Extech Instruments Oyster Series User Manual page 5

MAX/MIN Display
1. The meter memorizes the highest (MAX) and lowest (MIN) readings when prompted.
2. Press and hold the MAX/MIN button until both the MAX and MIN icons appear on the LCD. The
meter will now begin keeping track of the MIN and MAX readings.
3. To view MAX/MIN values, press the MAX/MIN button again; the meter automatically displays the
highest and lowest readings in succession and then returns to the MAX/MIN recording mode.
4. To exit the MAX/MIN mode, press and hold the MAX/MIN button until the MAX and MIN icons
disappear.
5. To clear the MAX/MIN memory, cycle the meter power.
External Temperature Offset Adjustment
The Offset Adjustment is used to fine tune the temperature reading of the external temperature
probe. This procedure is for the external probe only when ATC is active.
1. Place the temperature probe into a known temperature and note any temperature reading error.
2. Simultaneously Press and Release the ▲and ▼buttons, 0.0 will appear on the LCD
temperature reading
3. .Press the ▲ or ▼ button to set the display equal to the error value determined in step 1.
4. Press the STORE button to save the offset value into memory,
5. Test the temperature probe in the know temperature source to verify the correction was proper
and the adjustment made in the correct direction.
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