 User Manual

MIN-MAX-AVG mode (Primary Display)

1. Press the "MIN-MAX" button to access the mode and to start recording the
minimum, maximum, and average temperature readings
2. Use the "MIN-MAX" button to step through MIN, MAX, and AVG modes (the display
icons MIN, MAX, and AVG will change with each button press)
3. When a new MIN or MAX is detected, the previous MIN or MAX is replaced. An
audible beep alerts the user when a new MIN or MAX is recorded
4.
Use the "HOLD" button to pause/resume recording
5.
Long press the "MIN-MAX" button to exit and to reset the MIN-MAX-AVG memory
6.
When recording is paused, the stored values are held in memory until MIN-MAX-
AVG mode is canceled or resumed
7.
The Auto Power OFF utility is disabled, and the meter cannot be manually powered
OFF, in the MIN-MAX-AVG mode. Long press the "MIN-MAX" button to exit and
return to normal operation.

Relative (REL) Mode (Primary Display)

Relative mode allows the user to store a reference temperature for comparison with
subsequent measurements. The reference temperature can be automatically or manually
set (for manual entry, see the SET mode section). For automatic entry, the displayed
temperature is used as the reference value. Perform the steps below:
1. Press the "REL" button (the REL icon appears)
2. The currently displayed temperature becomes the reference value and
subsequent measurements represent the actual temperature minus the
reference temperature
3. Press the "REL" button to exit (the REL icon will switch OFF)

Real Time Clock and Elapsed Timer

The time display (bottom right) shows the real time clock. Refer to the SET mode section
to set the real time clock. The clock can also be used as an elapsed timer by resetting the
clock to zero. The clock allows you to see when MIN-MAX updates occur. Each time a new
MIN or MAX value is updated, the associated time is stored.
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